Dear list,
I have bootstrapped the C-index of a logistic regression model, 500 times.
> results <- boot(data=data,statistic=cindex,R=500,formula = myformula)
When I plot the results I get a histogram of the bootstrapped where the Y axis
is density, but it spans from 0 to about 25
> plot(results)
Can anyone help me interpret what the Y axis actually means in this context? I
am a bit lost, since I thought it would range from 0 to 1.
> sessionInfo()
R version 2.8.1 (2008-12-22)
i386-pc-mingw32
locale:
LC_COLLATE=Spanish_Spain.1252;LC_CTYPE=Spanish_Spain.1252;LC_MONETARY=Spanish_Spain.1252;LC_NUMERIC=C;LC_TIME=Spanish_Spain.1252
attached base packages:
[1] splines stats graphics grDevices utils datasets methods
[8] base
other attached packages:
[1] boot_1.2-35 Design_2.1-2 survival_2.34-1 Hmisc_3.4-4
loaded via a namespace (and not attached):
[1] cluster_1.11.11 grid_2.8.1 lattice_0.17-17
TIA,
Dave
_________________________________________________________________
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
