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使用贝叶斯试验前模拟来优化儿童性综合征适应性临床试验的设计

Cal H Robinson¹, Rulan S Parekh², Brian Cuthbertson³

¹Division of Nephrology, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Paediatrics, The University of Toronto, Toronto, Ontario, Canada; Child Health Evaluative Sciences, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada.

Contemporary clinical trials

|April 17, 2025

概括

贝叶斯适应性试验优化了儿科罕见疾病研究. 模拟显示,这种方法显著减少了儿童综合征研究的样本大小,使得临床试验更加可行.

科学领域:

临床试验设计临床试验设计
儿科脏病学儿科脏病学
贝叶斯统计学贝叶斯统计学

背景情况:

随机对照试验 (RCT) 在罕见儿科疾病中面临可行性挑战.
适应性试验设计提供了更高的效率,并保持了科学有效性.
儿童性综合征是一种罕见的儿科疾病,需要优化试验方法.

研究的目的:

确定贝叶斯适应性随机对照试验 (RCT) 在儿童综合征的最佳设计.
通过模拟来提高试验效率和减少样本大小要求.

主要方法:

模拟了540万个贝叶斯适应性RCT,评估了各种设计参数 (停止值,徒劳率,招聘率,中间分析).
评估操作特征,包括功率,1型错误率和平均样本大小.
在各种条件下测试了最佳设计 (不同的治疗效果,招募率,先前分配).

主要成果:

确定了一个最佳的贝叶斯适应性设计,样本平均大小低,试验不确定的概率最小.
最佳设计实现了1%以下的1型错误率.
与频率的RCT相比,贝叶斯适应性设计具有信息性的先前减少了71%的样本大小 (n=198与n=682).

结论:

贝叶斯试验模拟有效优化了适应性RCT设计,用于儿童综合征.
这种方法显著降低了估计的样本大小,解决了儿科罕见疾病研究的关键障碍.
适应性设计提高了在罕见的儿科疾病中进行严格的临床试验的可行性.

关键词:

适应性临床试验适应性临床试验贝叶斯语贝叶斯语贝叶斯语贝叶斯语孩子孩子孩子孩子孩子孩子脏病综合征 - 脏病综合征儿科儿科儿科试验模拟的试验模拟.

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