ATI RN
Epidemiology NCLEX Questions Questions
Question 1 of 5
What is an epidemic curve?
Correct Answer: A
Rationale: An epidemic curve (A) plots cases over time to show outbreak patterns (e.g., point source). B, C, and D are unrelated.
Question 2 of 5
What type of bias is commonly associated with retrospective studies?
Correct Answer: C
Rationale: Recall bias (C) is common in retrospective studies (e.g., case-control) as memory distorts past exposures. A, B, and D occur but aren’t specific.
Question 3 of 5
Which type of study design is best suited for studying rare exposures?
Correct Answer: C
Rationale: Cohort studies (C) suit rare exposures (e.g., radiation) by following exposed groups. A and B focus on outcomes, D is impractical for rare exposures.
Question 4 of 5
Which type of study design involves collecting data on past exposures from individuals with and without a disease?
Correct Answer: B
Rationale: Case-control studies (B) retrospectively assess past exposures in cases vs. controls. A is snapshot, C is prospective, D is experimental.
Question 5 of 5
In an observational study, the researcher:
Correct Answer: C
Rationale: Observational studies (C) watch natural events (e.g., diet and disease). A, B, and D are experimental.