ATI RN
Epidemiology Question Bank Questions
Question 1 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 2 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 3 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 4 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 5 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.