A cohort study was conducted to examine cigarette smoking and the risk of oral c

Question

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 exactly the same distribution of race. This method to address confounding by race is called: (2 points) i. Restriction ii. Stratification iii. Matching iv. Multivariate analysis v. None of the above 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 exactly the same distribution of race. This method to address confounding by race is called: (2 points) i. Restriction ii. Stratification iii. Matching iv. Multivariate analysis v. None of the above 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 exactly the same distribution of race. This method to address confounding by race is called: (2 points) i. Restriction ii. Stratification iii. Matching iv. Multivariate analysis v. None of the above

Explanation / Answer

This is an example of matching because the exposed/unexposed groups are matched on a possible confounder (race).

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