05-30-2017 01:27 PM - edited 05-30-2017 01:35 PM
I have run a PROC LIFEREG and have obtained a LR p-value comaring 2 strata. I would additionally like to compare my survival curves and get p-values at specific timepoints. How can I go about doing this?
Here is my code for the overall survival analysis:
proc lifetest data=dat maxtime=60 plots=survival(cl atrisk(maxlen=13 outside(0.15)) test);
strata group / test=logrank;
symbol1 v=none color=blue line=1;
symbol2 v=none color=red line=2;
label fu = "Follow-up, mo";
I would like to compare my curves at 24 and 36 months.
05-31-2017 12:20 PM
It may depend what you mean by "compare". Forgive the brevity and potentially tangential citation, but you may find:
Caution: Hazards Crossing! Using the Renyi Test Statistic in Survival Analysis