[BioC] IC 95% of kappa (intra-class coefficient)

[myint.tin-tin-htar at jvr.ap-hop-paris.fr]

hello,

I'm searchinf for some syntax for 95% confidence interval of kappa (ICC)
for inter-observer agreement.
I followed as described in R documentation,

For IC 95%, it works well for bootstrap as follow :
> icc.boot <- function(data,x) {icc(data[x,])[[7]]}
> bootpbf <- boot(lsm[,c(21,22)],icc.boot,1000)
> quantile(bootpbf$t,c(0.025,0.975)

but for simple ICC, I got only ICC but not for its CI 95%
> pbf<-icc(lsm[,c(21,22)])
> quantile(pbf$t,c(0.025,0.975))
 2.5% 97.5%
   NA    NA
Warning message:
is.na() applied to non-(list or vector) in: is.na(x)

How can I manage it to solve the problem of NA and get CI 95% of that
kappa?

thank you for all your advices.

Tin Tin

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