小样本大小集群试验对药物坚持的挑战:来自TAKE-IT-TOO的见解
Spencer W Riddell1,2, Robert Platt3,4, Mary Amanda Dew5,6,7,8
1Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA.
Pediatric transplantation
|December 22, 2025
概括
设计集群随机对照试验 (CRT) 对于儿科移植患者的药物坚持需要仔细规划. 在TAKE-IT-TOO试点研究中,探索了估计未来CRT样本大小需求的方法,发现重复措施提高了效率.
科学领域:
- 临床试验方法论 临床试验方法论
- 儿科脏病学 儿科脏病学
- 医疗保健服务研究 医疗服务研究
背景情况:
- 集群随机对照试验 (CRT) 对于评估涉及临床团队的干预措施至关重要.
- 由于集群内相关性和集群间变异性,CRT通常需要更大的样本大小.
- 准确的样本大小估计对于CRT的成功设计至关重要.
研究的目的:
- 估计用于设计全尺寸CRT的类内相关性 (ICC),以改善儿科移植患者的药物坚持.
- 评估不同方法对电子测量粘附数据的总结如何影响ICC估计和样本大小要求.
- 评估在CRT中使用重复坚持测量与单个总结测量的效率.
主要方法:
- 在TAKE-IT-TOO试点研究中,七个中心被随机分配到一个促进坚持或健康生活干预的中心.
- 使用电子药盒在4周的试用期和10周的干预期内跟踪药物坚持.
- 一般化线性混合模型 (GLMM) 用于计算方差估计和推导ICC值,比较两个依从数据总结方法.
主要成果:
- 与单个总结措施相比,在参与者中使用重复的坚持措施提高了统计能力.
- 精确估计ICC是具有挑战性的,因为在差异估计方面存在很大的标准错误.
- 确定了可信的ICC值范围和相应的样本大小要求,用于未来的试验.
结论:
- 该TAKE-IT-TOO研究强调了在小群体中进行CRT的挑战,特别是估计ICC.
- 重复的结果测量对于最大限度地提高儿科移植接受者坚持性研究的统计效率是有价值的.
- 这些发现为设计未来的大规模CRT提供了指导,用于在这个人群中进行药物坚持干预.
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