ATI RN
Epidemiology Exam Questions Questions
Question 1 of 5
Which study design is often used to investigate the cause of a rare disease?
Correct Answer: B
Rationale: Case-control studies (B) suit rare diseases (e.g., cancer) by starting with cases. A is better for common outcomes, C for prevalence, D for trials.
Question 2 of 5
What is the main strength of a cross-sectional study?
Correct Answer: C
Rationale: Cross-sectional studies (C) are quick and cost-effective (e.g., prevalence surveys). A, B, and D are false.
Question 3 of 5
What is the main advantage of a prospective cohort study?
Correct Answer: B
Rationale: Prospective cohorts (B) track incidence and temporality (e.g., exposure before disease). A, C, and D are false.
Question 4 of 5
What type of bias is introduced by differential recall of past exposures by cases and controls?
Correct Answer: C
Rationale: Recall bias (C) occurs when cases recall exposures differently than controls (e.g., cancer patients over-reporting). A is selection, B is broad, D is confounding.
Question 5 of 5
Which ethical principle is primarily concerned with protecting participants' privacy and confidentiality?
Correct Answer: B
Rationale: Autonomy (B) includes privacy and consent rights (e.g., confidentiality). A is fairness, C is benefit, D is harm avoidance.