先进复合终点分析的可行性:从预防中风的维生素干预随机对照试验中获得的后期见解
Ganesh Asaithambi1, Sandra Castro-Pearson2, Marie K Meyer1
1Allina Health Neuroscience, Spine, and Pain Institute, Minneapolis, MN, USA.
Nutrition, metabolism, and cardiovascular diseases : NMCD
|August 16, 2023
概括
权重复合终点 (WCE) 应用于中风预防维生素干预 (VISP) 试验. 这项分析证实了试验的负面结果,显示高剂量和低剂量复合维生素之间的中风预防没有显著差异.
科学领域:
- 心血管医学 心血管医学
- 临床试验方法论 临床试验方法论
- 营养科学 营养科学
背景情况:
- 卒中仍然是导致死亡和残疾的主要原因,需要有效的预防策略.
- 临床试验中的传统复合终点 (TCE) 可能会掩盖重要的结果变化.
- 权重复合终点 (WCE) 提供了一种精细的临床研究结果评估方法.
研究的目的:
- 调查WCE在先前负面的中风预防临床试验中的应用.
- 评估WCE在分析心血管健康营养干预措施中的实用性.
- 在评估中风预防维生素干预 (VISP) 试验结果时,将WCE与TCE进行比较.
主要方法:
- 对VISP试验数据的后期分析 (n=3668).
- 使用权重方法对时间到事件结果进行审查.
- 计算了修改的卡普兰-梅尔 (KM) 曲线,并对WCE和TCE进行了修改的日志等级测试.
主要成果:
- 使用TCE的高剂量和低剂量多维生素组之间没有观察到结果的显著差异.
- 用不同的结果权重进行的WCE分析也显示,干预组之间没有显著差异.
- 大多数参与者保持无事件,这表明试验中的整体事件率较低.
结论:
- 这项研究证实了VISP试验的负面结果.
- 展示了WCE在评估基于营养的中风预防干预措施中的可行性和应用.
- WCE分析没有改变对VISP试验负面结果的解释.
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