什么类型的集群随机试验适用于哪个环境?
Karla Hemming1, Andrew Copas2, Andrew Forbes3
1Institute of Applied Health Research, University of Birmingham, Birmingham, UK.
Journal of epidemiology and population health
|March 13, 2024
概括
集群随机试验 (CRT) 提供随机评估,当个人随机化是不可行的或风险污染. 本综述探讨了各种CRT设计,包括阶梯和并行,以指导最佳的研究规划.
科学领域:
- 流行病学 流行病学
- 临床试验方法论 临床试验方法论
- 生物统计学 生物统计学
背景情况:
- 集群随机试验 (CRT) 在个人随机化不切实际或在治疗组之间存在污染风险时至关重要.
- 有许多CRT变体,包括平行,交叉和梯形形设计,每个都有独特的后勤和统计考虑.
研究的目的:
- 提供不同集群随机试验设计的全面概述.
- 引导研究人员根据研究目标,统计效率和后勤约束来选择最合适的CRT设计.
主要方法:
- 该研究审查了各种集群随机试验设计,如平行,交叉,阶梯,批量阶梯和楼梯设计.
- 它讨论了在时间变化的设计中采样策略,包括队列采样和连续/横截面采样.
- 每个设计选择的优缺点都在统计效率,研究后勤和所需假设方面进行了评估.
主要成果:
- 不同的集群随机试验设计具有不同的优点和缺点.
- 在随时变化的设计中,在队列抽样和持续招聘之间做出选择会影响统计效率和后勤可行性.
- 设计选择的关键考虑因素包括统计能力,实施挑战以及基础假设的有效性.
结论:
- 选择最佳的集群随机试验设计需要仔细考虑统计,后勤和基于假设的因素.
- 了解不同CRT变异和采样方法之间的权衡对于成功执行研究和获得有效结果至关重要.
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