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asthma
2002 Jul 18
1
problem with substitute
Hello, I have a data base with variables pasthma,kasthma,sex,etc.
I wrote a program to compute the Kappa statistic between pasthma and
kasthma.
Actually "did the child had asthma" answered by the parents and by the
child.
kappa <- function(x) {
r <- paste("p",evaluate(x),sep="")
c <- paste("k",e...