Displaying 1 result from an estimated 1 matches for "posnod".
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posed
2005 Sep 02
1
C-index : typical values
...an example using the German Breast Study Group data available in
the mfp package. The predictors in the model were selected by stepAIC().
library(Design); library(Hmisc); library(mfp); data(GBSG)
fit <- cph( Surv( rfst, cens ) ~ htreat + tumsize + tumgrad +
posnodal + prm, data=GBSG, x=T, y=T )
val <- validate.cph( fit, dxy=T, B=200 )
round(val, 3)
index.orig training test optimism index.corrected n
Dxy -0.377 -0.383 -0.370 -0.013 -0.364 200
R2 0.140 0.148 0.132 0.016 0.124 200
Slope...