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Peter Lorre in Mad Love

vyrdolak in statisticians

Kaplan Meier Curves in SAS

Is there a way to plot the unadjusted survival in a Kaplan Meier curve, as opposed to the survival estimate from the regression? (I am using Proc LIFETEST) This differs noticeably from the actual survival reported in a table and a reviewer has dinged us on it.

Shoudl I use the CDFPLOT statement in Proc CAPABILITY instead? (Assuming I have that installed, never heard of it before...)

Comments

you should try posting on the SAS website discussion board and see what people there respond. Also try checking out the survival packages in R and see how the results compare. btw, may be you should check for a programming error. it is suprising that there is a large difference.

But But But Programming Errors Always Show Up in Red Text in the Log

Thank you for the suggestions. I suppose it was a conceptual rather than programming error, I failed to include patients who survived to the end of data collection in the censored variable.
I wound up doing the graphs in Stata, pita but they look mahvelous!

November 2011

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