ATI RN
Epidemiology Practice Questions Questions
Question 1 of 5
A cohort study differs from a case-control study in that: (Choose one wrong answer)
Correct Answer: B
Rationale: Cohort studies start with exposure (A), unlike case-control’s outcome focus. Both ask about exposure (B is wrong), and C and D are not universally true.
Question 2 of 5
What is the following fraction? Number of children <365 days of age who died in Country A in 2004 / Number of live births in Country A in 2004
Correct Answer: D
Rationale: This fraction is the infant mortality rate, a specific type of mortality rate.
Question 3 of 5
A frequency polygon differs from a line graph because a frequency polygon:
Correct Answer: A
Rationale: Frequency polygons represent distributions, while line graphs show trends over time.
Question 4 of 5
Data collected through which of the following methods is commonly used for surveillance? (Choose one wrong answer)
Correct Answer: B
Rationale: Vital records (A), notifications (C), and surveys (D) are surveillance staples. Trials (B) are for research, not routine surveillance.
Question 5 of 5
Initiating surveillance for a public health problem or adding a disease to the notifiable disease list is justified for which of the following reasons? (Choose one wrong answer)
Correct Answer: C
Rationale: High fatality (A), novelty (B), and program needs (D) justify surveillance. CDC recommendation (C) supports but isn’t a primary reason.