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ATI RN · ATI Community Health · Epidemiology Multiple Choice Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which type of bias occurs when the selection of participants into a study is related to both the exposure and the outcome?

A. Selection bias

B. Information bias

C. Recall bias

D. Confounding

Expert Explanatory Rationale

Correct Answer: Selection bias

Question 2 of 5

Although the etiology of adult rheumatoid arthritis is not known, studies of its epidemiology have shown that

A. the incidence is 20 times higher in women than in men

B. progressive joint destruction occurs in less than 20 percent of cases

C. the vast majority of cases have their onset between the ages of 35 and 50

D. there is no genetic predisposition to the disease

Expert Explanatory Rationale

Correct Answer: the vast majority of cases have their onset between the ages of 35 and 50

Question 3 of 5

Which of the following statements about emphysema is true?

A. There is a definitive clinical diagnosis of the disease

B. Cigarette smokers are twice as likely to develop the disease as nonsmokers

C. Flow rates on pulmonary function tests resemble those seen in chronic bronchitis

D. It is equally prevalent in light and heavy smokers

Expert Explanatory Rationale

Correct Answer: Flow rates on pulmonary function tests resemble those seen in chronic bronchitis

Question 4 of 5

The Iowa Women's Health Study, in which researchers enrolled 41,837 women in 1986 and collected exposure and lifestyle information to assess the relationship between these factors and subsequent occurrence of cancer, is an example of which type(s) of study? (Choose one wrong answer)

A. Experimental

B. Observational

C. Cohort

D. Case-control

Expert Explanatory Rationale

Correct Answer: Experimental

Question 5 of 5

Chronic barbiturate abuse is particularly common among

A. unemployed teen-agers

B. college students

C. middle-aged women

D. elderly women

Expert Explanatory Rationale

Correct Answer: middle-aged women

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