生物等效性
样本量测定
邦费罗尼校正
适应性设计
复制
计算机科学
I类和II类错误
统计
临床试验
计量经济学
医学
数学
药理学
病理
生物利用度
作者
Daeyoung Lim,Elena Rantou,Jessica Kim,Sungwoo Choi,Nam Hee Choi,Stella Grosser
摘要
Abstract In vitro permeation tests (IVPT) offer accurate and cost‐effective development pathways for locally acting drugs, such as topical dermatological products. For assessment of bioequivalence, the FDA draft guidance on generic acyclovir 5% cream introduces a new experimental design, namely the single‐dose, multiple‐replicate per treatment group design, as IVPT pivotal study design. We examine the statistical properties of its hypothesis testing method—namely the mixed scaled average bioequivalence (MSABE). Meanwhile, some adaptive design features in clinical trials can help researchers make a decision earlier with fewer subjects or boost power, saving resources, while controlling the impact on family‐wise error rate. Therefore, we incorporate MSABE in an adaptive design combining the group sequential design and sample size re‐estimation. Simulation studies are conducted to study the passing rates of the proposed methods—both within and outside the average bioequivalence limits. We further consider modifications to the adaptive designs applied for IVPT BE trials, such as Bonferroni's adjustment and conditional power function. Finally, a case study with real data demonstrates the advantages of such adaptive methods.
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