True statements about the epidemiology of cancer i

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Epidemiology Questions Questions

Question 1 of 5

True statements about the epidemiology of cancer in the U.S., excluding nonmelanoma skin cancers and cancer in situ, include all the following EXCEPT

A. about 1 million cases of cancer develop each year B. cancer is responsible for about 25 percent of deaths C. one in three Americans will develop cancer in his or her lifetime D. mortality from lung cancer has declined steadily since 1975

Correct Answer: D

Rationale: Lung cancer mortality rose until ~1990s, now declining in men but not steadily since 1975.

Question 2 of 5

International studies of cardiovascular disease have shown which of the following?

A. Death rates due to coronary artery disease vary by less than 25 percent from country to country B. The death rate due to coronary artery disease is higher in the U.S. than in any European country C. The death rate due to coronary artery disease is similar in the U.S. and Japan D. None of the above

Correct Answer: D

Rationale: Rates vary widely (e.g., Japan low, U.S. high); no single pattern fits.

Question 3 of 5

When describing the epidemiology of lung cancer in the U.S. in 1990, all the following statements are true EXCEPT

A. lung cancer is the leading cause of cancer death in men and women B. the 5-year survival rate from lung cancer is less than 20 percent C. more than 50 percent of patients have metastatic disease at the time of initial presentation D. the incidence of lung cancer in men is increasing

Correct Answer: D

Rationale: Men’s incidence peaked ~1980s, declining by 1990; women’s rising.

Question 4 of 5

Though much is still unknown about adult-onset diabetes mellitus, constitutional and environmental factors associated with an increased incidence of the disease include all the following EXCEPT

A. obesity B. age C. family history of diabetes D. occupation

Correct Answer: D

Rationale: Occupation isn’t a risk; others are.

Question 5 of 5

Which of the following substances is causally associated with pneumoconiosis?

A. Sulfur oxides B. Nitrogen oxides C. Oil fumes D. Dust particles

Correct Answer: D

Rationale: Dust (e.g., silica, coal) causes pneumoconiosis.

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True statements about the epidemiology of cancer in the U.S., excluding nonmelanoma skin cancers and cancer in situ, include all the following EXCEPT

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Epidemiology Questions Questions

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