对复合生存终点的活期回归分析
Xi Fang1,2, Hajime Uno3, Fan Li1,2
1Department of Biostatistics, Yale School of Public Health, 60 College St, New Haven, CT 06510, United States.
Biostatistics (Oxford, England)
|December 24, 2025
概括
这项研究引入了一种新的回归框架,用于分析复合生存结果,特别是当终端事件存在时. 该方法通过对临床试验数据的活体测量模型时间变化的关联来增强统计能力.
科学领域:
- 生物统计学 生物统计学
- 临床试验 临床试验
- 生存分析的分析.
背景情况:
- 复合终点在临床试验中很常见,以增加事件率和统计能力.
- 活着时累积频率测量是复合生存结果与终端事件的一个有价值的工具,将平均事件率与生存时间联系起来.
- 现有的非参数方法对两个样本进行比较是有限的,缺乏回归方法,用于活体测量的时间变化效应.
研究的目的:
- 开发一种新的回归框架,用于复合生存结果中的暴露权重活体测量,特别是解决终端组件事件.
- 为所有组件事件建模共变量之间的时间变化的关联以及所有组件事件的概括的活着损失率.
- 提供一种适用于独立数据和集群数据的方法.
主要方法:
- 开发了一个回归框架,使用分线来建模时间变化的关联.
- 对于独立数据和集群相关数据的回归估计器的衍生异面性质.
- 通过模拟和应用两项随机临床试验数据验证了该方法.
主要成果:
- 拟议的回归框架有效地模拟了与终端事件复合生存结果的活期措施中的时间变化的关联.
- 该方法在独立和集群数据设置中都显示出强大的性能,模拟证实了这一点.
- 回归方法已成功应用于分析来自两个临床试验的数据,显示其实际效用.
结论:
- 开发的回归框架提供了一个强大的工具来分析复合生存结果与终端事件使用活着的措施.
- 这种方法解决了回归方法对这些结果的时间变化的影响的差距,增强了临床试验中的统计分析.
- 在 WAreg R 包中的实施有助于研究人员应用这些先进的统计方法.
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