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Results tagged with sas
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user 154629
SAS is a statistical software package. Use this tag for any on-topic question that (a) involves SAS either as a critical part of the question or expected answer, & (b) is not just about how to use SAS.
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Survival analysis - time-dependent covariate with left truncation
I typically use R, but am using SAS here as you don't to convert the data to a counting process style. … *death_censor(0)=convert_tdc;
if convert_yrs>=death_time or convert_yrs=. then convert_tdc=0; else
convert_tdc=1;
run;
And here is what I understand to be the SAS code for left truncation. …
- 297
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Survival analysis with multiple time-dependent covariates
I initially fit a Cox model in SAS as such, adjusting for age at transplant and whether the recipient was white:
proc phreg data=bk;
class white(ref='N');
model dcgs_yrs*dcgs_censor(0)=age_at_tx …
- 297