ATI RN
130 Top Epidemiology Multiple Choice Questions and Answers PDF Questions
Question 1 of 5
Which of the following is NOT a type of epidemiological study?
Correct Answer: D
Rationale: Epidemiological studies include descriptive (A), observational (B), and interventional (C) types. Qualitative study (D) is a social science method, not typically epidemiological.
Question 2 of 5
The concept of 'excess mortality' refers to:
Correct Answer: A
Rationale: Excess mortality (A) is deaths above expected (e.g., during a pandemic). B, C, and D are broader or specific counts.
Question 3 of 5
What is the main purpose of a control group in a case-control study?
Correct Answer: A
Rationale: Controls (A) in case-control studies compare exposure in non-diseased to diseased. B is trials, C and D are cohort/cross-sectional aims.
Question 4 of 5
In a cohort study, the exposure status is determined:
Correct Answer: A
Rationale: Cohort studies (A) define exposure at baseline (e.g., smokers vs. non-smokers) then follow outcomes. B, C, and D misalign with design.
Question 5 of 5
What type of bias occurs when the measurement of exposure or outcome is influenced by the knowledge of the hypothesis?
Correct Answer: D
Rationale: Observer bias (D) occurs when hypothesis knowledge skews measurement (e.g., biased scoring). A is selection, B is broad, C is recall-specific.