In a study of the death rates of smokers and nonsmokers in three countries, it is found that the nonsmokers have higher death rates than the smokers. What technique could be used to address difficulties with the sampling units that produced this unusual result?
A) There is no technique available to address it
B) subclassification on propensity scores
C) time series design
D) lagged correlations

Question

Quizplus · Accepted Answer

Subclassification on propensity scores is a technique used in observational studies to adjust for confounding variables that may affect the outcome. In this case, it could help account for differences between the smokers and nonsmokers, such as age or socioeconomic status, and provide a more accurate comparison of death rates. Options A, C, and D are not applicable or appropriate in this situation.

In a Study of the Death Rates of Smokers and Nonsmokers