双臂交叉随机对照试验与N-of-1研究的元分析:比较确定干预效应的统计效率
Anna Eleonora Carrozzo1,2,3, Georg Zimmermann4,5,6, Arne C Bathke4
1Ludwig Boltzmann Institute for Digital Health and Prevention, Salzburg, Austria.
Biometrical journal. Biometrische Zeitschrift
|March 12, 2025
概括
通过对N-of-1试验进行元分析,其中个体作为自己的对照,可以检测与传统随机对照试验 (RCT) 相比,参与者较少的干预效应. 这种方法对于评估心血管保健中的数字健康干预措施是有效的.
科学领域:
- 医疗保健服务研究 医疗服务研究
- 生物统计学 生物统计学
- 数字健康数字健康
背景情况:
- N-of-1试验正在获得吸引力,以评估个人层面的干预有效性.
- 与传统的双臂随机对照试验 (RCT) 不同,N-of-1设计利用参与者作为他们自己的控制在多重交叉格式.
- 聚合N-of-1试验系列可以揭示人口层面的干预效应.
研究的目的:
- 调查N-of-1试验总结数据的元分析是否可以比传统的RCT更有效地检测统计学上显著的干预效应.
- 为了比较聚合的N-of-1试验与传统的RCT在心血管保健中的数字健康干预的参与者要求.
- 为了评估N-of-1试验的顺序聚合程序的性能.
主要方法:
- 进行了一项模拟研究,以比较不同分析方法的经验性质.
- 在零假设下评估的功率和不同主体之间的异质性.
- 评估了转移效应的影响和顺序聚合程序的性能.
主要成果:
- 对N-of-1试验的元分析表明,与传统RCT相比,与较少的参与者检测干预效应的潜力.
- 顺序聚合程序更早实现了80%的功率值,需要更少的参与者.
- 模拟结果提供了关于N-of-1试验元分析中的功率和异质性的见解.
结论:
- 对聚合的N-of-1试验的元分析提供了一种更有效的参与者方法,用于评估心血管保健中的数字健康干预措施.
- 对N-of-1试验的顺序聚合提高了统计能力,并减少了所需的参与者数量.
- N-of-1试验设计,当聚合时,为个性化和人口级干预评估提供了传统RCT的有价值的替代方案.
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