Biostatistics and Epidemiology Quiz

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Which type of experimental design is characterized by the lack of random assignment of participants to comparison groups?

True experimental design

Randomized controlled trial

Pretest-posttest control group design

Quasi-experimental design (correct)

What is the primary purpose of using a control group in an experimental design?

To account for the effects of extraneous factors

To enable the researcher to draw meaningful conclusions about observed differences

To provide a basis for comparing two or more conditions

All of the above (correct)

Which type of research involves the measurement of outcomes using numerical data under standardized conditions?

Quantitative research (correct)

Exploratory study

Qualitative research

Correlational study

Which type of study design is used to investigate the relationship between variables without any intervention or manipulation?

Correlational study Signup and view all the answers

Which type of study design involves the collection of data at a single point in time to examine the relationship between variables?

Cross-sectional study Signup and view all the answers

What is the primary purpose of an exploratory study?

To gain a better understanding of a phenomenon Signup and view all the answers

Which type of study design is characterized by descriptive and exploratory research purposes, seeking to understand human experiences and interactions through methods like in-depth interviews and direct observations?

Qualitative study Signup and view all the answers

If a study aims to explore associations and generate hypotheses, which type of research design would be most appropriate?

Exploratory research Signup and view all the answers

Which study design involves examining a cross-section of a population at a specific point in time?

Cross-sectional study Signup and view all the answers

In the context of research design, which term refers to the evaluation of an intervention's effectiveness under controlled, randomized conditions, while controlling for confounding variables and using techniques like randomization and blinding?

Efficacy Signup and view all the answers

Which study design involves following a group of individuals over time to examine the occurrence of outcomes or events?

Cohort study Signup and view all the answers

Which type of study design is used to investigate the relationships between variables without manipulating them?

Correlational study Signup and view all the answers

What is the primary purpose of a cohort study?

To investigate the relationship between an exposure and an outcome by following a group of individuals over time. Signup and view all the answers

Which of the following is a characteristic of a cross-sectional study?

Data is collected at a single point in time to provide a snapshot of the population. Signup and view all the answers

What is the primary aim of a qualitative study?

To explore and gain an in-depth understanding of a phenomenon from the perspectives of participants. Signup and view all the answers

Which of the following is a characteristic of an exploratory study?

It examines the dimensions and relationships of a phenomenon without establishing causality. Signup and view all the answers

What is a key characteristic of a correlational study?

It investigates the relationship between two or more variables without implying causation. Signup and view all the answers

In the context of a case-control study, what is the primary focus?

Comparing the prevalence of exposures between individuals with and without the outcome of interest. Signup and view all the answers

Biostatistics and Epidemiology Quiz

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