ATI RN
Epidemiology Practice Questions Questions
Question 1 of 5
What is the main difference between an epidemic and a pandemic?
Correct Answer: A
Rationale: Epidemic (regional) vs. pandemic (global) differs by geographic spread (A) (e.g., flu vs. COVID-19). B, C, and D vary but aren’t defining.
Question 2 of 5
What is the primary limitation of a case-control study?
Correct Answer: C
Rationale: Case-control studies (C) rely on memory, risking recall bias (e.g., cases recalling exposures differently). A, B, and D are less primary.
Question 3 of 5
What is the main limitation of descriptive studies?
Correct Answer: A
Rationale: Descriptive studies (A) describe patterns but can’t prove causation (e.g., mapping cholera). B, C, and D may occur but aren’t primary.
Question 4 of 5
Which type of study design is best suited for studying the natural history of a disease?
Correct Answer: C
Rationale: Cohort studies (C) follow disease progression (e.g., HIV). A is snapshot, B is retrospective, D is interventional.
Question 5 of 5
Which of the following can lead to information bias?
Correct Answer: A
Rationale: Information bias (A) includes misclassification (e.g., wrong exposure data). B and C are selection biases, D is confounding.