Nothing
zORwald <- function(dat, conf.level){
N. <- 1 - ((1 - conf.level) / 2)
z <- qnorm(N., mean = 0, sd = 1)
a <- dat[1]; b <- dat[3]; c <- dat[2]; d <- dat[4]
N1 <- a + b; N0 <- c + d
wOR.p <- (a / b) / (c / d)
lnwOR <- log(wOR.p)
lnwOR.var <- 1/a + 1/b + 1/c + 1/d
lnwOR.se <- sqrt(lnwOR.var)
ll <- exp(lnwOR - (z * lnwOR.se))
ul <- exp(lnwOR + (z * lnwOR.se))
c(wOR.p, ll, ul)
}
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