Studies of the epidemiology of alcoholism have sho

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Question 1 of 5

Studies of the epidemiology of alcoholism have shown

A. that it is often associated with a family history of strict abstinence B. that there is only weak evidence for a genetic cause C. that the usual age of onset in men is about age 40, during the midlife crisis D. none of the above

Correct Answer: D

Rationale: A (family alcoholism), B (strong genetics), C (20s-30s), D (no peak) false.

Question 2 of 5

A specific case definition is one that: (Choose one wrong answer)

A. Is likely to include only (or mostly) true cases B. Is considered 'loose' or 'broad' C. Will include more cases than a sensitive case definition D. May exclude mild cases

Correct Answer: B

Rationale: A specific case definition aims for true positives (A) and may miss mild cases (D). 'Loose' or 'broad' (B) describes a sensitive definition, not a specific one.

Question 3 of 5

Disease control measures are generally directed at which of the following? (Choose one wrong answer)

A. Eliminating the reservoir B. Eliminating the vector C. Eliminating the host D. Interrupting mode of transmission

Correct Answer: C

Rationale: Control targets reservoirs (A), vectors (B), transmission (D), or susceptibility. Eliminating hosts (C) is impractical and not a standard measure.

Question 4 of 5

The algebraic relationship between the variance and standard deviation is that:

A. The standard deviation is the square root of the variance B. The variance is the square root of the standard deviation C. The standard deviation is the variance divided by the square root of n D. The variance is the standard deviation divided by the square root of n

Correct Answer: A

Rationale: The standard deviation is mathematically defined as the square root of the variance.

Question 5 of 5

The crude mortality rate in Community A was higher than the crude mortality rate in Community B, but the age-adjusted mortality rate was higher in Community B than in Community A. This indicates that:

A. Investigators made a calculation error B. No inferences can be made about the comparative age of the populations from these data C. The population of Community A is, on average, older than that of Community B D. The population of Community B is, on average, older than that of Community A

Correct Answer: C

Rationale: Age-adjustment corrects for age distribution; A’s higher crude rate and lower adjusted rate suggest an older population.

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Studies of the epidemiology of alcoholism have shown

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Questions in Epidemiology Questions

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