PROC PHREG DATA=XXX;
effect fibreS = spline(fibre / basis=tpf(noint) NATURALCUBIC details knotmethod=rangefractions(0.05 0.50 0.95) );
model survival*Censor(0)=fibreS / rl ;
run; Hi All, For a project, I want to perform restricted cubic splines since my prop. hazard analyses indicate the association between fibre and survival might not be linear. However, I am not really used working with SAS and I got stuck making my syntax. I think the part I have is alright, however, I do not seem to get any graphical output figures. Could someone help me with the last part? Thanks in advance!
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