I am having trouble understanding why the 'coxreg' option in proc power doesn't work for me. Everything I have read said to use that option to in order to determine the number of events needed, when I have an estimate for the HR and power that I want the study/analysis to have. Is it available anymore? If not, what other options are there in SAS to calculate this? I am using SAS 9.4 TRS Level 1M2. Windows Version 6.1. proc power;
coxreg;
run;
proc power;
onesamplefreq;
run; Obviously the code above is not complete, but in my program 'coxreg' from the first example is red (meaning it's not recognized, unlike the 'onesamplefreq' option below it).
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