如题,做AFT
生存分析需要画图时,在操作框中填写了相关信息:失效变量,变量,按组生成,最后得出的结果是:
stset date, id(id) failure(_Idate_13==0) scale(1)
id: id
failure event: _Idate_13 == 0
obs. time interval: (date[_n-1], date]
exit on or before: failure
------------------------------------------------------------------------------
114,715 total observations
39 observations end on or before enter()
83,289 observations begin on or after (first) failure
------------------------------------------------------------------------------
31,387 observations remaining, representing
31,387 subjects
31,387 failures in single-failure-per-subject data
104,570 total analysis time at risk and under observation
at risk from t = 0
earliest observed entry t = 0
last observed exit t = 12
. sts graph, by(dplay) separate plotopts(recast(line))
failure _d: _Idate_13 == 0
analysis time _t: date
id: id
但是没有生成图片,非常奇怪。有朋友知道是为什么吗?是因为数据量太大了吗?