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HESI LPN · HESI LPN Community Health Nursing · HESI Epidemiology Test Questions and Answers PDF

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

What are focus areas of nutritional epidemiology?

A. The role of nutritional factors in causing disease in a population.

B. How changes in food intake in the population can promote good health.

C. Both of the options given are correct.

D. None of the options given is correct.

Correct Answer: Both of the options given are correct.

Question 2 of 5

What type of study design is most suitable for establishing a cause-and-effect relationship?

A. Cross-sectional study

B. Cohort study

C. Case-control study

D. Randomized controlled trial

Correct Answer: Randomized controlled trial

Question 3 of 5

What is a risk factor?

A. A cause of disease

B. A protective factor

C. A characteristic that increases the likelihood of developing a disease

D. A treatment for disease

Correct Answer: A characteristic that increases the likelihood of developing a disease

Question 4 of 5

What is the etiologic fraction of disease due to smoking among individuals with coronary thrombosis?

A. 0.2

B. 0.3

C. 0.4

D. 0.5

Correct Answer: 0.3

Question 5 of 5

Compare ecologic, cross-sectional, and case-control studies with respect to their strengths and weaknesses, and advantages and disadvantages.

A. Ecologic studies provide quick insights but are prone to the ecologic fallacy.

B. Cross-sectional studies capture data at one point in time but cannot establish temporality.

C. Case-control studies are efficient for rare diseases but prone to recall bias.

D. Experimental studies are not mentioned here.

Correct Answer: Ecologic studies provide quick insights but are prone to the ecologic fallacy.

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