Metals that have been associated with an increased incidence of lung cancer in occupationally exposed workers include

Questions 39

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Epidemiologic Question Questions

Question 1 of 5

Metals that have been associated with an increased incidence of lung cancer in occupationally exposed workers include

Correct Answer: C

Rationale: Chromium (hexavalent) is linked; others not.

Question 2 of 5

The mental disorders that appear to be more prevalent among males include

Correct Answer: A

Rationale: Men higher in substance abuse.

Question 3 of 5

Public health surveillance includes which of the following activities: (Choose one wrong answer)

Correct Answer: A

Rationale: Surveillance involves collecting case reports (B), graphing trends (C), and reporting data (D). Diagnosing individual cases (A) is a clinical activity, not surveillance.

Question 4 of 5

The epidemiologic triad of disease causation refers to: (Choose one best answer)

Correct Answer: A

Rationale: The triad—agent (cause), host (affected), environment (context)—explains disease causation. Other options are unrelated frameworks or people.

Question 5 of 5

The interquartile range covers what proportion of a distribution?

Correct Answer: B

Rationale: The IQR spans the middle 50% of the data, from Q1 to Q3.

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