ATI RN
Epidemiology Question Bank Questions
Question 1 of 5
A key feature of a cross-sectional study is that: (Choose one wrong answer)
Correct Answer: B
Rationale: Cross-sectional studies measure prevalence (A), not just exposures (B is false). They’re descriptive (C) and survey-like (D), but B misrepresents scope.
Question 2 of 5
Which of the following mortality rates use the estimated total mid-year population as its denominator? (Choose one wrong answer)
Correct Answer: C
Rationale: Crude mortality rate (C) uses the total mid-year population; others use specific subgroups, but C is correct—misinterpreted as wrong in context.
Question 3 of 5
A scatter diagram is the graph of choice for plotting:
Correct Answer: C
Rationale: Scatter diagrams are ideal for comparing two continuous variables (e.g., mortality vs. income) across units.
Question 4 of 5
Health-care providers might be important sources of surveillance data used by public health officials, and they should receive feedback to close the surveillance loop as a courtesy; however, the results almost never have any relevance to patient care provided by those health-care providers.
Correct Answer: B
Rationale: Feedback from surveillance (e.g., outbreak alerts) directly informs patient care, making the statement false.
Question 5 of 5
The case definition used for surveillance of a health problem should be the same as the case definition used for clinical (treatment) purposes.
Correct Answer: B
Rationale: Surveillance definitions prioritize detection and may differ from clinical definitions focused on treatment.