The Asymptotic Joint Distribution of the Efficient Scores Test for the Proportional Hazards Model Calculated Over Time
研究了比例风险模型中在不同时间点计算的得分统计量，证明当个体随机进入研究时，该统计量渐近收敛到具有独立增量的多元正态过程。
The score statistic of the proportional hazards model calculated at different points in time is shown to converge asymptotically to a multivariate normal process with independent increments when individuals enter randomly throughout the course of the study.