ATI RN
Epidemiology Final Exams Questions and Answers Questions
Question 1 of 5
The incubation period is the time between:
Correct Answer: A
Rationale: Incubation period (A) is from exposure to symptom onset (e.g., measles: 10–14 days). B, C, and D describe other intervals.
Question 2 of 5
What is the term for a disease that occurs occasionally and at irregular intervals in a population?
Correct Answer: C
Rationale: Sporadic (C) is occasional, irregular occurrence (e.g., tetanus). A is constant, B is excess, D is global.
Question 3 of 5
Which type of study design is best suited for studying the prevalence of a disease?
Correct Answer: C
Rationale: Cross-sectional studies (C) measure prevalence at a point in time (e.g., hypertension rates). A and B focus on associations, D on interventions.
Question 4 of 5
Which of the following is a strength of cohort studies?
Correct Answer: B
Rationale: Cohort studies (B) track multiple outcomes (e.g., smoking and various diseases). A, C, and D are false; they’re costly, slow, and bias-prone.
Question 5 of 5
What is the main advantage of a case-control study?
Correct Answer: B
Rationale: Case-control studies (B) efficiently study rare diseases (e.g., cancer) by starting with cases. A, C, and D are false.