Title | Statistical design of noninferiority multiple region clinical trials to assess global and consistent treatment effects. |
Publication Type | Journal Article |
Year of Publication | 2017 |
Authors | Diao, Guoqing, Donglin Zeng, Joseph G. Ibrahim, Alan Rong, Oliver Lee, Kathy Zhang, and Qingxia Chen |
Journal | J Biopharm Stat |
Volume | 27 |
Issue | 6 |
Pagination | 933-944 |
Date Published | 2017 |
ISSN | 1520-5711 |
Keywords | Drug Approval, Global Health, Humans, Models, Statistical, Multicenter Studies as Topic, Randomized Controlled Trials as Topic, Sample Size, Treatment Outcome |
Abstract | Noninferiority multiregional clinical trials (MRCTs) have recently received increasing attention in drug development. While a major goal in an MRCT is to estimate the global treatment effect, it is also important to assess the consistency of treatment effects across multiple regions. In this paper, we propose an intuitive definition of consistency of noninferior treatment effects across regions under the random-effects modeling framework. Specifically, we quantify the consistency of treatment effects by the percentage of regions that meet a predefined treatment margin. This new approach enables us to achieve both goals in one modeling framework. We propose to use a signed likelihood ratio test for testing the global treatment effect and the consistency of noninferior treatment effects. In addition, we provide guidelines for the allocation rule to achieve optimal power for testing consistency among multiple regions. Extensive simulation studies are conducted to examine the performance of the proposed methodology. An application to a real data example is provided. |
DOI | 10.1080/10543406.2017.1293075 |
Alternate Journal | J Biopharm Stat |
Original Publication | Statistical design of noninferiority multiple region clinical trials to assess global and consistent treatment effects. |
PubMed ID | 28296570 |
PubMed Central ID | PMC5787861 |
Grant List | P01 CA142538 / CA / NCI NIH HHS / United States R01 GM070335 / GM / NIGMS NIH HHS / United States |
Statistical design of noninferiority multiple region clinical trials to assess global and consistent treatment effects.
Project: