topic Problem Description: PHREG procedure in Statistical Procedures

Problem Description: PHREG procedure

raffa1966 — Wed, 03 May 2017 16:31:53 GMT

Problem Description:

data rischio; set raffy; proc phreg data=rischio COVS(aggregate) COVM namelen=22;

class centrocut(ref='0') cd4cut(ref='A') emocut(ref='A');

model follKM*statusKM(0)= centrocut emocut cd4cut cd4cut*emocut/risklimits;

id centrocut;

hazardratio 'cd4cut' cd4cut / diff=ref;

hazardratio 'emocut' emocut / diff=ref; run;

I can not see the main effects of cd4cut and emocut. I get results only for the interactive effect.

How can I get the HR for both the main effects and the interactive effect?

Thank you,

ballardw — Wed, 03 May 2017 21:03:56 GMT

From the documentation:

RISKLIMITS<=keyword> RL<=keyword>

produces confidence intervals for hazard ratios of main effects not involved in interactions or nestings

raffa1966 — Thu, 04 May 2017 16:16:32 GMT

Thank you.

I know that.

For these reason I'm using HazardRatio.

However with HazardRatio I get the HR only for interacation effect and not for main effects .

can you help me?

raffa1966 — Fri, 05 May 2017 17:43:11 GMT

Hi Ballardw,

can you help me?