Comparative assessment of trial-level surrogacy measures for candidate time-to-event surrogate endpoints in clinical trials. - Qian Shi; Lindsay A. Renfro; Brian M. Bot; Tomasz Burzykowski; Marc Buyse; Daniel J. Sargent (Comput. Stat. Data Anal., 2011)

Center-within-trial versus trial-level evaluation of surrogate endpoints. - Lindsay A. Renfro; Qian Shi; Yuan Xue; Junlong Li; Hongwei Shang; Daniel J. Sargent (Comput. Stat. Data Anal., 2014)