ATI RN
Questions on Epidemiology Questions
Question 1 of 5
In a screening program, what is the primary goal of using a highly sensitive test?
Correct Answer: B
Rationale: High sensitivity (B) catches all cases in screening (e.g., few false negatives). A is specificity, C is specificity, D is unrelated.
Question 2 of 5
What is the primary purpose of conducting a multivariate analysis in epidemiological studies?
Correct Answer: B
Rationale: Multivariate analysis (B) adjusts for confounders (e.g., regression). A is descriptive, C is a byproduct, D is cross-sectional.
Question 3 of 5
Giardiasis occurs on a worldwide basis and is associated with all the following EXCEPT
Correct Answer: D
Rationale: Giardia affects small intestine, not colonic mucosa (D false). A, B, C, and E are true.
Question 4 of 5
Studies of coronary artery bypass grafting have shown that all the following are true EXCEPT
Correct Answer: C
Rationale: Mortality is ~1-3%, higher with poor LV function; 1% is too specific.
Question 5 of 5
A characteristic demographic feature of rheumatoid arthritis is an incidence ratio of 1:3 that applies to
Correct Answer: A
Rationale: RA is 3x more common in women.