ATI RN
Epidemiology Exam Questions and Answers DOC Questions
Question 1 of 5
A test with high specificity is particularly useful for:
Correct Answer: B
Rationale: High specificity (B) confirms diagnosis (e.g., few false positives, SpPin). A needs sensitivity, C is sensitivity, D is broad.
Question 2 of 5
What does the term 'incidence' measure in epidemiology?
Correct Answer: B
Rationale: Incidence (B) measures new cases (e.g., 100/year). A is prevalence, C is mortality, D is prevalence.
Question 3 of 5
Which criterion is considered the most important for establishing causality?
Correct Answer: C
Rationale: Temporality (C) is essential; exposure must precede outcome (e.g., smoking before cancer). A, B, and D support but aren’t absolute.
Question 4 of 5
The bacteria that are involved in nosocomial (hospital-associated) infections are transmitted most often by
Correct Answer: D
Rationale: Hands are the primary vector (e.g., MRSA spread).
Question 5 of 5
All the following statements about coronary heart disease in the U.S. are true EXCEPT
Correct Answer: B
Rationale: CHD is not the top killer in 35-44 men (accidents higher); others true.