我在stcox回归后，使用stcoxgof，出现如下问题，请问该如何 save martingale residuals？？如何 specified on the stcox ？？
谢谢老师！
. stcoxgof
stcox did not save martingale residuals.
mgale(newvars) option must have been specified on the stcox command
prior to using this command
r(198);
. stcoxgof
Martingale residuals must be saved in stcox to compute the added variable version
of the Gronnesby and Borgan test or Arjas like plots.
r(198);
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