What is the main purpose of matching in a case-control study?

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Epidemiology Final Exams Questions and Answers Questions

Question 1 of 5

What is the main purpose of matching in a case-control study?

Correct Answer: C

Rationale: Matching (C) controls confounders (e.g., age) in case-control studies. A, B, and D are incorrect or unrelated.

Question 2 of 5

Which of the following best describes a false negative result?

Correct Answer: B

Rationale: False negative (B) is missing a diseased person (e.g., negative test despite cancer). A is false positive, C and D are correct results.

Question 3 of 5

Which of the following is an example of secondary prevention?

Correct Answer: B

Rationale: Secondary prevention (B) detects early disease (e.g., cancer screening). A and D are primary, C is tertiary.

Question 4 of 5

Which of the following is a measure of the burden of a disease in a population?

Correct Answer: B

Rationale: Prevalence (B) shows disease burden (e.g., total diabetes cases). A is onset, C is deaths, D is severity.

Question 5 of 5

What does the term 'effect modification' refer to?

Correct Answer: B

Rationale: Effect modification (B) changes association (e.g., age alters smoking-cancer risk). A, C, and D are distinct.

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