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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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.
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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.
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