多个研究R-learner用于估计跨研究的异质治疗效应,使用统计机器学习
Cathy Shyr1, Boyu Ren2, Prasad Patil3
1Department of Biomedical Informatics, Vanderbilt University Medical Center, 2525 West End Avenue, Nashville, TN 37203, United States.
Biostatistics (Oxford, England)
|December 18, 2025
概括
估计异质治疗效应 (HTE) 对精准医学至关重要. 我们的多项研究R-learner框架有效地利用多项研究来改善HTE估计,特别是当治疗分配在研究之间有所不同时.
科学领域:
- 生物统计学 生物统计学
- 机器学习 机器学习
- 精准医学是一门精准的医学.
背景情况:
- 对个性化医学来说,对异质治疗效应 (HTE) 的估计至关重要.
- 现有的多项研究方法通常依赖于关于研究同质性的限制性假设.
- 当患者的共同变量概况在多项研究中重叠时,就会出现挑战.
研究的目的:
- 提出一个灵活的机器学习框架,多项研究的R-learner,用于使用多项研究的数据来估计HTE.
- 开发一种方法,明确考虑条件平均治疗效应 (CATE) 的异质性,研究中的潜在结果和治疗分配机制.
- 改进现有的多项研究方法,允许跨研究的信息借用.
主要方法:
- 开发了一个多学期R学习者框架,利用跨学期学习原则.
- 采用了数据适应性目标函数,以将干扰函数估计与研究特定的CATE整合起来.
- 利用会员概率来促进跨研究的信息共享.
- 将原来的R-learner扩展到多学习环境,允许整合各种机器学习技术.
主要成果:
- 拟议的多学习R学习者是异常正常的.
- 与标准R-learner相比,当治疗分配机制在研究之间有所不同时,已经证明了效率的提高.
- 展示了多项研究R-learner的良好表现,使用来自随机对照试验和观察性研究的癌症数据,特别是在研究间异质性下.
结论:
- 多个研究R-learner提供了一个灵活和强大的方法,在多个研究设置中对HTE估计.
- 该框架有效地处理了研究之间的异质性,从而使得更准确的个性化治疗效果估计.
- 这种方法可以更好地利用各种数据源来进行治疗决策,从而促进精准医学的发展.
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