ATI RN
Epidemiology Practice Questions Questions
Question 1 of 5
What is the main advantage of a prospective cohort study?
Correct Answer: B
Rationale: Prospective cohorts (B) track incidence and establish temporality (e.g., smoking before cancer). A, C, and D are false; they’re costly, long, and prone to loss.
Question 2 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 3 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 4 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 5 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.