Question: Survival analysis with three prediction variables
1
gravatar for newbee
3.4 years ago by
newbee40
United States
newbee40 wrote:

Hello,

This could be a naive question; however, I am just a beginner in doing survival analysis. I stratified patient samples into tertile (t1, t2, and t3) based on a known oncogene's expression values. I wanted to draw kaplan-meier (KM) survival curves for t1, t2, and t3. Thereafter, I wanted to compute log-rank test p-value between t2 and t1, and between t3 and t1. My question is when I compute log-rank test p-value between t2 and t1, should I consider only those samples that belong to t2 and t1? Should I proceed with a separate piece of analysis after excluding samples that belong to t3 group? Seeking your advice.

Thank you.

ADD COMMENTlink modified 3.4 years ago by dario.garvan460 • written 3.4 years ago by newbee40
0
gravatar for dario.garvan
3.4 years ago by
dario.garvan460
Australia
dario.garvan460 wrote:

Yes, you should exclude samples from the third group.

ADD COMMENTlink written 3.4 years ago by dario.garvan460
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