第十四章 生存析的Stata实现

9,90,93,104,110,134,137,160+,169,171,173,175,184,201,222,235+,247+,260+,284+,290+,291+,302+,304+,341+,345+。要比较3期淋巴瘤患者和4期淋巴瘤患者的生存率是否有差异。Stata数据格式为:timedgroup611191132114211421143019411126011690120711211012270125311255012700131001316013350134601412612101211121112111213121712201220122112221224122412291230123012311233123412351239124012410243024512461250125612610261026312681282128512881289129012931210412110121341213712160021691217112173121751218412201122221223502247022600228402290022910230202304023410234502Stata命令为:stsettime,failure(d=1)ststestgroupstsgraph,by(group)结果:Log-ranktestforequalityofsurvivorfunctions|EventsEventsgroup|observedexpected------+-------------------------1|816.692|4637.31------+-------------------------Total|5454.00chi2(1)=6.71Pr>chi2=0.0096P=0.0096,3期淋巴瘤患者和4期淋巴瘤患者的生存率有差别。