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HESI RN · HESI Community Health Nursing · Introduction to Epidemiology Case Study Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

This year 600 of 8000 young women age 17 to 20 years at a university health center tested positive for a sexually transmitted infection (STI). Which of the following terms best describes this data?

A. An epidemic

B. Incidence

C. Prevalence

D. Risk

Expert Explanatory Rationale

Correct Answer: Prevalence

Question 2 of 5

Which of the following types of study should the nurse researcher choose if the goal is to identify the long-term benefits and risks of a particular nursing intervention for senior citizens living in the community?

A. Cross-sectional study

B. Ecological study

C. Clinical trial

D. Retrospective analysis

Expert Explanatory Rationale

Correct Answer: Clinical trial

Question 3 of 5

Which factors make up the epidemiological triad?

A. Agent, host, environment

B. Person, place, time

C. Source, mode of transmission, host

D. Portal of entry, agent, portal of exit

Expert Explanatory Rationale

Correct Answer: Agent, host, environment

Question 4 of 5

Which of the following statistics is used by countries to compare the success of their health care systems?

A. Attack rate

B. Infant mortality rate

C. Proportionate mortality ratio

D. Cause-specific mortality rate

Expert Explanatory Rationale

Correct Answer: Infant mortality rate

Question 5 of 5

What type of study randomly assigns an individual to receive the currently available formulation of a blood pressure medication or the newly formulated slow-release formulation of the blood pressure medication?

A. Experimental

B. Observational

C. Case-control

D. Cohort

Expert Explanatory Rationale

Correct Answer: Experimental

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