hello,
I would like to extract CI of (Bi+Rij) from zph output or output statment of PHREG.
Bi+ Rij represent Beta estimates weighted by standardized shoenfeld residuals.
Do you know option or the exact equation for calulating these CIs.
Thank you in advance,
cnetphil.
Welcome to the SAS community. Can you show us your code?
from example :
proc phreg data=Rats zph(out=zph);
model Days*Status(0)=Group;
output out=output ressch=ressch wtressch=wtressch xbeta=beta;
run;
the zph table gives (Bi+Rij) and days of cases.
the output table gives Bi and Rij so I can also caculate Bi+Rij by a simple addition.
But I cannot extract CI of (Bi+Rij) and I do not find the exact equation for calculating that.
Thanks in adavance,
centphil.
thanks for your response,
Could you specify the exact statment option for obtaining adequate output of CI for ( Bi+ RIj) extimates and not only Beta estimates for linear predicators?
Thanks in advance,
sincerely,
cnetphil
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