在非劣等性确认试验中分析了两个二项式比例
Hassan Lakkis1, Andrew Lakkis2
1Biostatistics, Intra-Cellular Therapies, Inc, New York, New York, USA.
Pharmaceutical statistics
|December 12, 2023
概括
大致精确得分 (AES) 测试为非劣势临床试验比较提供了优势,提供了准确的I型错误率和可靠的置信区间,即使在不平衡的组大小.
科学领域:
- 生物统计学 生物统计学
- 临床试验 临床试验
- 统计方法 统计方法
背景情况:
- 非劣等性比较在临床试验中至关重要.
- 现有的非对称方法可能会出现膨胀的I型错误,特别是在不平衡的样本大小的情况下.
- 在此之前,对于近似精确分数 (AES) 测试,缺乏置信区间.
研究的目的:
- 为AES测试提出并推导基于测试的可信度区间.
- 为了评估AES测试在非劣等性比较中的性能.
- 为了比较AES方法与现有的非对称和精确方法.
主要方法:
- AES测试使用精确的二项式概率,对麻烦参数进行限制的最大概率估计.
- 计算了I型错误,以评估AES方法的准确性.
- 经验性比较与流行的非对称和实际精确方法进行了实证比较.
主要成果:
- 与非对称方法相比,AES方法证明了I型错误的控制优于非对称方法,特别是在不平衡的样本大小.
- 与其他方法相比,AES方法的I型错误始终更接近名义水平.
- 基于AES测试的置信区间可以快速计算,通常在30秒以下.
结论:
- 在充足的临床试验中,AES测试及其相关的置信区间对于非劣等性比较是有利的.
- 与传统的非对称方法相比,AES方法提供了更好的准确性和可靠性.
- 快速计算时间和强有力的经验证据支持AES方法在统计实践中的实际实用性.
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