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在RERF队列研究中的综合终点分析中使用联合模型
Richard Sposto1, Harry M Cullings2
1Department of Statistics, Radiation Effects Research Foundation, 5-2 Hijiyama Park, Minami Ku, Hiroshima City, 732-0815, Japan.
Radiation research
|February 13, 2024
概括
在队列研究中使用聚合终点进行辐射风险估计,无论是使用标准波桑回归还是使用单一代孕器官剂量的联合分析,都会产生类似的结果. 在联合分析中,器官特定的剂量可能会带来偏差,需要对总体终点进行仔细解释.
科学领域:
- 辐射流行病学 辐射流行病学
- 生物统计学 生物统计学
- 癌症研究 癌症研究
背景情况:
- 辐射风险估计通常使用聚合终点Poisson回归.
- 目前的方法需要替代器官剂量,这可能对不同的终点有问题.
- 总结的终点结合了各种器官特定事件,需要强大的分析方法.
研究的目的:
- 将标准总结终点分析的推断与联合分析方法进行比较.
- 为了评估使用代孕对器官特定辐射剂量的影响.
- 解决聚合终点辐射风险估计中的潜在偏差.
主要方法:
- 利用最大概率理论来比较分析方法.
- 进行了辐射效应研究基金会 (RERF) 生命周期研究的所有癌症死亡率数据的重新分析.
- 在联合分析框架内研究了单个代理器官剂量与器官特定剂量的使用.
主要成果:
- 标准的聚合终点分析和用单个替代剂量进行的联合分析,对辐射剂量反应,背景和效果修改产生了几乎相同的推断.
- 在联合分析中使用器官特异剂量可以在拦截参数中引入偏差,特别是当包括性别特异结果并且剂量估计没有性别定义时.
- 一个简单的校正可以减轻偏差,当使用器官特定剂量与性别特定的结果.
结论:
- 对于总结的终点,用单一替代剂量进行联合分析是估计辐射风险的适当和有效方法.
- 用特定器官剂量进行联合分析,对于总结的终点可能只有在对终点进行单独分析以估计剂量反应时才可解释.
- 关于剂量反应的推断仍然很复杂,需要对总和器官特异性分析进行仔细考虑.
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