ATI RN
130 Top Epidemiology Multiple Choice Questions and Answers PDF Questions
Question 1 of 5
What is the negative predictive value of a test?
Correct Answer: B
Rationale: NPV (B) is true negatives / (true negatives + false negatives), likelihood of no disease if negative. A is PPV, C and D are errors.
Question 2 of 5
What is 'prevalence' in epidemiology?
Correct Answer: B
Rationale: Prevalence (B) is total cases at a time (e.g., 5% diabetes). A is incidence, C is vague, D is mortality.
Question 3 of 5
Which type of study design is most appropriate for establishing a temporal relationship between exposure and outcome?
Correct Answer: C
Rationale: Cohort studies (C) establish temporality by following exposure to outcome (e.g., smoking then cancer). A is retrospective, B is simultaneous, D is group-level.
Question 4 of 5
The newborn with cytomegalovirus (CMV) infection at birth most commonly presents with
Correct Answer: D
Rationale: ~90% of congenital CMV cases are asymptomatic at birth. A-D occur in symptomatic minority.
Question 5 of 5
Which statement about obesity is correct?
Correct Answer: C
Rationale: Obese individuals are less active; A (OA increased), B (fat more calorie-dense), D (real link) are false.