ATI RN
Epidemiology Practice Questions Questions
Question 1 of 5
Which type of study design is best suited for studying the natural history of a disease?
Correct Answer: C
Rationale: Cohort studies (C) follow disease progression (e.g., HIV). A is snapshot, B is retrospective, D is interventional.
Question 2 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 3 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 4 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.
Question 5 of 5
What is the 'age-specific mortality rate'?
Correct Answer: B
Rationale: Age-specific mortality (B) is deaths in an age group (e.g., 65+ deaths). A is incidence, C is denominator, D is recovery.