生存及cox比例风险模型讲解.ppt

生存分析 ;生存分析的主要内容;生存分析需具备的资料;肾移植例;手术方式;生存资料的定义(1);生存资料的定义(2);stset time,failure(outcome);生存资料的描述;. stci,by(treat) failure _d: outcome analysis time _t: time | no. of treat | subjects 50% Std. Err. [95% Conf. Interval] -------+------------------------------------------------------------- 1 | 19 64 46.8995 20 450 2 | 14 . . 225 . -------+------------------------------------------------------------- total | 33 365 143.4001 64 .;. stci,rmean by(treat) failure _d: outcome analysis time _t: time | no. of restricted treat | subjects mean Std. Err. [95% Conf. Interval] -------+------------------------------------------------------------- 1 | 19 297.0329(*) 83.96867 132.457 461.60 2 | 14 766.4481(*) 116.2397 538.622 994.274 -------+------------------------------------------------------------- total | 33 512.9716(*) 83.84662 348.635 677.308 (*)largest observed analysis time is censored, mean is underestimated.;生存率的估计;. sts list,by(treat) failure _d: outcome analysis time _t: time Beg. Net Survivor Std. Time Total Fail Lost Function Error [95% Conf. Int.] ------------------------------------------------------------------------------- treat=1 3 19 1 0 0.9474 0.0512 0.6812 0.9924 …... 680 3 0 1 0.2368 0.1015 0.0758 0.4475 900 2 0 2 0.2368 0.1015 0.0758 0.4475 treat=2 10 14 1