更高效,更小的多种癌症查试验
Peter Sasieni1, Adam R Brentnall1
1Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom.
Journal of the National Cancer Institute
|October 14, 2024
概括
基于血液的癌症查试验的新分析方法,如预期效果和向分析,与传统方法相比,显著减少所需样本大小,提高效率.
科学领域:
- 生物统计学 生物统计学
- 临床试验设计 临床试验设计
- 癌症查 癌症查
背景情况:
- 在NHS-Galleri试验证明了选设计的可行性,其中只有干预臂样本进行测试.
- 这项研究评估了对试验的分析方法,在这些试验中,对照组的样本可能会被追溯测试.
研究的目的:
- 评估基于血液的癌症查试验不同分析方法的效率.
- 为了比较传统的,预期效果和目标分析方法.
主要方法:
- 传统 (所有事件),预期效果 (阳性测试) 和目标 (测试阳性事件) 分析的比较.
- 利用近似的统计方法和场景分析进行比较.
主要成果:
- 预期效果和目标分析需要比传统方法更小的样本大小来评估癌症特异性死亡率.
- 预期效果分析需要比目标分析更小的样本大小,特别是当阳性病例的癌症死亡风险高时.
结论:
- 预期效果或有针对性的分析可以大大减少血液癌症查试验的样本大小需求.
- 有针对性的分析将追溯测试和相关的通知问题降到最低.
- 试验人员在选择分析方法时,应平衡样本大小的减少与追溯测试成本.
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