topic Re: Kaplan-Meier - different p-values according to different time points in Statistical Procedures

Kaplan-Meier - different p-values according to different time points

antor82 — Wed, 12 Feb 2020 17:20:00 GMT

Hi All!

I'm conducting a survival analysis and I would like to test if there were differences in freedom from events at different time points (e.g. 1 yr - 2 yr and so on) between groups.

Can anybody give me some hints?

Tks in advance

Antonio

Re: Kaplan-Meier - different p-values according to different time points

cminard — Sun, 29 Mar 2020 22:24:56 GMT

The purpose of the survival analysis is to account for censoring and to use all available data. I suggest reporting the log-rank p-value for the KM curve. Then, the plot can include 95% confidence bands. If you're interested in reporting, say, the 1- and 2-year marks, then you can report the survival probabilities with 95% confidence intervals by group and time point. I don't think that it's advantageous or useful to do a formal hypothesis test at those time points.

Re: Kaplan-Meier - different p-values according to different time points

riya275 — Tue, 31 Mar 2020 15:19:25 GMT

Maybe you should consider using cox-proportion model.

Re: Kaplan-Meier - different p-values according to different time points

antor82 — Tue, 14 Apr 2020 15:46:38 GMT

thank You for your suggestion