ATI RN
Epidemiology NCLEX Questions Questions
Question 1 of 5
What is the primary way to control for confounding in the analysis phase of a study?
Correct Answer: A
Rationale: Stratification (A) controls confounding in analysis by grouping (e.g., by age). B and C are design, D is bias reduction.
Question 2 of 5
What does the area under the ROC curve (AUC) represent?
Correct Answer: A
Rationale: AUC (A) measures test accuracy (e.g., 0.9 = high discrimination). B, C, and D are unrelated.
Question 3 of 5
Which level of prevention is associated with health promotion activities?
Correct Answer: A
Rationale: Primary prevention (A) promotes health to prevent disease (e.g., exercise campaigns). B, C, and D focus post-onset.
Question 4 of 5
How is 'attack rate' defined in the context of an outbreak?
Correct Answer: C
Rationale: Attack rate (C) is illness among exposed (e.g., 20% in food poisoning). A is prevalence, B is CFR, D is incidence.
Question 5 of 5
Which of the following statements about aortic dissection is true?
Correct Answer: B
Rationale: Aortic dissection is a leading cause of death in Marfan's syndrome due to connective tissue defects. A is false (cholesterol isn’t a primary risk factor). C is incorrect (Gaucher's isn’t linked). D varies (10-20% is typical, not fixed at 10%). E is false (severe pain is usual).