目的评价由倾向指数方法得到的暴露效果的估计量和统计性质，并探讨其实用性。
Objective to evaluate the statistical property of the estimators on exposure effect and value of propensity score methods in practical use.
目的评价由倾向指数方法得到的暴露效果的估计量和统计性质，并探讨其实用性。
Objective to evaluate the statistical property of the estimators on exposure effect and value of propensity score methods in practical use.
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