ATI RN
Epidemiology Question Bank Questions
Question 1 of 5
In a descriptive study, what type of data is typically collected?
Correct Answer: A
Rationale: Descriptive studies often collect qualitative data (A) to describe patterns (e.g., case reports), though quantitative (B) is also common. C and D are less typical.
Question 2 of 5
Which of the following is a responsibility of the Institutional Review Board (IRB)?
Correct Answer: C
Rationale: IRBs (C) review protocols for ethics (e.g., consent, safety). A, B, and D are not their roles.
Question 3 of 5
What is the impact of increasing the cutoff point of a diagnostic test on sensitivity and specificity?
Correct Answer: D
Rationale: Raising the cutoff (D) makes the test stricter, increasing specificity (fewer false positives) but decreasing sensitivity (more false negatives). A, B, and C defy trade-off.
Question 4 of 5
Secondary prevention primarily aims to:
Correct Answer: B
Rationale: Secondary prevention (B) catches and treats early disease (e.g., mammograms). A is primary, C and D are tertiary.
Question 5 of 5
Which measure is used to estimate the risk of developing a disease in a population over a specific period?
Correct Answer: B
Rationale: Incidence rate (B) estimates risk of new cases (e.g., 5/1000/year). A is burden, C is deaths, D is severity.