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4530 Exam One Hard - Test
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4530 Exam One Hard - Test

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Questions and Answers

What is the primary focus of all health initiatives discussed?

  • Individual patient care
  • Population and community focus (correct)
  • Advancements in medical technology
  • Pharmaceutical interventions
  • Which diet would be most recommended for reducing health risks associated with high LDL cholesterol?

  • Keto diet
  • Mediterranean diet
  • Paleo diet
  • DASH diet (correct)
  • What distinguishes analytic epidemiology from descriptive epidemiology?

  • Concentrates on health outcomes in populations
  • Focuses on statistical methodologies
  • Examines historical disease patterns
  • Studies the why and how of diseases (correct)
  • What does prevalence measure in a population?

    <p>Total cases at a specific time</p> Signup and view all the answers

    What is considered the biggest predictor of health outcomes?

    <p>Socioeconomic status</p> Signup and view all the answers

    Which term describes the rate of deaths among individuals with a specific disease?

    <p>Case fatality rate</p> Signup and view all the answers

    The epidemiological triangle consists of which three components?

    <p>Agent, host, environment</p> Signup and view all the answers

    Which factor does positive predictive value consider when evaluating disease screening outcomes?

    <p>Community prevalence of the disease</p> Signup and view all the answers

    Which population group is at the highest risk for environmental health hazards due to their physiological characteristics?

    <p>Elderly individuals</p> Signup and view all the answers

    What is the target percentage necessary for achieving herd immunity?

    <p>90-95%</p> Signup and view all the answers

    Which statement about a diagnostic test's specificity is true if it has 70% specificity?

    <p>It has a 30% chance of indicating a positive result for a non-affected individual.</p> Signup and view all the answers

    Which method of surveillance involves public health workers actively searching for cases of disease?

    <p>Active surveillance</p> Signup and view all the answers

    What characteristic of a toxin makes children particularly vulnerable compared to adults?

    <p>Children breathe in more air per body surface area.</p> Signup and view all the answers

    Which statement correctly relates to the causality of cigarette smoking and lung cancer?

    <p>There is significant epidemiological evidence linking smoking to lung cancer.</p> Signup and view all the answers

    Which group is NOT considered at high risk for foodborne illnesses?

    <p>Adults aged 30-50</p> Signup and view all the answers

    What is one significant downside of sentinel surveillance?

    <p>It may not be representative of the entire population.</p> Signup and view all the answers

    What is the primary effect of herd immunity when vaccine coverage reaches 90-95%?

    <p>Reduction of disease transmission even among non-immune individuals</p> Signup and view all the answers

    What is a significant concern regarding the latency period of diseases like HIV?

    <p>Individuals can transmit the virus without showing symptoms for a long time</p> Signup and view all the answers

    Which of the following groups is considered to be at the highest risk from environmental pollutants?

    <p>Children under 5 years old</p> Signup and view all the answers

    What is the primary purpose of active surveillance in public health?

    <p>To engage directly with communities to identify cases of disease</p> Signup and view all the answers

    How does specificity of a diagnostic test impact its results?

    <p>Higher specificity results in fewer false positives</p> Signup and view all the answers

    Which of the following is a characteristic of sentinel surveillance?

    <p>It focuses on specific, select groups</p> Signup and view all the answers

    Why is the role of epidemiological studies critical in establishing causality between cigarette smoking and lung cancer?

    <p>It requires extensive data across large populations to be credible</p> Signup and view all the answers

    What risk does mercury pose particularly to pregnant women and their fetuses?

    <p>It can cause developmental issues in the fetus</p> Signup and view all the answers

    What is the primary significance of the epidemiological triangle in public health?

    <p>It serves as a model to understand the interrelation of agent, host, and environment.</p> Signup and view all the answers

    Which of the following diets is primarily recommended for weight management in individuals with diabetes?

    <p>DASH diet</p> Signup and view all the answers

    What does the case fatality rate specifically measure in the context of a disease?

    <p>The proportion of individuals who die from the disease within a specified timeframe.</p> Signup and view all the answers

    Which term describes the occurrence of a disease in a population at a higher rate than normally expected?

    <p>Epidemic</p> Signup and view all the answers

    How is positive predictive value crucial for understanding screening tests in public health?

    <p>It determines the likelihood that a positive test result reflects the actual presence of disease.</p> Signup and view all the answers

    What was a significant health shift observed in the 1950s that changed the leading causes of mortality?

    <p>Development of antibiotics and vaccines leading to reduced infectious diseases.</p> Signup and view all the answers

    What distinguishes trans fats from saturated fats in terms of their health impact?

    <p>Trans fats raise LDL cholesterol and lower HDL cholesterol, increasing inflammation.</p> Signup and view all the answers

    Which statement about the terms 'incidence' and 'prevalence' is correct?

    <p>Prevalence measures the total number of new and existing cases over time.</p> Signup and view all the answers

    What does the attack rate measure in a population?

    <p>The proportion of people exposed to a disease agent who actually become ill</p> Signup and view all the answers

    Which recommendation would be inappropriate for managing high LDL cholesterol levels?

    <p>Increasing the intake of saturated fats</p> Signup and view all the answers

    Which statement accurately reflects the relationship between socioeconomic status and health outcomes?

    <p>Lower socioeconomic status consistently predicts poorer health.</p> Signup and view all the answers

    How is the case fatality rate defined?

    <p>The percentage of individuals with a disease who die within a specified time frame</p> Signup and view all the answers

    Which term refers to the consistent presence of a disease within a given geographical area?

    <p>Endemic</p> Signup and view all the answers

    What is the primary focus of analytic epidemiology?

    <p>To explain the reasons and mechanisms behind health outcomes</p> Signup and view all the answers

    What key insight does positive predictive value provide in disease screening?

    <p>It measures the likelihood of a positive result indicating actual disease presence.</p> Signup and view all the answers

    What shift in disease patterns occurred by the 1950s that significantly impacted public health?

    <p>A transition from infectious diseases to chronic illnesses as leading causes of death</p> Signup and view all the answers

    What is essential for achieving herd immunity in a population?

    <p>90-95% vaccine coverage</p> Signup and view all the answers

    Which group is considered to be at the highest risk for foodborne illnesses?

    <p>Pregnant women</p> Signup and view all the answers

    How does a flu test with 70% specificity impact its false positive rate?

    <p>It results in a 30% false positive rate.</p> Signup and view all the answers

    What is a significant characteristic of active surveillance?

    <p>Public health workers actively search for cases.</p> Signup and view all the answers

    In which scenario is environmental health particularly concerning?

    <p>For children under 5 due to their behaviors</p> Signup and view all the answers

    What is a notable challenge when establishing causality from epidemiological studies?

    <p>Gathering sufficient data over years</p> Signup and view all the answers

    Which of the following best describes passive surveillance?

    <p>Data collected through regular monitoring of health facilities.</p> Signup and view all the answers

    What is a significant risk posed by lead exposure in children?

    <p>Behavioral and developmental impairment</p> Signup and view all the answers

    Which of the following best describes the term 'endemic' in relation to disease occurrence?

    <p>The consistent presence of a disease within a geographical area</p> Signup and view all the answers

    What is the primary significance of understanding the positive predictive value in public health screenings?

    <p>It determines the likelihood of a disease being present in a community based on screening results.</p> Signup and view all the answers

    Which of the following statements accurately reflects a common misconception regarding trans fats?

    <p>Trans fats are considered healthier alternatives to saturated fats.</p> Signup and view all the answers

    What does the concept of attack rates indicate in epidemiology?

    <p>The proportion of individuals exposed to a disease who develop the illness.</p> Signup and view all the answers

    Which of the following factors is considered a crucial social determinant of health?

    <p>Access to healthcare services.</p> Signup and view all the answers

    In what context is the term 'case fatality rate' primarily used, and what does it signify?

    <p>To measure the severity of a disease by indicating the percentage of patients who die from it.</p> Signup and view all the answers

    Which of the following statements best describes the epidemiological triangle's components?

    <p>Agent, Host, and Environment are essential for assessing disease transmission dynamics.</p> Signup and view all the answers

    What distinguishes analytic epidemiology from descriptive epidemiology?

    <p>Analytic epidemiology looks at the 'why' and 'how' of diseases, while descriptive epidemiology focuses on 'who,' 'where,' and 'when.'</p> Signup and view all the answers

    Which group is likely to experience the highest environmental health risks due to physiological characteristics?

    <p>Elderly individuals</p> Signup and view all the answers

    What is a significant limitation of active surveillance in public health?

    <p>It can be resource-intensive and expensive.</p> Signup and view all the answers

    Which concept best represents the effect where a significant portion of a population becomes immune to a disease, thereby reducing its spread?

    <p>Herd immunity</p> Signup and view all the answers

    In evaluating a diagnostic test, what does a specificity of 70% imply regarding false positives?

    <p>30% of positive results are false positives.</p> Signup and view all the answers

    What type of surveillance involves the routine collection of data with notifiable diseases, often leading to statistics recorded in public health agencies?

    <p>Passive surveillance</p> Signup and view all the answers

    Which statement best describes the criteria needed to establish causality between cigarette smoking and lung cancer?

    <p>It must come from large epidemiological studies with considerable data.</p> Signup and view all the answers

    What is the primary concern for pregnant women regarding the environmental toxin mercury?

    <p>It poses risks to fetal development.</p> Signup and view all the answers

    What impact does a long latency period have on infectious diseases like HIV?

    <p>It allows individuals to remain asymptomatic while remaining infectious.</p> Signup and view all the answers

    What is a key aspect of the epidemiological triangle?

    <p>It includes the agent, host, and environment.</p> Signup and view all the answers

    Which dietary recommendation is best to replace unhealthy trans fats?

    <p>Incorporate omega-3 fatty acids.</p> Signup and view all the answers

    What does the positive predictive value primarily consider?

    <p>The prevalence of the disease in the community.</p> Signup and view all the answers

    Which term describes the occurrence of a disease caused by viral exposure that affects community members?

    <p>Epidemic</p> Signup and view all the answers

    How is incidence different from prevalence in epidemiology?

    <p>Incidence focuses on new cases occurring during a specific time period.</p> Signup and view all the answers

    What would be an appropriate strategy for reducing high LDL cholesterol based on dietary guidelines?

    <p>Limit intake of simple carbohydrates.</p> Signup and view all the answers

    Which factor significantly influences an individual's health status according to social determinants?

    <p>Socioeconomic status</p> Signup and view all the answers

    What does the attack rate refer to in an epidemiological context?

    <p>The proportion of individuals infected after exposure to a risk factor.</p> Signup and view all the answers

    What is the main reason why children are particularly vulnerable to environmental health hazards?

    <p>They have a higher metabolic rate, causing faster toxin absorption.</p> Signup and view all the answers

    Which statement about herd immunity is true when vaccine coverage is at 90-95%?

    <p>It significantly reduces the likelihood of disease spread.</p> Signup and view all the answers

    What is a major limitation of active surveillance in public health?

    <p>It is resource-intensive and costly.</p> Signup and view all the answers

    Which of the following groups is least likely to be considered at high risk for foodborne illnesses?

    <p>Young adults aged 18-25.</p> Signup and view all the answers

    What does a specificity of 70% in a diagnostic test imply?

    <p>It generates a 30% false positivity rate.</p> Signup and view all the answers

    What is a crucial factor to consider in establishing causality from epidemiological studies?

    <p>The timeline of exposure and disease occurrence.</p> Signup and view all the answers

    Which of the following is a characteristic of passive surveillance?

    <p>Data is collected routinely without additional effort.</p> Signup and view all the answers

    What health concern does lead exposure primarily pose to children?

    <p>Impairment of cognitive and physical development.</p> Signup and view all the answers

    Study Notes

    Public Health Overview

    • Focuses on community population health.
    • Core functions of public health include assessment, policy development, and assurance.

    Lillian Wald and Henry Street Settlement

    • Lillian Wald founded the Henry Street Settlement to provide social and health services to the immigrant community in New York City.

    Health Promotion and Risk Reduction

    • Interpretation of lab values is critical for health assessments, including lipid panels.
    • High LDL and cholesterol levels necessitate dietary changes and health recommendations.
    • Emphasis on lifestyle adjustments including diet modification.

    Dietary Changes

    • DASH diet promotes heart health by emphasizing whole foods and reduced sodium.
    • For diabetes, weight loss and reducing simple carbohydrates are vital.
    • Trans fats elevate LDL and diminish HDL cholesterol, while saturated fats increase both.
    • Omega-3 fatty acids are healthier alternatives to avoid trans fats.

    Epidemiology Concepts

    • Descriptive epidemiology (who) vs analytic epidemiology (why and how).
    • Transition from infectious diseases to chronic illnesses occurred post-1950s with advancements in antibiotics and vaccines.
    • Definitions of disease spread:
      • Sporadic: occasional cases.
      • Endemic: consistent presence in a particular area.
      • Epidemic: sudden increase above expected levels.
      • Pandemic: widespread across regions.

    Social Determinants of Health

    • Socioeconomic status is the most significant predictor of health outcomes.

    Prevalence and Incidence

    • Prevalence: Total number of existing cases within a specific population at a given time.
    • Incidence: Number of new cases in a population during a specific time frame.

    Epidemiological Measures

    • Positive Predictive Value: Reflects disease presence in a community.
    • Attack Rates: Proportion of exposed individuals who contract the disease.
    • Case Fatality Rate: Ratio of deaths to total cases during a specific time, indicating disease severity.

    Epidemiological Triangle

    • Consists of three components: agent, host, and environment.
    • The triangle is used to understand disease transmission and to implement prevention strategies.

    Natural Life History of Disease

    • Investigates the onset, spread, latency, and infectious periods of a disease, e.g., HIV.

    Community/Herd Immunity

    • Aim for 90-95% vaccination coverage to ensure herd immunity and control outbreaks.

    Sensitivity and Specificity

    • Sensitivity measures true positive rate; specificity measures true negative rate.
    • High sensitivity and specificity reduce false positives/negatives, e.g., flu tests typically have 70% specificity.

    Causality and Environmental Health

    • Strong evidence links smoking with lung cancer drawn from extensive epidemiological studies.
    • Pesticides and toxic substances pose risks, especially for vulnerable populations like children and pregnant women.

    Environmental Health Considerations

    • Children, elderly, and pregnant women are at highest risk for environmental hazards due to physiological factors.
    • It's essential to take thorough environmental histories to identify potential exposures.

    Surveillance in Public Health

    • Involves outbreak investigations and various types of surveillance:
      • Active Surveillance: Public health workers actively seek disease cases, which can be costly.
      • Passive Surveillance: Relies on routine data collection and reporting.
      • Sentinel Surveillance: Monitors select groups, may not reflect the broader population.

    Foodborne Illnesses

    • Highest risk demographics include children under 5, immunocompromised individuals, older adults, and pregnant women.
    • Special considerations are needed for each group's vulnerability to foodborne pathogens.

    Public Health Overview

    • Focuses on community population health.
    • Core functions of public health include assessment, policy development, and assurance.

    Lillian Wald and Henry Street Settlement

    • Lillian Wald founded the Henry Street Settlement to provide social and health services to the immigrant community in New York City.

    Health Promotion and Risk Reduction

    • Interpretation of lab values is critical for health assessments, including lipid panels.
    • High LDL and cholesterol levels necessitate dietary changes and health recommendations.
    • Emphasis on lifestyle adjustments including diet modification.

    Dietary Changes

    • DASH diet promotes heart health by emphasizing whole foods and reduced sodium.
    • For diabetes, weight loss and reducing simple carbohydrates are vital.
    • Trans fats elevate LDL and diminish HDL cholesterol, while saturated fats increase both.
    • Omega-3 fatty acids are healthier alternatives to avoid trans fats.

    Epidemiology Concepts

    • Descriptive epidemiology (who) vs analytic epidemiology (why and how).
    • Transition from infectious diseases to chronic illnesses occurred post-1950s with advancements in antibiotics and vaccines.
    • Definitions of disease spread:
      • Sporadic: occasional cases.
      • Endemic: consistent presence in a particular area.
      • Epidemic: sudden increase above expected levels.
      • Pandemic: widespread across regions.

    Social Determinants of Health

    • Socioeconomic status is the most significant predictor of health outcomes.

    Prevalence and Incidence

    • Prevalence: Total number of existing cases within a specific population at a given time.
    • Incidence: Number of new cases in a population during a specific time frame.

    Epidemiological Measures

    • Positive Predictive Value: Reflects disease presence in a community.
    • Attack Rates: Proportion of exposed individuals who contract the disease.
    • Case Fatality Rate: Ratio of deaths to total cases during a specific time, indicating disease severity.

    Epidemiological Triangle

    • Consists of three components: agent, host, and environment.
    • The triangle is used to understand disease transmission and to implement prevention strategies.

    Natural Life History of Disease

    • Investigates the onset, spread, latency, and infectious periods of a disease, e.g., HIV.

    Community/Herd Immunity

    • Aim for 90-95% vaccination coverage to ensure herd immunity and control outbreaks.

    Sensitivity and Specificity

    • Sensitivity measures true positive rate; specificity measures true negative rate.
    • High sensitivity and specificity reduce false positives/negatives, e.g., flu tests typically have 70% specificity.

    Causality and Environmental Health

    • Strong evidence links smoking with lung cancer drawn from extensive epidemiological studies.
    • Pesticides and toxic substances pose risks, especially for vulnerable populations like children and pregnant women.

    Environmental Health Considerations

    • Children, elderly, and pregnant women are at highest risk for environmental hazards due to physiological factors.
    • It's essential to take thorough environmental histories to identify potential exposures.

    Surveillance in Public Health

    • Involves outbreak investigations and various types of surveillance:
      • Active Surveillance: Public health workers actively seek disease cases, which can be costly.
      • Passive Surveillance: Relies on routine data collection and reporting.
      • Sentinel Surveillance: Monitors select groups, may not reflect the broader population.

    Foodborne Illnesses

    • Highest risk demographics include children under 5, immunocompromised individuals, older adults, and pregnant women.
    • Special considerations are needed for each group's vulnerability to foodborne pathogens.

    Public Health Overview

    • Focuses on community population health.
    • Core functions of public health include assessment, policy development, and assurance.

    Lillian Wald and Henry Street Settlement

    • Lillian Wald founded the Henry Street Settlement to provide social and health services to the immigrant community in New York City.

    Health Promotion and Risk Reduction

    • Interpretation of lab values is critical for health assessments, including lipid panels.
    • High LDL and cholesterol levels necessitate dietary changes and health recommendations.
    • Emphasis on lifestyle adjustments including diet modification.

    Dietary Changes

    • DASH diet promotes heart health by emphasizing whole foods and reduced sodium.
    • For diabetes, weight loss and reducing simple carbohydrates are vital.
    • Trans fats elevate LDL and diminish HDL cholesterol, while saturated fats increase both.
    • Omega-3 fatty acids are healthier alternatives to avoid trans fats.

    Epidemiology Concepts

    • Descriptive epidemiology (who) vs analytic epidemiology (why and how).
    • Transition from infectious diseases to chronic illnesses occurred post-1950s with advancements in antibiotics and vaccines.
    • Definitions of disease spread:
      • Sporadic: occasional cases.
      • Endemic: consistent presence in a particular area.
      • Epidemic: sudden increase above expected levels.
      • Pandemic: widespread across regions.

    Social Determinants of Health

    • Socioeconomic status is the most significant predictor of health outcomes.

    Prevalence and Incidence

    • Prevalence: Total number of existing cases within a specific population at a given time.
    • Incidence: Number of new cases in a population during a specific time frame.

    Epidemiological Measures

    • Positive Predictive Value: Reflects disease presence in a community.
    • Attack Rates: Proportion of exposed individuals who contract the disease.
    • Case Fatality Rate: Ratio of deaths to total cases during a specific time, indicating disease severity.

    Epidemiological Triangle

    • Consists of three components: agent, host, and environment.
    • The triangle is used to understand disease transmission and to implement prevention strategies.

    Natural Life History of Disease

    • Investigates the onset, spread, latency, and infectious periods of a disease, e.g., HIV.

    Community/Herd Immunity

    • Aim for 90-95% vaccination coverage to ensure herd immunity and control outbreaks.

    Sensitivity and Specificity

    • Sensitivity measures true positive rate; specificity measures true negative rate.
    • High sensitivity and specificity reduce false positives/negatives, e.g., flu tests typically have 70% specificity.

    Causality and Environmental Health

    • Strong evidence links smoking with lung cancer drawn from extensive epidemiological studies.
    • Pesticides and toxic substances pose risks, especially for vulnerable populations like children and pregnant women.

    Environmental Health Considerations

    • Children, elderly, and pregnant women are at highest risk for environmental hazards due to physiological factors.
    • It's essential to take thorough environmental histories to identify potential exposures.

    Surveillance in Public Health

    • Involves outbreak investigations and various types of surveillance:
      • Active Surveillance: Public health workers actively seek disease cases, which can be costly.
      • Passive Surveillance: Relies on routine data collection and reporting.
      • Sentinel Surveillance: Monitors select groups, may not reflect the broader population.

    Foodborne Illnesses

    • Highest risk demographics include children under 5, immunocompromised individuals, older adults, and pregnant women.
    • Special considerations are needed for each group's vulnerability to foodborne pathogens.

    Public Health Overview

    • Focuses on community population health.
    • Core functions of public health include assessment, policy development, and assurance.

    Lillian Wald and Henry Street Settlement

    • Lillian Wald founded the Henry Street Settlement to provide social and health services to the immigrant community in New York City.

    Health Promotion and Risk Reduction

    • Interpretation of lab values is critical for health assessments, including lipid panels.
    • High LDL and cholesterol levels necessitate dietary changes and health recommendations.
    • Emphasis on lifestyle adjustments including diet modification.

    Dietary Changes

    • DASH diet promotes heart health by emphasizing whole foods and reduced sodium.
    • For diabetes, weight loss and reducing simple carbohydrates are vital.
    • Trans fats elevate LDL and diminish HDL cholesterol, while saturated fats increase both.
    • Omega-3 fatty acids are healthier alternatives to avoid trans fats.

    Epidemiology Concepts

    • Descriptive epidemiology (who) vs analytic epidemiology (why and how).
    • Transition from infectious diseases to chronic illnesses occurred post-1950s with advancements in antibiotics and vaccines.
    • Definitions of disease spread:
      • Sporadic: occasional cases.
      • Endemic: consistent presence in a particular area.
      • Epidemic: sudden increase above expected levels.
      • Pandemic: widespread across regions.

    Social Determinants of Health

    • Socioeconomic status is the most significant predictor of health outcomes.

    Prevalence and Incidence

    • Prevalence: Total number of existing cases within a specific population at a given time.
    • Incidence: Number of new cases in a population during a specific time frame.

    Epidemiological Measures

    • Positive Predictive Value: Reflects disease presence in a community.
    • Attack Rates: Proportion of exposed individuals who contract the disease.
    • Case Fatality Rate: Ratio of deaths to total cases during a specific time, indicating disease severity.

    Epidemiological Triangle

    • Consists of three components: agent, host, and environment.
    • The triangle is used to understand disease transmission and to implement prevention strategies.

    Natural Life History of Disease

    • Investigates the onset, spread, latency, and infectious periods of a disease, e.g., HIV.

    Community/Herd Immunity

    • Aim for 90-95% vaccination coverage to ensure herd immunity and control outbreaks.

    Sensitivity and Specificity

    • Sensitivity measures true positive rate; specificity measures true negative rate.
    • High sensitivity and specificity reduce false positives/negatives, e.g., flu tests typically have 70% specificity.

    Causality and Environmental Health

    • Strong evidence links smoking with lung cancer drawn from extensive epidemiological studies.
    • Pesticides and toxic substances pose risks, especially for vulnerable populations like children and pregnant women.

    Environmental Health Considerations

    • Children, elderly, and pregnant women are at highest risk for environmental hazards due to physiological factors.
    • It's essential to take thorough environmental histories to identify potential exposures.

    Surveillance in Public Health

    • Involves outbreak investigations and various types of surveillance:
      • Active Surveillance: Public health workers actively seek disease cases, which can be costly.
      • Passive Surveillance: Relies on routine data collection and reporting.
      • Sentinel Surveillance: Monitors select groups, may not reflect the broader population.

    Foodborne Illnesses

    • Highest risk demographics include children under 5, immunocompromised individuals, older adults, and pregnant women.
    • Special considerations are needed for each group's vulnerability to foodborne pathogens.

    Public Health Overview

    • Focuses on community population health.
    • Core functions of public health include assessment, policy development, and assurance.

    Lillian Wald and Henry Street Settlement

    • Lillian Wald founded the Henry Street Settlement to provide social and health services to the immigrant community in New York City.

    Health Promotion and Risk Reduction

    • Interpretation of lab values is critical for health assessments, including lipid panels.
    • High LDL and cholesterol levels necessitate dietary changes and health recommendations.
    • Emphasis on lifestyle adjustments including diet modification.

    Dietary Changes

    • DASH diet promotes heart health by emphasizing whole foods and reduced sodium.
    • For diabetes, weight loss and reducing simple carbohydrates are vital.
    • Trans fats elevate LDL and diminish HDL cholesterol, while saturated fats increase both.
    • Omega-3 fatty acids are healthier alternatives to avoid trans fats.

    Epidemiology Concepts

    • Descriptive epidemiology (who) vs analytic epidemiology (why and how).
    • Transition from infectious diseases to chronic illnesses occurred post-1950s with advancements in antibiotics and vaccines.
    • Definitions of disease spread:
      • Sporadic: occasional cases.
      • Endemic: consistent presence in a particular area.
      • Epidemic: sudden increase above expected levels.
      • Pandemic: widespread across regions.

    Social Determinants of Health

    • Socioeconomic status is the most significant predictor of health outcomes.

    Prevalence and Incidence

    • Prevalence: Total number of existing cases within a specific population at a given time.
    • Incidence: Number of new cases in a population during a specific time frame.

    Epidemiological Measures

    • Positive Predictive Value: Reflects disease presence in a community.
    • Attack Rates: Proportion of exposed individuals who contract the disease.
    • Case Fatality Rate: Ratio of deaths to total cases during a specific time, indicating disease severity.

    Epidemiological Triangle

    • Consists of three components: agent, host, and environment.
    • The triangle is used to understand disease transmission and to implement prevention strategies.

    Natural Life History of Disease

    • Investigates the onset, spread, latency, and infectious periods of a disease, e.g., HIV.

    Community/Herd Immunity

    • Aim for 90-95% vaccination coverage to ensure herd immunity and control outbreaks.

    Sensitivity and Specificity

    • Sensitivity measures true positive rate; specificity measures true negative rate.
    • High sensitivity and specificity reduce false positives/negatives, e.g., flu tests typically have 70% specificity.

    Causality and Environmental Health

    • Strong evidence links smoking with lung cancer drawn from extensive epidemiological studies.
    • Pesticides and toxic substances pose risks, especially for vulnerable populations like children and pregnant women.

    Environmental Health Considerations

    • Children, elderly, and pregnant women are at highest risk for environmental hazards due to physiological factors.
    • It's essential to take thorough environmental histories to identify potential exposures.

    Surveillance in Public Health

    • Involves outbreak investigations and various types of surveillance:
      • Active Surveillance: Public health workers actively seek disease cases, which can be costly.
      • Passive Surveillance: Relies on routine data collection and reporting.
      • Sentinel Surveillance: Monitors select groups, may not reflect the broader population.

    Foodborne Illnesses

    • Highest risk demographics include children under 5, immunocompromised individuals, older adults, and pregnant women.
    • Special considerations are needed for each group's vulnerability to foodborne pathogens.

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    Description

    This quiz covers key concepts in public health, including the core functions that support community health. It also explores dietary changes for health promotion and risk reduction, featuring insights on the DASH diet and cholesterol management. Additionally, it highlights the contributions of Lillian Wald and the importance of epidemiological concepts.

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