Factors that are more characteristic of childhoodo

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Descriptive Epidemiology Questions Questions

Question 1 of 5

Factors that are more characteristic of childhood-onset asthma than adult-onset asthma include

A. a 2:1 ratio of females to males B. an association with a history of eczema C. normal levels of IgE in the serum D. lack of response to provocation with inhaled antigens

Correct Answer: B

Rationale: Childhood asthma is atopic (eczema, high IgE—B true, C false). A is false (male predominance). D and E are false (responsive, seasonal).

Question 2 of 5

Which of the following statements about valvular heart disease is true?

A. Coronary artery disease is the most common cause of aortic stenosis in the U.S. B. The incidence of rheumatic heart disease in the U.S. has been rising for the past 10 years C. Most persons with a history of rheumatic fever are immune to recurrences during group A streptococcal epidemics D. Most cases of mitral valve prolapse are asymptomatic

Correct Answer: D

Rationale: MVP is often asymptomatic; A (calcification), B (declining), C (false) incorrect.

Question 3 of 5

Compared with the general population, all the following patients are at an increased risk of folate deficiency EXCEPT

A. a 20-year-old man with sickle cell anemia B. a 20-year-old woman who is a strict vegetarian C. a 60-year-old man on hemodialysis D. a 70-year-old woman who drinks a quart of vodka each day

Correct Answer: B

Rationale: Vegetarians get folate from plants; others at risk (hemolysis, malabsorption, alcohol).

Question 4 of 5

The incidence of skin cancer

A. is unaffected by environmental factors B. increases with age C. is higher in alcoholics D. is higher in persons who live far from the equator

Correct Answer: B

Rationale: Age increases risk; A (UV key), C (not direct), D (near equator higher), E (men higher) false.

Question 5 of 5

Exposure of nonsmokers to secondhand cigarette smoke may result in all the following EXCEPT

A. increased incidence of osteoarthritis B. elevation of blood concentration of carbon monoxide C. increased incidence of lower respiratory tract infections during the first year of life D. eye irritation, headache, nasal congestion, cough

Correct Answer: A

Rationale: OA isn’t linked to secondhand smoke; others are.

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Factors that are more characteristic of childhood-onset asthma than adult-onset asthma include

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Descriptive Epidemiology Questions Questions

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