Group-sequential logrank methods for trial designs using bivariate non-competing event-time outcomes.
Group-sequential logrank methods for trial designs using bivariate non-competing event-time outcomes.
复制标题
DOI:
10.1007/s10985-019-09470-4
复制
发表时间:
2020-04
影响因子:
1.3
通讯作者:
Halabi S
中科院分区:
文献类型:
--
作者:
Sugimoto T;Hamasaki T;Evans SR;Halabi S
We discuss the multivariate (2L-variate) correlation structure and the asymptotic distribution for the group-sequential weighted logrank statistics formulated when monitoring two correlated event-time outcomes in clinical trials. The asymptotic distribution and the variance-covariance for the 2L-variate weighted logrank statistic are derived as available in various group-sequential trial designs. These methods are used to determine a group-sequential testing procedure based on calendar times or information fractions. We apply the theoretical results to a group-sequential method for monitoring a clinical trial with early stopping for efficacy when the trial is designed to evaluate the joint effect on two correlated event-time outcomes. We illustrate the method with application to a clinical trial and describe how to calculate the required sample sizes and numbers of events.
登录
查看更多内容
影响因子:
1.8
作者:
Hamasaki T;Asakura K;Evans SR;Sugimoto T;Sozu T
通讯作者:
Sozu T
影响因子:
2
作者:
Asakura, Koko;Hamasaki, Toshimitsu;Sugimoto, Tomoyuki;Hayashi, Kenichi;Evans, Scott R.;Sozu, Takashi
通讯作者:
Sozu, Takashi
影响因子:
39.2
作者:
Lennox, Jeffrey L.;Landovitz, Raphael J.;Currier, Judith S.
通讯作者:
Currier, Judith S.
影响因子:
2.7
作者:
CLAYTON, DG
通讯作者:
CLAYTON, DG
影响因子:
1.9
作者:
LAN, KKG;LACHIN, JM
通讯作者:
LACHIN, JM