Displaying 3 results from an estimated 3 matches for "billemont".
2005 Nov 13
1
selection of missing data
...ble to make the same thin as
ifelse(mela3,Skin & s.c== 0, 0,NA) with more than colomn and after to
exclude of my data the Na with na.omit.
The last question is how can i omit only the row which are NA value for
the colomn metastasis c(11:12,14:21,23,24))
Thank you for your help
Bertrand billemont
[[alternative text/enriched version deleted]]
2006 Jan 02
0
cox model test heterogeinity
...k on the breast cancer. I made a cox
model and i want to do a test of heterogeneity. Do you know how i
can
do this with R. I'm sorry for this question wich seems to be easy
for
you. I read the manual and the help and i don't find it.
Thanks for your help
Bertrand Billemont
2006 Jan 03
0
cox model
...y of residual by study the
proportional risk. So i used Coxzph formula, but the global test is p<
0.05, so my model is not a proportional risk.
Do you know how i can cut the cox model analysis before the 150 month,
wich are the time where the curves are crossing?
Thank you for your Help
Dr Billemont