Displaying 1 result from an estimated 1 matches for "rstime2".
2011 Mar 07
0
survest() for cph() in Design package
...rstime: risk set age
rsentry: fake entry time, just before rstime
setno: risk set identifier
cc: lung cancer death (0/1)
cr500: independent variable 1 (0/1), cumulative radon > 500WLM
smoke25: independent variable 2 (0/1), 1/2+ pack/dat at age 25
logw: weight to be used as an offset in the model
rstime2: indicator variable to indicate whether age is below 50, 50-69 or >=70,
used as strata in the model
The SAS code is (if this helps to address my question/problem)
proc phreg data=uminers;
model rstime*cc(0)=cr500 smoke25/ entry=rsentry offset=logw rl;
baseline out=ch covariates=covs cumhaz=...