topic Using sgplot for kaplan meier analysis in SAS Programming

Using sgplot for kaplan meier analysis

Anita_n — Tue, 14 Mar 2023 16:14:15 GMT

Dear all,
I have a question. Is it possible to create a kaplanmeier plot using sgplot without first using the life test procedure.
Attached is my sample file. T is the time to next treatment in days. And treatment is the therapy received. There is no censored patient that is why censor =0.

Re: Using sgplot for kaplan meier analysis

sbxkoenk — Tue, 14 Mar 2023 14:58:47 GMT

Survival plot with a twist using SGPLOT procedure
By Sanjay Matange on Graphically Speaking February 19, 2018
https://blogs.sas.com/content/graphicallyspeaking/2018/02/19/survival-plot-twist-using-sgplot-procedure/

Re: Using sgplot for kaplan meier analysis

Anita_n — Tue, 14 Mar 2023 15:05:11 GMT

Thanks ,I have already seen this post. But I wanted to know if this is possible without the life test procedure

Re: Using sgplot for kaplan meier analysis

sbxkoenk — Tue, 14 Mar 2023 15:15:10 GMT

Oh sorry. I missed the 'WITHOUT'.

You can do Kaplan-Meier without PROC LIFETEST of course.

Just program it in a data step !

The Kaplan-Meier estimate is the simplest way of computing the survival over time in spite of all these difficulties associated with subjects or situations. For each time interval, survival probability is calculated as the number of subjects surviving divided by the number of patients at risk.

PharmaSUG2011 - Paper CC16
A Programmer’s Introduction to Survival Analysis Using Kaplan Meier
Methods
John Ventre, United Biosource Corporation, Blue Bell, PA
Lisa Fine, United Biosource Corporation, Ann Arbor, MI
https://www.pharmasug.org/proceedings/2011/CC/PharmaSUG-2011-CC16.pdf

Introduction to Survival Analysis in SAS
https://stats.oarc.ucla.edu/sas/seminars/sas-survival/

Koen