Asthma is characterized by which of the following?

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Epidemiology Exam Questions and Answers DOC Questions

Question 1 of 5

A. Age of onset before age 40 in about 95 percent of cases B. Persistently abnormal forced expiratory volume in 1 s (FEV1) C. Greater frequency in girls than boys D. Frequent family history of atopy

Correct Answer: D

Rationale: Atopy is common; A (not 95%), B (reversible), C (boys higher) false.

Question 2 of 5

Disorders of the prostate gland are a major cause of morbidity and mortality among elderly men. All the following statements about these disorders are true EXCEPT

A. by age 70, almost 30 percent of men have benign prostatic hypertrophy B. about 10 percent of men will eventually undergo surgery for benign prostatic hypertrophy C. prostate cancer is the third most common cause of cancer death among men in the U.S. D. prostate cancer is usually asymptomatic

Correct Answer: A

Rationale: BPH prevalence is ~50-70% by 70; others true.

Question 3 of 5

Among the following health care workers, the lowest prevalence of hepatitis B virus markers is found in

A. dialysis staff B. blood bank technicians C. staff of custodial institutions for the mentally retarded D. surgical house staff

Correct Answer: C

Rationale: Custodial staff have less exposure; others higher risk.

Question 4 of 5

Radiologic findings specific for exposure to asbestos include

A. bilateral pulmonary fibrosis B. pulmonary nodules C. pleural effusion D. diaphragmatic calcification

Correct Answer: D

Rationale: Diaphragmatic calcification is asbestos-specific.

Question 5 of 5

Epidemiologic studies of homosexuality have shown

A. that the prevalence of homosexuality in the U.S. has increased in the past 20 years B. that homosexuality is five times as common among men as among women C. that the overall prevalence of homosexuality in the U.S. is about 1 percent D. that there is an increased incidence of homosexuality among relatives of male homosexuals

Correct Answer: D

Rationale: Familial patterns noted; A (stable), B (similar rates), C (~3-5%) false.

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Asthma is characterized by which of the following?

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Epidemiology Exam Questions and Answers DOC Questions

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