We used propensity score analysis to adjust for potential differences in baseline characteristics of patients in the two treatment groups.

我们使用倾向评分分析，以调整两个治疗组中患者基线特征的潜在差异。

youdao

Objective Propose a method that combines the propensity score approach and non-parametric survival analysis for hazard ratio estimation in non-randomized medical researches.

目的提出一种适用于非随机化医学研究的，结合倾向指数与非参数生存分析估计风险比的方法。

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Even a regression with lots of controls, even propensity score analysis, is insufficient in this area of study.

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