ATI RN
Descriptive Epidemiology Questions Questions
Question 1 of 5
What is the purpose of a case definition in epidemiology?
Correct Answer: B
Rationale: Case definition (B) standardizes criteria for consistent disease identification (e.g., COVID-19 symptoms/tests). A, C, and D are unrelated.
Question 2 of 5
What is the main difference between a cohort study and a case-control study?
Correct Answer: B
Rationale: Cohort (prospective) follows exposure to outcome; case-control (retrospective) starts with outcome to exposure (B). A, C, and D aren’t primary differences.
Question 3 of 5
In a cross-sectional study, the data is collected:
Correct Answer: C
Rationale: Cross-sectional studies (C) collect data at one time (e.g., survey). A is cohort, B is case-control, D is longitudinal.
Question 4 of 5
What type of study design involves observing a population at a single point in time?
Correct Answer: C
Rationale: Cross-sectional studies (C) snapshot data at one time (e.g., surveys). A is retrospective, B is longitudinal, D is experimental.
Question 5 of 5
Which of the following is a strategy to control for confounding in the design phase of a study?
Correct Answer: C
Rationale: Matching (C) controls confounding in design (e.g., age-matching in case-control). A and B are analysis methods, D reduces observer bias.