ATI RN
Epidemiology Practice Questions Questions
Question 1 of 5
What is the main limitation of descriptive studies?
Correct Answer: A
Rationale: Descriptive studies (A) describe patterns but can’t prove causation (e.g., mapping cholera). B, C, and D may occur but aren’t primary.
Question 2 of 5
Which of the following can lead to information bias?
Correct Answer: A
Rationale: Information bias (A) includes misclassification (e.g., wrong exposure data). B and C are selection biases, D is confounding.
Question 3 of 5
The concept of 'minimal risk' in research ethics means:
Correct Answer: C
Rationale: Minimal risk (C) aligns with daily life risks (e.g., routine tests). A is vague, B is absolute, D is beneficence.
Question 4 of 5
If a diagnostic test has a sensitivity of 90% and a specificity of 95%, what does this imply?
Correct Answer: B
Rationale: Sensitivity 90% and specificity 95% (B) mean 90% of diseased and 95% of non-diseased are correctly identified. A is true but incomplete, C and D are false (5% FPR, 10% FNR).
Question 5 of 5
What is an example of a primary prevention measure for cardiovascular disease?
Correct Answer: C
Rationale: Lifestyle modification (C) prevents CVD onset (primary). A is secondary, B and D are tertiary.