EMS Research Developments Quiz
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Questions and Answers

What was the primary method for developing EMS practices in the early years?

  • Extensive clinical trials and randomized controlled studies
  • Adapting practices from other fields, such as hospital medicine and the military (correct)
  • Scientific research and objective evidence
  • Intuition and experience of emergency medical professionals
  • Which of the following EMS practices, once believed to be effective, have been found to be less effective than previously thought through research?

  • Automated External Defibrillator (AED) use
  • Endotracheal intubation (correct)
  • Cardiopulmonary resuscitation (CPR)
  • Nasal cannula oxygen administration
  • What is a key characteristic that distinguishes a profession from a trade?

  • A profession is often regulated by a governing body, while a trade is not.
  • A profession is associated with higher status and prestige compared to a trade.
  • A profession typically requires a higher level of education, while a trade requires more practical training.
  • A profession emphasizes continuous learning and adaptation based on research, while a trade often relies on established practices. (correct)
  • What is the primary rationale for emphasizing outcomes-based research in EMS?

    <p>To demonstrate the effectiveness and cost-effectiveness of EMS care and services (B)</p> Signup and view all the answers

    The National EMS Research Agenda, published in 2001, made several recommendations to advance EMS research. Which of these recommendations was NOT included in the document?

    <p>Focus on only highly complex and advanced medical interventions in research studies (A)</p> Signup and view all the answers

    What is the central reason for the growing emphasis on research in EMS?

    <p>To ensure that EMS practices are evidence-based and effective (A)</p> Signup and view all the answers

    Which of the following is NOT a direct benefit of incorporating research findings into EMS practices?

    <p>Increased job security and satisfaction for EMS providers (A)</p> Signup and view all the answers

    Why is it essential for EMS to prove that its services benefit patients and thecommunity?

    <p>To gain public support and ensure continued funding (B)</p> Signup and view all the answers

    What type of research is typically used in medical research?

    <p>Quantitative (B)</p> Signup and view all the answers

    Which of the following is NOT a common belief about the full moon's effect on human behavior?

    <p>Increased incidents of dog bites (C)</p> Signup and view all the answers

    What is the independent variable in a typical medical research study?

    <p>The variable that is being changed (B)</p> Signup and view all the answers

    What is the key characteristic that distinguishes quantitative research from qualitative research?

    <p>The use of numbers to describe findings (A)</p> Signup and view all the answers

    What is the primary goal of publishing research findings in medical journals?

    <p>To open up further discussion and analysis (B)</p> Signup and view all the answers

    What is an iterative process in scientific research?

    <p>Revising steps based on new information (D)</p> Signup and view all the answers

    Which of the following is NOT a factor that has been found to be associated with an increase in psychiatric emergencies?

    <p>Full moon phase (C)</p> Signup and view all the answers

    Why is it important to report research findings even if the hypothesis is found to be false?

    <p>To contribute to the overall body of knowledge (A)</p> Signup and view all the answers

    Which study type is least likely to be used to determine the effectiveness of a new piece of medical equipment in a controlled environment?

    <p>Case report (C)</p> Signup and view all the answers

    What is the most likely reason for the perceived increase in motorcycle collisions during a full moon?

    <p>Driver distraction due to the bright moon (C)</p> Signup and view all the answers

    In a study investigating the relationship between full moons and emergency department visits, what would be considered the dependent variable?

    <p>The number of emergency department visits (B)</p> Signup and view all the answers

    In a double-blind study, who is kept unaware of the treatment group assignments?

    <p>Both the subjects and experimenters (B)</p> Signup and view all the answers

    Which of the following statements accurately reflects the relationship between the moon and childbirth?

    <p>There is no evidence supporting a link between lunar phases and childbirth (A)</p> Signup and view all the answers

    A study investigating the long-term effects of a particular medication on a group of patients compared to a control group would best be described as a:

    <p>Cohort study (A)</p> Signup and view all the answers

    Which study type typically involves a smaller group of patients compared to a randomized controlled trial?

    <p>Case series (B)</p> Signup and view all the answers

    What is the primary purpose of a medical study that aims to investigate the relationship between heart attacks and full moons?

    <p>To debunk the myth of full moons causing heart attacks (D)</p> Signup and view all the answers

    Which is not a characteristic of a randomized controlled trial (RCT)?

    <p>Researchers can influence group assignments (A)</p> Signup and view all the answers

    What is the most likely explanation for the perceived increase in EMS calls during the full moon?

    <p>It is a result of confirmation bias and anecdotal evidence (C)</p> Signup and view all the answers

    What is the primary reason why a meta-analysis is considered a highly valid study type?

    <p>It uses a large sample size (C)</p> Signup and view all the answers

    What is the main takeaway from the research on the impact of full moons on emergencies?

    <p>There is no evidence to support a link between full moons and emergencies (C)</p> Signup and view all the answers

    What is a key difference between a cohort study and a cross-sectional study?

    <p>Cross-sectional studies analyze data from a single point in time (C)</p> Signup and view all the answers

    How does the concept of confirmation bias apply to the belief that full moons influence human behavior?

    <p>All of the above (D)</p> Signup and view all the answers

    According to the content, why is it important to define a specific time interval for the study of full moon effects on emergencies?

    <p>To establish a clear timeframe for the study's scope (D)</p> Signup and view all the answers

    Which study type is primarily used when there is a lack of existing scientific research in a particular area?

    <p>Expert opinion (B)</p> Signup and view all the answers

    What is a potential disadvantage of relying heavily on expert opinions to guide practices?

    <p>It may lead to the adoption of ineffective or even harmful practices (C)</p> Signup and view all the answers

    Why are nonrandomized controlled trials considered less valid than randomized controlled trials?

    <p>They can be affected by preexisting differences between groups (B)</p> Signup and view all the answers

    What type of study is most useful for examining the prevalence of a specific condition at a particular point in time?

    <p>Cross-sectional study (A)</p> Signup and view all the answers

    Which of the following would be an example of a cohort study?

    <p>Following a group of patients with diabetes over time to track their blood sugar levels (D)</p> Signup and view all the answers

    A researcher is interested in studying the impact of a newly developed CPR training program on the survival rates of cardiac arrest victims. What type of study would be the most appropriate?

    <p>Randomized controlled trial (A)</p> Signup and view all the answers

    Which of the following is NOT a common method used to achieve blinding in a study?

    <p>Sharing treatment group data between researchers (C)</p> Signup and view all the answers

    A meta-analysis is used to:

    <p>Synthesize findings from multiple individual studies (A)</p> Signup and view all the answers

    What is the purpose of calculating the variance in a set of data?

    <p>To measure the spread or dispersion of the data around the mean. (B)</p> Signup and view all the answers

    How is the standard deviation calculated?

    <p>By summing the squared differences between each value and the mean, dividing by the number of values, and then taking the square root. (D)</p> Signup and view all the answers

    If two groups have the same mean but different standard deviations, what can we conclude about the data?

    <p>The group with the higher standard deviation has more spread-out data. (D)</p> Signup and view all the answers

    What is the mode of a data set?

    <p>The value that appears most frequently in the data. (D)</p> Signup and view all the answers

    What is the primary difference between descriptive and inferential statistics?

    <p>Descriptive statistics describe the sample, while inferential statistics draw inferences about the population. (D)</p> Signup and view all the answers

    What is sampling error?

    <p>The difference between the sample mean and the population mean, due to sampling. (B)</p> Signup and view all the answers

    What is a confidence interval?

    <p>A range of values that is likely to contain the true population mean. (D)</p> Signup and view all the answers

    If a confidence interval for a proportion includes zero, what can we conclude?

    <p>The results are not statistically significant. (D)</p> Signup and view all the answers

    In the context of statistical tests, what is the difference between qualitative and quantitative tests?

    <p>Qualitative tests are used for categorical data, while quantitative tests are used for numerical data. (A)</p> Signup and view all the answers

    What is the difference between variance and standard deviation?

    <p>Variance is calculated by summing the squared differences from the mean, while standard deviation is calculated by taking the square root of the variance. (B)</p> Signup and view all the answers

    Why is it generally recommended to divide by one less than the number of values when calculating the variance for a sample?

    <p>To reduce the potential for bias in the estimate of the population variance. (B)</p> Signup and view all the answers

    What is the relationship between the standard deviation and the shape of a data distribution?

    <p>A larger standard deviation indicates a wider distribution. (D)</p> Signup and view all the answers

    Imagine two EMT classes take an exam, with the same mean score but different standard deviations. Which statement is correct?

    <p>The class with the smaller standard deviation likely has more consistent achievement. (C)</p> Signup and view all the answers

    In a study of survival rates from cardiac arrest, researchers calculate a confidence interval for the proportion of patients who survive. What does a confidence interval represent in this context?

    <p>A range of values that is likely to contain the true survival rate for the population of patients with cardiac arrest. (A)</p> Signup and view all the answers

    What is the main purpose of inferential statistics?

    <p>To draw inferences about the population from which the sample was drawn. (C)</p> Signup and view all the answers

    How does the size of a sample affect the reliability of the conclusions drawn from inferential statistics?

    <p>Larger samples generally lead to more reliable conclusions. (A)</p> Signup and view all the answers

    What is the main idea presented in the passage?

    <p>EMS practices should be constantly evaluated and adapted based on scientific evidence. (A)</p> Signup and view all the answers

    Which of the following BEST describes the concept of “Never be the first to prescribe a new drug, or the last to prescribe an old one” as it relates to EMS?

    <p>EMS providers should be cautious about adopting new treatments but not hesitant to abandon old ones when their effectiveness is questioned. (A)</p> Signup and view all the answers

    What is the main purpose of using descriptive statistics in EMS research?

    <p>To summarize the characteristics of a sample. (C)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of normally distributed data?

    <p>The distribution is skewed, with more data points at one end of the distribution than the other. (A)</p> Signup and view all the answers

    Why is the median a better measure of central tendency than the mean when data are not normally distributed?

    <p>The median is less affected by extreme values. (A)</p> Signup and view all the answers

    What is the primary purpose of calculating the variance in a data set?

    <p>To measure the spread or dispersion of the data. (A)</p> Signup and view all the answers

    What is the relationship between variance and standard deviation?

    <p>Standard deviation is the square root of the variance. (C)</p> Signup and view all the answers

    How does the standard deviation help in interpreting data from two different EMT classes with the same mean score on an exam?

    <p>It helps us to understand the variability of scores within each class. (C)</p> Signup and view all the answers

    What is the most appropriate measure for a single value that describes the center of a group of data?

    <p>Mean (A), Median (D)</p> Signup and view all the answers

    In the example given in the text about EMT P classes, what is the most important takeaway regarding the classes' performance?

    <p>Class 1 had a higher variance and standard deviation, indicating a wider range of scores. (B), Class 2 had a lower variance and standard deviation, suggesting more consistent performance. (C)</p> Signup and view all the answers

    What is the potential drawback of using the mean as a measure of central tendency for emergency call volume?

    <p>The mean is highly sensitive to outliers, such as exceptionally busy EMS services. (A)</p> Signup and view all the answers

    Why is it important for EMS clinicians to stay updated on evolving science and research?

    <p>To improve patient care outcomes and reduce the risk of complications. (C)</p> Signup and view all the answers

    Which of these BEST demonstrates the concept of inferential statistics in EMS research?

    <p>Using data from a sample of patients to draw conclusions about the effectiveness of a new medication. (B)</p> Signup and view all the answers

    Why is it important to use statistics when evaluating EMS practices?

    <p>All of the above (D)</p> Signup and view all the answers

    What is the main difference between descriptive statistics and inferential statistics?

    <p>Descriptive statistics are used to describe data, while inferential statistics are used to draw conclusions about populations based on samples. (A)</p> Signup and view all the answers

    What is the primary focus of qualitative statistics?

    <p>Categorical data that are nonnumeric in nature. (B)</p> Signup and view all the answers

    Which statistical test is primarily used to compare means between two groups?

    <p>T test (A)</p> Signup and view all the answers

    What does an odds ratio greater than 1 indicate?

    <p>A stronger likelihood of having the risk factor in the presence of the condition. (C)</p> Signup and view all the answers

    What is the function of confidence intervals in statistics?

    <p>To indicate the reliability of statistical results. (B)</p> Signup and view all the answers

    Which type of data does NOT allow for the calculation of the mean?

    <p>Nominal data (B)</p> Signup and view all the answers

    What characterizes normally distributed data?

    <p>The mean, median, and mode are all equal. (A)</p> Signup and view all the answers

    Which of the following is a key function of descriptive statistics?

    <p>To summarize the main characteristics of a dataset. (D)</p> Signup and view all the answers

    What does a confidence interval that includes the value 1 imply about an odds ratio?

    <p>The association between risk factor and condition is insignificant. (B)</p> Signup and view all the answers

    Which type of data is often referred to as continuous data?

    <p>Quantitative data (B)</p> Signup and view all the answers

    Which of the following is a misconception about statistics?

    <p>All statistics are unbiased and objective. (A)</p> Signup and view all the answers

    In case-control studies, what does the odds ratio measure?

    <p>The strength of association between a risk factor and an outcome. (D)</p> Signup and view all the answers

    What is the appropriate statistical test for comparing more than two groups?

    <p>ANOVA (D)</p> Signup and view all the answers

    Which of the following definitions accurately describes inferential statistics?

    <p>Statistics that make predictions about a population based on a sample. (D)</p> Signup and view all the answers

    What does an odds ratio of 1 signify in a study?

    <p>There is no association between the variables. (A)</p> Signup and view all the answers

    What was the purpose of calculating the 95 percent confidence interval in the study?

    <p>To assess whether there is a statistically significant relationship. (B)</p> Signup and view all the answers

    Why would an interval ranging from 1.2 to 2.0 indicate significance?

    <p>It does not include 1, suggesting a strong relationship. (A)</p> Signup and view all the answers

    What is the primary function of the abstract in a research paper?

    <p>To summarize the study's need, methods, and results. (C)</p> Signup and view all the answers

    What is typically found in the methods section of a research paper?

    <p>A detailed description of how the study was conducted. (C)</p> Signup and view all the answers

    What do reviewers evaluate when reviewing a research paper?

    <p>The paper’s adherence to research standards. (C)</p> Signup and view all the answers

    How does the discussion section of a research paper contribute to the overall study?

    <p>By interpreting findings and discussing their significance. (A)</p> Signup and view all the answers

    What role does the editor play after a research paper is submitted?

    <p>To select reviewers and make publication decisions. (A)</p> Signup and view all the answers

    Which statement best reflects the purpose of statistical analysis?

    <p>To remove bias and analyze data objectively. (A)</p> Signup and view all the answers

    What is a common misconception regarding statistics?

    <p>Statistics can be manipulated to show various outcomes. (D)</p> Signup and view all the answers

    What does a higher standard deviation indicate about a data set?

    <p>The data points are more spread out from the mean. (B)</p> Signup and view all the answers

    What does the term 'statistical power' refer to in a study?

    <p>The capability to detect a difference when one exists. (D)</p> Signup and view all the answers

    What should a researcher include to allow repetition of their study?

    <p>Detailed methodology and sample size. (C)</p> Signup and view all the answers

    What can be inferred about the relationship between passing the EMS exam and holding a college degree based on the odds ratio reported?

    <p>There might be a slight association, but it's statistically insignificant. (A)</p> Signup and view all the answers

    What distinguishes descriptive statistics from inferential statistics?

    <p>Descriptive statistics summarize sample data without drawing conclusions about the population. (C)</p> Signup and view all the answers

    Which part of a research paper outlines how conclusions were drawn from the data?

    <p>Discussion (D)</p> Signup and view all the answers

    In the context of sampling error, what is it?

    <p>The difference between sample value and population value due to sample selection. (B)</p> Signup and view all the answers

    What type of data do qualitative statistics primarily deal with?

    <p>Non-numeric categories or ranked data. (A)</p> Signup and view all the answers

    Which of the following is an example of quantitative data?

    <p>The temperature measured in degrees. (D)</p> Signup and view all the answers

    What does the odds ratio reflect in case-control studies?

    <p>The likelihood of a risk factor occurring if the condition is present versus not present. (A)</p> Signup and view all the answers

    Why must researchers be cautious about confidence intervals?

    <p>Because a CI that includes zero indicates no significant difference. (B)</p> Signup and view all the answers

    What is the main purpose of using inferential statistics?

    <p>To draw conclusions about a population based on sample data. (C)</p> Signup and view all the answers

    Which statistical test is commonly used for comparing means among groups?

    <p>T-test. (A)</p> Signup and view all the answers

    When might it be impossible to find the mean of a data set?

    <p>When the data consists of categorical or nominal values. (C)</p> Signup and view all the answers

    What is the role of variability in estimating proportions?

    <p>To indicate how much the proportion could differ in different samples. (C)</p> Signup and view all the answers

    How is the confidence interval of 20 percent with a variability of 6 percent expressed?

    <p>20% ± 6% (C)</p> Signup and view all the answers

    What role does an abstract serve at national peer meetings?

    <p>It is used to gather feedback that may influence the full paper. (D)</p> Signup and view all the answers

    Which statement about the peer review process is accurate?

    <p>Recent studies have highlighted deficiencies in many published papers. (A)</p> Signup and view all the answers

    What recent change has been made by the journal Annals of Emergency Medicine regarding paper reviews?

    <p>Reviewers receive training on evaluating statistical usage. (C)</p> Signup and view all the answers

    What is one benefit of the Internet age concerning access to scientific literature?

    <p>Many articles can be quickly accessed online. (B)</p> Signup and view all the answers

    What platform provides a free and accessible database of medical and scientific literature?

    <p>PubMed (B)</p> Signup and view all the answers

    Which of the following is NOT a requirement for journals regarding research involving human subjects?

    <p>Publication of study results within one year. (D)</p> Signup and view all the answers

    What is a potential issue if the hypothesis in a study is not clearly defined?

    <p>Researchers may draw unjustified conclusions. (D)</p> Signup and view all the answers

    What does it mean if a study employed convenience sampling?

    <p>Participants were chosen based on availability. (B)</p> Signup and view all the answers

    Why is it important for researchers to account for confounding variables?

    <p>Ignoring them can lead to unreliable conclusions. (A)</p> Signup and view all the answers

    What issue arises if the sample size in a study is too small?

    <p>The study may lack sufficient statistical power. (A)</p> Signup and view all the answers

    What is a challenge faced when searching the PubMed database?

    <p>The complexity of the searches may necessitate librarian assistance. (B)</p> Signup and view all the answers

    What is implied if a journal publishes research papers of lower quality on purpose?

    <p>They aim to provoke debate on important issues. (A)</p> Signup and view all the answers

    In randomized controlled studies, why is randomization important?

    <p>It helps eliminate selection bias in assigning groups. (A)</p> Signup and view all the answers

    What must be described to prevent type II errors in a study?

    <p>The sample size necessary for adequate power. (C)</p> Signup and view all the answers

    Which of the following is considered an ethical requirement for conducting research involving human subjects?

    <p>Obtaining Institutional Review Board (IRB) approval. (B)</p> Signup and view all the answers

    What is the term used to describe the inappropriate use of statistical tests to find significant results repeatedly?

    <p>Data dredging (D)</p> Signup and view all the answers

    Why can a small P-value be impressive but not necessarily proof of the study hypothesis?

    <p>A small P-value only indicates the likelihood of observing the results if the hypothesis is true, not its certainty. (D)</p> Signup and view all the answers

    Which of the following is an example of association, NOT causation, as highlighted in the text?

    <p>Higher ice cream sales are associated with a greater number of drownings. (A)</p> Signup and view all the answers

    What is a key factor to consider when evaluating the validity of an EMS research study?

    <p>The quality of the EMS system in which the study took place. (B)</p> Signup and view all the answers

    What is a crucial step to take when a research paper contradicts established knowledge?

    <p>Attempt to replicate the experiment before making any significant changes. (A)</p> Signup and view all the answers

    Which of the following is NOT a question to consider when evaluating the quality of a study?

    <p>Were the authors paid by a pharmaceutical company to conduct the study? (B)</p> Signup and view all the answers

    Why is it important to ensure that the study groups are properly sized?

    <p>Improper group sizes can lead to biased results and impact the reliability of the study. (D)</p> Signup and view all the answers

    What is the significance of a study being peer-reviewed?

    <p>Peer review provides an objective review of the study by experts in the field. (A)</p> Signup and view all the answers

    What is a critical element in ensuring ethical research?

    <p>The approval of the study by an Institutional Review Board (IRB). (A)</p> Signup and view all the answers

    What is the purpose of inclusion and exclusion criteria in a study?

    <p>To standardize the study population and reduce variability in the data. (A)</p> Signup and view all the answers

    Which type of research focuses on understanding the 'why' behind phenomena, using non-numeric data and exploring natural settings?

    <p>Qualitative research (B)</p> Signup and view all the answers

    What was the main ethical violation in the Tuskegee Syphilis Study?

    <p>All of the above. (D)</p> Signup and view all the answers

    What is the primary reason researchers rely on confidence intervals when interpreting research results?

    <p>To estimate the range of values that the true population parameter could fall within (A)</p> Signup and view all the answers

    A research project aims to understand the impact of a new medication on patient recovery time. Which research design would be most appropriate for this study?

    <p>Experimental study (D)</p> Signup and view all the answers

    Which of the following is NOT a fundamental principle of the Helsinki Declaration?

    <p>Financial compensation for participation. (A)</p> Signup and view all the answers

    What does 'a 95 percent confidence interval' indicate?

    <p>We are 95 percent confident that the true population parameter lies within the calculated interval (C)</p> Signup and view all the answers

    What is the primary role of an Institutional Review Board (IRB)?

    <p>To protect the rights and welfare of human subjects in research. (A)</p> Signup and view all the answers

    If a confidence interval for a proportion includes zero, what does this imply about the results?

    <p>There is a real possibility that there is no actual difference between the study group outcome and the control group outcome (D)</p> Signup and view all the answers

    What is the primary difference between experimental and quasiexperimental studies?

    <p>Experimental studies involve random assignment of participants, while quasiexperimental studies do not. (D)</p> Signup and view all the answers

    A researcher investigates the relationship between caffeine consumption and alertness levels. They survey a group of participants about their caffeine intake and then measure their alertness using a standardized test. What type of research is this?

    <p>Nonexperimental research (D)</p> Signup and view all the answers

    What type of data are considered 'qualitative' in statistical analysis?

    <p>Data representing a ranking or order, like the severity of a disease stage (B), Data categorized into groups, such as gender (male, female) (C)</p> Signup and view all the answers

    Which document was released in 1979 as a direct response to the Tuskegee Syphilis Study?

    <p>The Belmont Report (D)</p> Signup and view all the answers

    Which of these research methods is often used to gather information about public opinion or market trends?

    <p>Survey research (C)</p> Signup and view all the answers

    What does an Odds Ratio (OR) of 1 indicate in a case-control study?

    <p>No association between the risk factor and the condition (A)</p> Signup and view all the answers

    Which of the following is NOT a legal consideration regarding medical research in the United States today?

    <p>Researchers can use any population group they choose for their studies. (A)</p> Signup and view all the answers

    What is the primary advantage of prospective studies over retrospective studies?

    <p>Prospective studies allow for more control over the data collection process. (C)</p> Signup and view all the answers

    In a case-control study, a confidence interval for an odds ratio that includes 1 signifies what?

    <p>No statistically significant association between the risk factor and the condition (D)</p> Signup and view all the answers

    What is the primary difference between quantitative and qualitative data?

    <p>Quantitative data is numerical and can be measured, while qualitative data is non-numerical and deals with categories or descriptions (A)</p> Signup and view all the answers

    A study examines the relationship between smoking and lung cancer by collecting data on past and current smokers' medical records. What type of study is this?

    <p>Retrospective study (C)</p> Signup and view all the answers

    What is the ‘mean’ in statistics?

    <p>The average value in a dataset. (A)</p> Signup and view all the answers

    What is the purpose of statistical tests?

    <p>To analyze the relationships between variables and draw conclusions from data (B)</p> Signup and view all the answers

    Which statistical measure is best suited for data that is not normally distributed?

    <p>Median (D)</p> Signup and view all the answers

    Why are observational studies often used when studying the effectiveness of medical treatments?

    <p>Observational studies are more ethical when withholding treatment might harm a patient. (B)</p> Signup and view all the answers

    Which of the following is NOT a common statistical test mentioned in the content?

    <p>Correlation test (A)</p> Signup and view all the answers

    What is a ‘bell curve’ in statistics?

    <p>A graphical representation of a data set that is normally distributed. (C)</p> Signup and view all the answers

    A researcher wants to investigate the impact of a new exercise program on blood pressure. They recruit participants and randomly assign them to either a control group (no exercise) or an experimental group (exercise program). This is an example of a(n):

    <p>Experimental study (A)</p> Signup and view all the answers

    What does ‘variance’ measure in statistics?

    <p>The spread or dispersion of a dataset. (B)</p> Signup and view all the answers

    What is the significance of having an odds ratio greater than 1 in a case-control study?

    <p>The risk factor is statistically significant, implying a potentially strong association with the condition (D)</p> Signup and view all the answers

    Which of these research methods typically involves a control group?

    <p>Experimental study (C)</p> Signup and view all the answers

    Which statistical measure would be most useful in describing the typical number of emergency calls received by EMS agencies in a state where there are a few very busy services and many less busy services?

    <p>Median (B)</p> Signup and view all the answers

    If the confidence interval for an odds ratio does not include 1, what conclusion can be drawn?

    <p>There is a statistically significant association between the risk factor and the condition (D)</p> Signup and view all the answers

    A research project seeks to understand the experiences of patients who have undergone a specific surgery. What research approach would be most suitable for this?

    <p>Qualitative research (D)</p> Signup and view all the answers

    What does the phrase 'There are three kinds of lies: lies, damned lies, and statistics' refer to?

    <p>The potential for misinterpreting or manipulating statistical data (B)</p> Signup and view all the answers

    A researcher studies the effectiveness of a new pain relief medication by tracking patients' pain levels over time. What is the independent variable in this study?

    <p>Medication (A)</p> Signup and view all the answers

    What is the key difference between the mean and the median?

    <p>The mean is sensitive to outliers, while the median is less sensitive to outliers. (A)</p> Signup and view all the answers

    What is the main goal of statistical methods in scientific research?

    <p>To draw inferences and make predictions. (D)</p> Signup and view all the answers

    A study collects data on the prevalence of diabetes in a specific population by reviewing medical records from the past five years. What type of study is this?

    <p>Retrospective study (D)</p> Signup and view all the answers

    Why is a proper statistical analysis important in research?

    <p>To eliminate bias and subjective interpretations (B)</p> Signup and view all the answers

    Which of the following is a key characteristic of a confidence interval?

    <p>It reflects the uncertainty associated with the sample estimate (D)</p> Signup and view all the answers

    What is the most important factor in determining the validity of a research study?

    <p>Adherence to the scientific method (C)</p> Signup and view all the answers

    What is the relationship between the confidence interval and the sample size?

    <p>A larger sample size generally leads to a narrower confidence interval (B)</p> Signup and view all the answers

    Which of the following best describes the goal of a meta-analysis?

    <p>To combine the results of multiple studies on a particular topic. (C)</p> Signup and view all the answers

    In the context of medical research, what is the purpose of informed consent?

    <p>To allow participants to make an informed decision about participating in research. (C)</p> Signup and view all the answers

    What is the difference between ethical guidelines and legal regulations in medical research?

    <p>Ethical guidelines are aspirational, while legal regulations are enforceable. (D)</p> Signup and view all the answers

    What is the primary purpose of analyzing data with statistical tests?

    <p>To identify patterns and relationships within the data (C)</p> Signup and view all the answers

    What is the primary objective of EMS Agenda 2050?

    <p>To develop evidence-based guidelines for prehospital emergency care. (A)</p> Signup and view all the answers

    What is the key advantage of the scientific method?

    <p>It provides a framework for studying phenomena without bias. (B)</p> Signup and view all the answers

    What is the first step in the scientific method?

    <p>Observing and asking questions. (C)</p> Signup and view all the answers

    What is the purpose of constructing a hypothesis in the scientific method?

    <p>To provide a tentative explanation for an observation. (D)</p> Signup and view all the answers

    What does a fair test in an experiment require?

    <p>Modifying only one variable at a time while keeping other conditions constant. (B)</p> Signup and view all the answers

    Why is it important to define the parameters of an experiment clearly?

    <p>To ensure the experiment is replicable by others. (B)</p> Signup and view all the answers

    What is the purpose of using PubMed?

    <p>To conduct background research and explore existing studies. (D)</p> Signup and view all the answers

    What does the term 'science' essentially mean?

    <p>The pursuit of knowledge through observation and experimentation. (D)</p> Signup and view all the answers

    What is the role of research in EMS?

    <p>To ensure the effectiveness of EMS interventions. (D)</p> Signup and view all the answers

    What is meant by the statement 'medicine is both an art and a science'?

    <p>Scientific principles guide medical practice, but clinical judgment and decision-making are also crucial. (C)</p> Signup and view all the answers

    What is the significance of incorporating standard scientific methodology into the evaluation of biomedical and technical advances in prehospital and out-of-hospital care?

    <p>To demonstrate the effectiveness and safety of the advances. (C)</p> Signup and view all the answers

    Why is it important to have access to patient outcome information for EMS research?

    <p>To evaluate and enhance the effectiveness of prehospital care. (B)</p> Signup and view all the answers

    What is the significance of research in ensuring that the best possible patient care is provided in the prehospital and out-of-hospital setting?

    <p>To evaluate the effectiveness of existing interventions and identify areas for improvement. (D)</p> Signup and view all the answers

    What is a key obstacle to EMS research?

    <p>Inadequate funding and resources. (B)</p> Signup and view all the answers

    What is the most important factor in ensuring high-quality patient care in the prehospital setting?

    <p>Evidence-based research and continuous quality improvement. (A)</p> Signup and view all the answers

    Why is it important to emphasize the overall health of the community when considering EMS research?

    <p>To improve the health outcomes of the community and reduce healthcare costs. (C)</p> Signup and view all the answers

    Which of the following is NOT a valid reason for the evolution of EMS research in the last two decades?

    <p>Increased funding for EMS research due to public concerns about its effectiveness (D)</p> Signup and view all the answers

    What is the primary purpose of 'bench research' as described in the text?

    <p>To study basic biological processes and mechanisms (A)</p> Signup and view all the answers

    What does the term 'external validity' refer to in the context of scientific research?

    <p>The extent to which the research findings can be generalized to other populations (A)</p> Signup and view all the answers

    What was the primary finding of the Ontario Prehospital Advanced Life Support (OPALS) study regarding cardiac arrest patients?

    <p>ALS procedures were found to be ineffective in improving survival rates when compared to basic life support (BLS) (A)</p> Signup and view all the answers

    What was a major finding of the OPALS study regarding major trauma patients?

    <p>ALS interventions increased mortality and morbidity in certain groups (B)</p> Signup and view all the answers

    Which of the following is NOT a major group of adult patients evaluated in the OPALS study?

    <p>Patients experiencing stroke (A)</p> Signup and view all the answers

    What is the primary reason for the concern over the rights of individuals participating in medical research?

    <p>Preventing potential harm or exploitation of research subjects (C)</p> Signup and view all the answers

    What historical event prompted the development of the Nuremberg Code of 1947?

    <p>The Nazi medical experiments during World War II (B)</p> Signup and view all the answers

    What was the main purpose of the Nuremberg Code of 1947?

    <p>To establish ethical guidelines for human research studies (D)</p> Signup and view all the answers

    What specific ethical principle is violated when research subjects are not informed of the risks and benefits of participating in a study?

    <p>Autonomy (C)</p> Signup and view all the answers

    What is the primary difference between bench research and animal research?

    <p>Bench research focuses on basic biological processes, while animal research tests the effectiveness of treatments (D)</p> Signup and view all the answers

    Which of the following is an example of a practice that was initially considered beneficial but was later found to be ineffective or harmful through EMS research?

    <p>The use of advanced life support (ALS) for major trauma patients (A)</p> Signup and view all the answers

    What is the significance of the 'chain of survival' concept in cardiac arrest treatment?

    <p>It highlights the importance of early defibrillation and CPR (D)</p> Signup and view all the answers

    What is a major limitation of animal research in understanding human health?

    <p>Inability to replicate human responses and reactions accurately (B)</p> Signup and view all the answers

    Which of the following statements about the role of EMS physicians in research is accurate?

    <p>EMS physicians are increasingly playing a more active role in driving and conducting EMS research (A)</p> Signup and view all the answers

    The OPALS study was the first of its kind to:

    <p>Quantify the importance of various links in the cardiac arrest chain of survival. (C)</p> Signup and view all the answers

    In what scenario is the median a more suitable measure of central tendency compared to the mean?

    <p>When there are a few extreme values that skew the data. (D)</p> Signup and view all the answers

    What does the standard deviation tell us about a set of data?

    <p>The average difference between each data point and the mean. (A)</p> Signup and view all the answers

    Which of these is NOT a measure of central tendency?

    <p>Standard Deviation (B)</p> Signup and view all the answers

    How is the variance calculated?

    <p>By squaring the difference between each data point and the mean and then averaging these squared differences. (D)</p> Signup and view all the answers

    In a frequency distribution graph, what does the mode represent?

    <p>The data point with the highest frequency of occurrence. (B)</p> Signup and view all the answers

    Why is the mean a less reliable measure of central tendency when data is not normally distributed?

    <p>The mean is too sensitive to extreme values, especially in skewed distributions. (B)</p> Signup and view all the answers

    If two groups of data have the same mean, but one group has a significantly higher standard deviation than the other, what can be concluded?

    <p>The group with the higher standard deviation is more spread out. (A)</p> Signup and view all the answers

    Which of these is NOT a measure of dispersion?

    <p>Median (B)</p> Signup and view all the answers

    What is the main purpose of calculating the standard deviation?

    <p>To measure the spread or dispersion of data around the mean. (B)</p> Signup and view all the answers

    In the context of EMS agencies, what is the potential issue with using the mean number of calls received to represent the typical workload?

    <p>The mean is influenced by a few very busy agencies, creating an inaccurate representation. (D)</p> Signup and view all the answers

    How does the standard deviation help us compare the performance of two EMT classes that have the same mean exam score?

    <p>The standard deviation indicates the spread of scores within each class, revealing their relative consistency. (D)</p> Signup and view all the answers

    Why is dividing by one less than the number of data points considered when calculating the variance for a sample?

    <p>It helps to correct for the bias introduced when using a sample to estimate the population variance. (C)</p> Signup and view all the answers

    What is the definition of sampling error?

    <p>The difference between the sample statistic and the corresponding population parameter. (C)</p> Signup and view all the answers

    Which statistical concept is used by polling organizations to estimate population characteristics from surveys?

    <p>Inferential statistics (C)</p> Signup and view all the answers

    How does the mode help describe a set of data?

    <p>The mode identifies the most frequently occurring data point. (B)</p> Signup and view all the answers

    Why is it important to understand both measures of central tendency and measures of dispersion when analyzing data?

    <p>Measures of central tendency provide information about the center of the data, while measures of dispersion indicate how spread out the data is. (A)</p> Signup and view all the answers

    Flashcards

    Importance of Research in EMS

    Research is crucial for improving practices and proving effectiveness in EMS.

    Outcomes-Based Research

    Research focused on determining if interventions improve patient outcomes like mortality and quality of life.

    National EMS Research Agenda (2001)

    A document guiding future EMS research in the U.S., emphasizing the need for research.

    Historic Practices in EMS

    Early EMS relied on practices from other fields without scientific backing.

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    Changing Practices Based on Research

    A hallmark of a profession, indicating that practices adapt as new research emerges.

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    Funding for EMS Research

    Critical for proving the effectiveness of EMS services and securing support.

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    Collaboration in EMS Research

    Encouraging partnerships between EMS and other disciplines to enhance research quality.

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    Ethics in EMS Research

    The necessity of ethical standards in conducting EMS research to ensure trust and integrity.

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    EMS Research Infrastructure

    A system for supporting EMS research through funding and training.

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    EMS Agenda 2050

    A research agenda aiming to develop a people-centered EMS system.

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    Evidence-Based Guidelines

    Guidelines developed from researched evidence for prehospital emergency care.

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    Importance of Funding in EMS

    Funding is crucial to train researchers and develop effective treatments.

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    Patient Outcome Information

    Data regarding the results of patient care used for evaluation and improvement.

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    Scientific Method

    A systematic process for inquiry that leads to knowledge and understanding.

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    Observation in Scientific Method

    The first step where questions arise from noticing phenomena.

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    Hypothesis Construction

    Creating a testable statement or question based on initial findings.

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    Testing The Hypothesis

    Experimenting to see if the hypothesis is true or false.

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    Data Collection and Analysis

    Gathering and evaluating information to validate findings or hypotheses.

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    Revision of Hypothesis

    Adjusting the hypothesis based on experimental results and observations.

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    Reporting Results

    Sharing experimental findings and their implications to the wider community.

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    Systematic Study

    A careful and organized approach to investigating phenomena in science.

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    Types of EMS Calls

    Categorization of emergency calls to understand patterns in phenomena.

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    Lunar Cycle Influence

    The potential relationship between the moon phases and psychiatric emergency calls.

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    Quantitative Research

    Research that involves measurable data to draw conclusions.

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    Independent Variable

    The variable that is manipulated to observe its effect on the dependent variable.

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    Dependent Variable

    The variable that is measured and affected in an experiment.

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    Nonexperimental Research

    Research that studies situations where variables cannot be manipulated.

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    Survey-Quantitative Research

    Research that collects data through surveys to analyze a population's opinions or behaviors.

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    Qualitative Research

    Research that focuses on understanding concepts, thoughts, or experiences rather than numerical data.

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    Retrospective Study

    Research that looks back at existing data to find patterns or insights.

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    Prospective Study

    Research that collects data going forward from a specific point in time.

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    Experimental Study

    Research that involves a treatment group and a control group, with random assignment of subjects.

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    Quasiexperimental Study

    Research similar to experimental but lacks random assignment of subjects.

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    Observational Study

    Research that does not involve manipulation of variables and studies subjects in their natural setting.

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    Validity of Studies

    The degree to which a study accurately reflects or assesses the concept it is intended to measure.

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    Control Group

    A group in an experiment that does not receive the treatment, used for comparison.

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    Meta-analysis

    A research method that combines data from multiple studies to develop a single conclusion.

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    Randomized Controlled Trial (RCT)

    An experiment where subjects are randomly assigned to treatment or control groups.

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    Single Blind Study

    A study where only the subjects are unaware of their group assignment.

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    Double Blind Study

    A study where both subjects and researchers are unaware of group assignments.

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    Nonrandomized Controlled Trials

    Studies with control and treatment groups that are not randomly assigned.

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    Cohort Study

    An observational study following a group with a certain condition over time.

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    Cross-sectional Study

    An observational study analyzing data from a specific point in time.

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    Case Series

    A study examining a small group of patients with similar conditions.

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    Case Report

    A detailed report on a single unique patient.

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    Expert Opinion

    Insights provided by specialists before scientific research is available.

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    Bias Reduction

    Methods used to minimize bias in studies (e.g., blinding).

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    Demographics

    Statistical characteristics of a population used in research.

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    Validity

    The accuracy of a study in measuring what it intends to.

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    Animal Research

    Research involving live animals to study biological systems and drug effects.

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    Bench Research

    Basic scientific research performed in a laboratory using controlled conditions.

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    External Validity

    The extent to which research results can be generalized to other situations or populations.

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    Internal Validity

    The degree to which a study accurately measures the relationship between variables without external interference.

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    Generalizability

    The ability to apply findings from a study to broader contexts beyond the original study group.

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    OPALS Study

    A major Canadian research study evaluating prehospital interventions in emergency medical services.

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    Bystander CPR Impact

    The significant role of bystander-administered CPR in improving cardiac arrest survival rates.

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    Advanced Life Support (ALS)

    A set of life-saving protocols and skills that extend beyond basic life support in emergencies.

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    Mortality and Morbidity in Trauma

    The rates of death and disease occurrence in patients receiving trauma care.

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    Nuremberg Code

    Guidelines established post-WWII to protect human subjects in research following unethical experiments.

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    Ethics in Medical Research

    Standards and guidelines ensuring the protection of study participants' rights and wellbeing.

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    Validity in Research

    Refers to how well a study's design and findings support its conclusions and interpretations.

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    Major Trauma Component

    Part of the OPALS study that focused on the effectiveness of ALS on trauma patients.

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    Historical Research Practices

    Methods and procedures in research that have evolved due to ethical considerations over time.

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    Research for EMS Practitioners

    Utilizing objective scientific studies to inform and improve EMS practices and protocols.

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    Full Moon Study Period

    A defined time span, usually three to six months, during which multiple full moon occurrences are reviewed in research.

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    Hypothesis

    A proposed explanation based on limited evidence, serving as a starting point for further investigation.

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    Statistical Analysis

    A mathematical method of analyzing collected data to draw conclusions about the hypothesis.

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    Iterative Process

    A cyclical procedure where steps are repeated based on new information to refine experiments.

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    Psychiatric Emergencies

    Intense mental health crises requiring immediate intervention, often believed to spike during full moons.

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    Cardiac Arrest Belief

    The common belief that more heart attacks occur during full moons, which lacks scientific evidence.

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    Full Moon and Childbirth

    The unfounded belief that childbirth rates increase during full moon phases, unsupported by studies.

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    Emergency Department Volumes

    The number of patients or cases seen in hospitals, disputed to be affected by full moon phases.

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    Mixed Research

    An approach combining both quantitative and qualitative methods, utilizing numbers and narratives together.

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    Publication of Results

    The process of sharing research findings in academic journals, regardless of hypothesis outcomes.

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    Full Moon Myth

    The widespread belief that full moons trigger unusual behavior or crises, often unsupported by scientific evidence.

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    Tuskegee Experiment

    A study where African-American men with syphilis were untreated to observe disease progression.

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    Helsinki Declaration

    An international document outlining ethical principles for medical research involving human subjects.

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    Belmont Report

    A report outlining ethical principles for research protection; published in 1979.

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    Informed Consent

    The process of ensuring research participants understand what participation involves.

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    Institutional Review Board (IRB)

    A committee that reviews and monitors research to ensure ethical standards are met.

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    Descriptive Statistics

    Statistics that summarize data characteristics, like mean and median.

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    Inferential Statistics

    Statistics that draw conclusions about a population based on sample data.

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    Mean

    The average value calculated by dividing the sum of values by their count.

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    Median

    The middle value in a data set, used when data is skewed.

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    Variance

    A measure of how much values in a data set differ from the mean.

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    Measures of Central Tendency

    Statistics that identify the center of a data set, including mean and median.

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    Dispersal of Data

    How spread out the data values are in a sample.

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    Normal Distribution

    A probability distribution shaped like a bell curve, indicating most data are near the average.

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    Skewness in Data

    The asymmetry in the distribution of data values, indicating uneven distribution.

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    Sampling Error

    The difference between a sample statistic and the actual population parameter.

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    Confidence Interval

    A range of values derived from a sample that likely contains the population parameter.

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    Statistical Significance

    A result that is unlikely to have occurred by chance, indicating a true effect.

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    Qualitative Statistics

    Data that isn't numeric but often categorical, such as gender or stages of cancer.

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    Quantitative Statistics

    Numeric data used for statistical analysis, like height or temperature.

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    Odds Ratio

    A measure of association between a risk factor and an outcome in case-control studies.

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    Nominal Data

    Categorical data without a specific order, like gender.

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    Ordinal Data

    Categorical data with a defined order, like stage I, II, III cancers.

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    t-test

    A statistical test to compare the means of two groups.

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    ANOVA

    Analysis of Variance, a method for comparing three or more groups.

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    Chi-Square Test

    A statistical test for independence between categorical variables.

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    Statistical Bias

    Systematic error that skews results in a certain direction.

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    Case-Control Study

    A retrospective study comparing individuals with a condition to those without.

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    95% Confidence Level

    A statistical term indicating the likelihood that the true parameter lies within a confidence interval.

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    Clinical Note on Statistics

    Recognizes the importance of proper statistical analysis in healthcare research.

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    Standard Deviation (SD)

    The square root of variance, indicating how much individual data points deviate from the mean.

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    Mode

    The most frequently occurring value in a dataset.

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    Estimation of Parameters

    Using sample data to estimate characteristics (parameters) of the broader population.

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    Variability

    The extent to which data points in a set differ from each other, not the same as variance.

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    Group Performance Comparison

    Analyzing performance differences by looking at metrics like variance and standard deviation.

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    Square the Differences

    To compute variance, find the differences from the mean, square them, and average those squares.

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    Example of Statistical Analysis

    Using data from two EMT classes to demonstrate variance and standard deviation differences despite having the same mean score.

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    Frequency Distribution Graph

    A graph that shows the number of occurrences of each value in a dataset, revealing the mode visually.

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    Data Spread Analysis

    Evaluating how widely data points are distributed; crucial for understanding datasets beyond just means.

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    Continuous Data

    Numerical data that can take any value (e.g., height, temperature).

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    Skewed Data

    Data that is not symmetrically distributed, often with outliers affecting the mean.

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    Standard Deviation

    The square root of the variance, showing how data points deviate from the mean.

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    Percentile

    A measure indicating the value below which a percentage of observations fall.

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    Frequency Distribution

    A summary of how often different values occur in a dataset.

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    Data Dispersion

    How spread out the values in a dataset are.

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    Population Parameter

    A characteristic or measure of a population, like mean or variance.

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    Outliers

    Extremely high or low values that can distort statistical measures.

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    Central Tendency

    Measures that describe the center of a dataset, such as mean, median, and mode.

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    Data Snooping

    Retrospective testing for significant results after data collection.

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    P Value

    Reflects the likelihood that results occur by chance if the hypothesis is true.

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    Association vs. Causation

    Association does not imply one thing causes another. It's a correlation of data points.

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    Confounding Variables

    External factors that can affect the outcome of a study or experiment.

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    Statistically Significant Results

    Findings unlikely to have occurred by chance, often set by a P value threshold.

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    Peer Review

    A process where other experts evaluate study quality before publication.

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    Replicability in Research

    The ability for other researchers to obtain the same results if they repeat the study.

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    Ethical Approval

    Necessary consent from an Institutional Review Board (IRB) for conducting studies involving human subjects.

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    Logical Conclusions

    Findings should be reasonable and stem directly from data analysis.

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    Confidence Level

    The probability that a population parameter lies within the confidence interval.

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    Sampling Size

    The number of observations or replicates included in a sample.

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    Parameter Estimation

    Using sample data to estimate population parameters.

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    Null Hypothesis

    The hypothesis that there is no effect or no association between variables.

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    Abstract

    A brief summary at the beginning of a research paper describing the study's purpose, methods, and results.

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    Methods Section

    Part of a research paper where the authors detail how the study was conducted.

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    Results Section

    Where researchers present data collected from studies but do not interpret it.

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    Discussion Section

    Part of a paper where findings are interpreted and the significance is discussed.

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    Sample Size

    The number of subjects included in a study, affecting its validity and generalizability.

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    Limitations of the Study

    Acknowledgments of potential weaknesses in a research study that may affect the results.

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    Call for Further Research

    Recommendations for additional studies to explore unanswered questions identified in the study.

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    Statistical Power

    The probability of correctly rejecting the null hypothesis when it is false.

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    Significance Level

    The threshold used to determine if results are statistically significant, commonly set at 0.05.

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    Abstract vs. Full Paper

    An abstract is a summary, while the full paper details the methods, results, and discussion.

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    Abstract in Research

    A concise summary of a research paper used for presentations and citations.

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    Peer Review Process

    An evaluation process where experts assess the quality of research before publication.

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    IRB Approval

    Institutional Review Board approval ensuring ethical standards in research with human subjects.

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    Open Access Journals

    Scientific journals that allow free access to their articles without barriers.

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    PubMed Database

    A free database for accessing medical and scientific literature.

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    Sample Size in Research

    The number of participants included in a study to ensure reliable results.

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    Bias in Research

    Systematic errors in study design or analysis that can skew results.

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    Random Sampling

    A method of selecting participants where everyone has an equal chance of being chosen.

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    Statistical Tests

    Methods used to analyze data and draw conclusions in a study.

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    Hypothesis Clarity

    The need for a clear description of what is being tested in a study.

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    Quality of Published Papers

    The objective evaluation of the reliability and integrity of research publications.

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    Population vs Sample

    Population includes all members; sample is a subset used for analysis.

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    Quantitative Data

    Data that can be measured and expressed numerically.

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    Clinical Research Importance

    Research is vital for confirming effective practices in EMS.

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    Study Notes

    Evolution of Modern EMS Research

    • EMS initially lacked scientific backing, relying on practices from other fields (e.g., hospitals, fire departments) based on expert opinions.
    • Research has since revealed some previously intuitive practices, like endotracheal intubation, MAST, and spinal immobilization, to be less effective than previously believed.
    • Research is crucial for EMS to demonstrate effectiveness and cost-efficiency, garnering funding and support. Outcomes-based research helps evaluate procedure, drug, and treatment effectiveness on patient outcomes (mortality, morbidity, quality of life).

    National EMS Research Agenda

    • The 2001 National EMS Research Agenda, published by NHTSA, highlighted the need for EMS research and recommended:
      • Developing a cadre of EMS researchers.
      • Encouraging collaboration among researchers from various disciplines.
      • Establishing reliable government funding for EMS research.
      • Creating alternative funding sources outside of government.
      • Acknowledging the necessity of research for improved patient care.
      • Improving ethical approaches to research.
    • This agenda emphasized a national investment in EMS research to overcome current obstacles.

    EMS Agenda 2050

    • EMS Agenda 2050 builds upon the 2001 agenda with the goal of developing a people-centered EMS system.
    • A key component is creating evidence-based guidelines for prehospital emergency care.
    • Increased funding is required to develop treatments for health issues crucial to EMS, including injury and sudden cardiac arrest.

    Scientific Method Overview

    • Science is defined as knowledge gained through study and practice, developed through the scientific method.
    • Research is the systematic study to discover facts and principles—crucial for understanding EMS application and limits
    • EMS involves both the science of knowledge and the art of applying it
    • The scientific method is crucial for unbiased and reproducible research, encompassing observation, research, hypothesis construction, experimentation, result analysis/conclusion, revision, and reporting.

    Scientific Method in EMS Research

    • Research steps involve observation, data collection, hypothesis construction, experimentation, result analysis, and reporting.
    • Example: Researching the relationship between the full moon and psychiatric emergencies. Requires defining "psychiatric calls", "full moon," and time intervals for study.
    • Iterative process: Experimentation sometimes requires revision to further refine the study.

    Full Moon Myth Debunked

    • Many believe full moons correlate with increased emergency calls, but research disproves this for incidents like:
      • Heart attacks and cardiac arrests
      • Psychiatric emergencies
      • Childbirths
      • General emergencies Specific examples included New Jersey (cardiac arrest), Austrian (coronary events), 2017 (psychiatric), Mayo Clinic (psychosis), Irish (births), Illinois (ED volume), and German (multiple myths).

    Research Types

    • Research is categorized as quantitative, qualitative, or mixed methods.
    • Quantitative: Objective, numerical. Examples include studying the effect of EMS response times on patient survival.
    • Qualitative: Subjective, descriptive, and focused on understanding the “why.” Examples include studies on EMS provider stress.
    • Mixed methods: Combines quantitative and qualitative approaches.

    Study Design

    • Studies can be retrospective (using existing data) or prospective (collecting new data).
    • Prospective studies are typically more reliable due to a designed instrument and less opportunity for bias.
    • However, retrospective studies have immediate access to available data and are typically less expensive.

    Validity in Research

    • Experimental designs have varying degrees of validity, including:
      • Randomized controlled trials (RCTs): Subjects randomly assigned to treatment and control groups; considered most valid.
      • Quasiexperimental studies: Subjects not randomly assigned; less valid than RCTs, but sometimes necessary.
      • Observational studies: No control group; less valid than experimental or quasi-experimental, but important in situations where withholding treatment is unethical.
    • Meta-analysis: Combining results from multiple RCTs increases generalizability.

    Common Study Types

    • Cohort studies: Following groups of subjects over time to compare outcomes. Example: Twin studies looking at genetic factors.
    • Cross-sectional studies: Comparing various groups at a single point in time. Example: Studying EMS provider training level at a specific date.
    • Case series: Studying a group of patients with similar conditions. Example: Identifying the AIDS epidemic.
    • Case report: Detailed study of an individual patient.
    • Animal/Bench research: Important for understanding drug/procedure effects in biological systems or foundational research before human studies begin.

    Evaluating Research

    • When examining research supporting clinical practices, consider:
      • Peer review
      • Study hypothesis clarity
      • Ethical considerations (IRB approval)
      • Study design appropriateness (including population similarity and inclusion/exclusion criteria)
      • Sampling methods (e.g., random vs. convenience sampling)
      • Sample size/statistical power
      • Confounding variables
      • Statistical tests appropriateness and potential data snooping
      • Proper result reporting (including confidence intervals)
      • Distinction between association and causation
    • How good was the EMS system in which the study was done? (example: Effect of AED if response time is 15 minutes)

    Statistics in Research

    • Descriptive statistics: Describe sample data (mean, median, variance, standard deviation, mode)
    • Inferential statistics: Draw inferences about populations from a sample. Includes sampling error.
    • Confidence intervals: Range of values containing a true value with a specified confidence level. If interval includes zero, results are not significant.
    • Statistical tests such as t-tests, ANOVA, chi-square, and odds ratios aid in studying correlations and comparing groups.

    Research Paper Structure for EMS

    • Abstract: Brief summary of study needs, methods, and results
    • Introduction: Overview of previous research and study purpose.
    • Methods: Details on methods used—including population, subject selection, interventions
    • Results: Data presentation with tables/graphs, but no interpretation
    • Discussion: Interpretation and significance of results and limitations
    • Conclusion: Brief recap of key findings
      • Peer review enhances study quality; authors submit to the journal, undergo review and often revisions before publication. Reviewers are often blinded to details and work to ensure objectivity.

    Ethical Considerations in Research

    • Nuremberg Code (1947): Established guidelines for ethical human research.
    • Tuskegee Syphilis Study (1932-1972): Highlighted unethical research practices in the US.
    • Helsinki Declaration (1964): Emphasized human rights, informed consent by the subject, and protection of patient safety.
    • Belmont Report (1979): U.S. guidelines for ethical practices in protecting human subjects in research
    • Institutional Review Board (IRB) approval is required for many medical studies to protect human subjects
    • Ensuring the right of those who serve as research study subjects

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    Test your knowledge on the history and evolution of Emergency Medical Services (EMS) research. This quiz covers key practices, characteristics distinguishing professions from trades, and the importance of outcomes-based research in EMS. Assess your understanding of the National EMS Research Agenda and its impact on current practices.

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