topic Lifereg LL stat without covariates in Statistical Procedures

Lifereg LL stat without covariates

Sas_beg — Tue, 16 Aug 2016 05:47:36 GMT

I am new here. The proc lifereg used to produce a model fit statistic (loglikelihood) without any of the covariates along the usual one with covariates. This is useful to compute a likelihood ratio or a pseudo r-squares. It seems I cannot find this now with newer version of SAS/ETS. Is there a solution for this? I cannot run the model with no covariates as I do not know what missing observations to exclude to have a match between the two runs (with and without covariates). Thank you in advance for any help.

Re: Lifereg LL stat without covariates

Reeza — Tue, 16 Aug 2016 06:04:33 GMT

LIFEREG belongs under SAS/Stat not SAS/ETS.

What version of SAS/Stat do you have?

Re: Lifereg LL stat without covariates

Sas_beg — Tue, 16 Aug 2016 22:21:28 GMT

Thanks for the correction. I have SAS/Stat 12.3

Re: Lifereg LL stat without covariates

Reeza — Wed, 17 Aug 2016 00:38:02 GMT

So I checked a couple of different version of the documentation (your welcome) and I can't see a difference in the output. That doesn't mean there isn't one, just nothing related to Log Likelihood that I can find.

Can you post sample code (and ideally sample data) that you think should generate log likelihood and a reference to what version of SAS would produce this value.

You can use the data from the documentation as sample data if your data is confidential.