ATI RN
Epidemiology Question Bank Questions
Question 1 of 5
The psychosis most likely to occur in young adults (ages 15 to 24) is
Correct Answer: A
Rationale: Schizophrenia peaks in late teens/early 20s.
Question 2 of 5
John Snow's investigation of cholera is considered a model for epidemiologic field investigations because it included a: (Choose one wrong answer)
Correct Answer: C
Rationale: Snow’s cholera study used a hypothesis (waterborne transmission), compared pump users to non-users, and mapped cases. Multivariate models were not part of his 19th-century approach.
Question 3 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 4 of 5
The measure of spread most affected by one extreme value is the:
Correct Answer: B
Rationale: The range (max - min) changes directly with an extreme value, unlike IQR or standard deviation.
Question 5 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.