机译:A nested group sequential framework for regional evaluation in global drug development program
Merck & Co Inc, Merck Res Lab, Biostat & Res Decis Sci, Beijing, Peoples R China;
Fourth Mil Med Univ, Sch Prevent Med, Dept Hlth Stat, 169 Changle West Rd, Xian 710032, Shaanxi, Peoples R China;
Discounting factor; global drug development; MRCT; nested group sequential design; sample size estimation; virtual trial;