ATI RN
Epidemiology NCLEX Questions Questions
Question 1 of 5
Which of the following mental disorders has its highest incidence in the geriatric population?
Correct Answer: A
Rationale: Involutional depression peaks in elderly.
Question 2 of 5
British investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,294 children with pervasive development disorder (e.g., autism and Asperger's syndrome) and 4,469 children without such disorders. (They found no association.) This is an example of which type(s) of study? (Choose one wrong answer)
Correct Answer: C
Rationale: Comparing cases (disorder) to controls (no disorder) is observational (B) and case-control (D). Cohort (C) follows exposure over time, not applicable here.
Question 3 of 5
The measure of central location generally preferred for additional statistical analysis is the:
Correct Answer: A
Rationale: The mean is used in parametric statistical tests due to its mathematical properties.
Question 4 of 5
The units for the quantity you calculated in Question 8 could be expressed as:
Correct Answer: B
Rationale: Secondary attack rate, a risk measure, is expressed as a percentage of susceptibles affected.
Question 5 of 5
Which of the following shapes of a population pyramid is most consistent with a young population?
Correct Answer: C
Rationale: A broad base (triangle base down) indicates high birth rates, typical of a young population.