ATI RN
Epidemiology Exam Questions and Answers DOC Questions
Question 1 of 5
Which group should be used to determine the community's pregnancy rate?
Correct Answer: D
Rationale: Although pregnancy is not specifically addressed, the text stresses that only those susceptible to a particular condition should be considered in the denominator. In the case of pregnancy, only women of childbearing age are susceptible.
Question 2 of 5
In a cohort study, the risk ratio of developing diabetes was 0.86 when comparing consumers of tea (the exposed) to those who did not drink tea (the unexposed). Which one statement is correct?
Correct Answer: A
Rationale: Risk ratio (RR) = 0.86 means the risk of diabetes in tea drinkers is 86% of that in non-drinkers, indicating a lower risk (A). B is false (RR > 1 would indicate higher risk). C is incorrect; RR alone suggests direction, though significance requires p-value or CI (not given). D is false; RR = 0.86 shows a difference, albeit modest, not 'no difference' (RR = 1).
Question 3 of 5
An outbreak of disease that occurs worldwide and affects a large number of people is called a:
Correct Answer: C
Rationale: A pandemic (C) is a global outbreak (e.g., 1918 flu). Endemic (A) is constant presence, epidemic (B) is regional excess, and cluster (D) is a localized group.
Question 4 of 5
Which term refers to the proportion of people who develop a disease among those who were exposed to the risk factor?
Correct Answer: C
Rationale: Relative risk (C) is the ratio of disease incidence in exposed vs. unexposed, reflecting risk among exposed. A is total cases, B is new cases, D is excess risk.
Question 5 of 5
Which of the following is a measure of disease frequency?
Correct Answer: A
Rationale: Incidence rate (A) measures new cases over time. B, C, and D are test performance metrics, not frequency.