| T O P I C R E V I E W |
| Eisenhauer77 |
Posted - 11/23/2011 : 10:19:08 AM
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 8G.0.63.988 SR6
Operating System: Win7
Hi. I am wondering if it is possible to compare 3 or more groups simultaneously using KAPLAN-MEIER survival analyses with LOG RANG test? I can plot 3 groups or more in the survival graph, but get only one LOG RANG probability value... How can I test for differences between each possible pair of groups?
Thanks for your help! |
| 1 L A T E S T R E P L I E S (Newest First) |
| Echo_Chu |
Posted - 11/24/2011 : 03:51:26 AM
Hi, Tobias,
I am afraid that currently there is no a easy way in Origin for you to compare the survival functions pairwisely.
A workaround for it is
1) Sort worksheet by the group column. (Highlight the group column, right click and select Sort Worksheet: Ascending )
2) Run Kaplan-Meier with all data
3) Mask the unneeded groups in source data
4) Click Recalculate button to get log-rank result of your disired pair of groups.
Repeat step 3, 4 above to get log-rank result of each pair of groups.
Echo
OriginLab Corp |
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