PROC PHREG - 90 and 95% CI in a single proc

[DIZJ]

Hello, I need to compute the 90 and 95% CI for the hazard ratio estimate. In order to not perform the same computations twice, I was wondering if there is a way to specify more than one alpha level in the same proc phreg. The closest solution I found was to specify 2 hazardratio statements:

proc phreg data = test;
  class trt01p;
  model aval*cnsr(1) = trt01p / ties = exact;
  hazardratio trt01p / alpha=0.05;
  hazardratio trt01p / alpha=0.10;

  ods output HazardRatios =hr;
run;

The output dataset looks like this:

Description        HazardRatio      WaldLower      WaldUpper

trt A vs trt B       x                        y1                    y2

trt A vs trt B       x                        y3                    y4

The problem is that in the output dataset there is no variable to distinguish between which alpha it is used to compute each CI, as description is the same for each alpha.

Thank you in advance.

[FreelanceReinh · Accepted solution]

Hello @DIZJ and welcome to the SAS Support Communities!

If you specify a label in the HAZARDRATIO statement, then this will be included (in variable Label) in the output dataset as well.

Example:

hazardratio 'alpha=0.05' trt01p / alpha=0.05;
hazardratio 'alpha=0.10' trt01p / alpha=0.10;