ATI RN
Descriptive Epidemiology Questions Questions
Question 1 of 5
Which of the following is a strategy to control for confounding in the design phase of a study?
Correct Answer: C
Rationale: Matching (C) controls confounding in design (e.g., age-matching in case-control). A and B are analysis methods, D reduces observer bias.
Question 2 of 5
Which of the following statements is true about a highly sensitive test?
Correct Answer: C
Rationale: High sensitivity (C) rules out disease (e.g., few false negatives, SnNout). A is specificity, B may occur, D contradicts high sensitivity.
Question 3 of 5
What is the primary disadvantage of using a highly specific test for screening purposes?
Correct Answer: A
Rationale: High specificity (A) may miss cases (low sensitivity) in screening. B is low specificity, C and D are not primary.
Question 4 of 5
How is 'mortality rate' defined?
Correct Answer: C
Rationale: Mortality rate (C) is deaths over time (e.g., 2/1000/year). A is incidence, B is prevalence, D is recovery.
Question 5 of 5
The 'Bradford Hill criteria' are used to:
Correct Answer: B
Rationale: Bradford Hill criteria (B) assess causality (e.g., smoking-lung cancer). A, C, and D are unrelated.