高维代因果森林 (hdiCF) 用于使用医疗保健索赔数据识别子组
Tiansheng Wang1, Virginia Pate1, Richard Wyss2
1Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC.
一个新的算法,hdiCF,使用索赔数据识别出具有不同治疗反应的患者子组. 这种方法通过发现异质治疗效应 (HTEs) 的重要特征来改进现有的机器学习.
科学领域:
- 医疗信息学 医疗信息学
- 机器学习 机器学习
- 现实世界的证据.
背景情况:
- 机器学习算法中预定义的共变量可能错过了准确识别子组的关键特征.
- 识别具有异质治疗效应 (HTEs) 的患者子组对于个性化医疗至关重要.
研究的目的:
- 开发和验证半自动分组算法hdiCF,以提高索赔数据中的特征识别.
- 通过使用hdiCF算法来确定住院心力衰竭发病率的HTEs患者子组.
主要方法:
- 该hdiCF算法使用医疗代码 (诊断,程序,处方) 和倾向评分方法的高维特征识别.
- 根据发生的频率创建特征,然后进行倾向得分修剪和准备.
- 代因果森林 (iCF) 已实施,以识别具有高高铁的子组.
主要成果:
- 在Medicare受益者中应用hdiCF,启动SGLT2i或GLP-1RA,确定了住院心力衰竭中HTEs的子组.
- 这些发现与现有研究一致,表明SGLT2i有利于患有先前心力衰竭或慢性病的患者.
- 该算法成功地识别了具有潜在HTEs标志物的子组,而没有先前的假设.
结论:
- 在现实世界的证据研究中,hdiCF算法提供了一种强大的方法来识别HTEs.
- 它克服了预定义的共变量的局限性,通过适应高维倾向得分方法来发现特征.
- hdiCF 增强了针对性治疗的患者子组的识别,特别是在潜在的未测量混的环境中.
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