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3 November, 02:06

A cohort study was conducted to examine cigarette smoking and the risk of oral cancer. The investigators selected exposed and unexposed subjects so that they had the exactly same distribution of race. This method to address confounding by race is called:

a. Restriction

b. Stratification

c. Matching

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Answers (2)
  1. 3 November, 02:22
    0
    Option C

    Explanation:

    This is an example of matching because the exposed/unexposed groups are matched on a possible confounder (race).
  2. 3 November, 02:28
    0
    c. Matching

    Explanation:

    This method used to address confounding by race is matching. In this study the exposed and unexposed group are match on a confounder which is race. Matching is a statistical method that involves finding units that are similar and closest in terms of observable characteristics and matching them together, it involves comparing the treated and untreated units based on similar characteristics.
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