使用物件响应理论进行渐进性超核麻评分尺度版本的定量比较
Mohamed Gewily1, Elodie L Plan1, Elham Yousefi2
1Department of Pharmacy, Uppsala University, Uppsala, Sweden.
概括
一个由FDA验证的新的10项进步超核麻评分表 (PSPRS) 亚表,为评估治疗提供了更有效的工具. 这种尺度,结合项目响应理论,可以减少检测渐进性超核性麻 (PSP) 治疗效果所需的研究规模.
科学领域:
- 神经科学是一个神经科学.
- 临床评估 临床评估
- 生物统计学 生物统计学
背景情况:
- 渐进性超核性 (PSP) 是一种具有挑战性的神经退行性疾病,需要强有力的评估方法.
- 28项进步超核麻评分表 (PSPRS) 是标准的临床结果评估.
- 美国食品和药物管理局 (FDA) 提出的10项子规模提供了一个潜在的替代方案.
研究的目的:
- 通过物品响应理论,量化比较完整的PSPRS和FDA提出的10项子级的心理测量特性.
- 为PSP开发一种疾病进展模型.
- 评估不同研究设计和分析选项的效率,以检测治疗效应.
主要方法:
- 分析了来自四项干预试验和两个注册表的979名患者的数据.
- 项目响应理论 (IRT) 用于估计项目信息性和疾病进展.
- 进行了模拟,以比较不同尺度,试验设计和分析方法在检测治疗效果方面的功率.
主要成果:
- 完整的PSPRS表现出较低的项目相关性 (r=0.17±0.14),一些项目没有相关性.
- 美国食品和药物管理局选择的10项子量表显示了更高的相关性 (r=0.35±0.14) 并形成了纵向IRT进展模型的基础.
- 模拟表明,使用纵向项目信息,而不是治疗结束总分数,可以将检测疾病修饰效应所需的研究规模减半.
结论:
- 使用FDA选择的PSPRS项目进行纵向物品反应模型是评估PSP治疗的有希望的进步.
- 这种方法在临床试验中提高了进展性超核性麻的效率.
- 这些发现支持在PSP研究中使用FDA子尺度进行更有效和潜在的小规模临床试验.
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