True statements about occupational skin disease in

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Question 1 of 5

True statements about occupational skin disease include which of the following?

A. Most cases of contact dermatitis are mediated by an allergic reaction B. Allergic contact dermatitis rarely recurs upon reexposure C. Chloracne is usually caused by exposure to chlorine gas or hydrochloric acid D. A diagnostic feature of chloracne is the presence of yellowish cysts early in the disease

Correct Answer: D

Rationale: Chloracne (dioxins) shows cysts; A (irritant more common), B (recurs), C (false) wrong.

Question 2 of 5

Parents who abuse their children are correctly characterized by all the following statements EXCEPT

A. they are more likely to be alcoholics than are nonabusive parents B. they are found in all social classes C. they are more likely to have been abused as children than are nonabusive parents D. they are more likely to be men than women

Correct Answer: D

Rationale: Mothers abuse more often; others true.

Question 3 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 4 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 5 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.

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True statements about occupational skin disease include which of the following?

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