On the Conservativeness of Robust Variance Estimators in Propensity Score Weighted Cox Models
倾向得分加权 Cox 模型中稳健方差估计的保守性
In propensity score weighted analysis, robust variance that does not account for weight estimation is commonly used. In propensity score weighted Cox models (CoxPSW), the robust variance is known to be conservative when weights for the average treatment effect (ATE) are used, but it remains unclear whether this conservativeness also holds for other weighting schemes. This study evaluated the performance of the robust variance in CoxPSW when weights other than ATE are…