Nothing
###################################################################
# Main function for univariate case, binary exposure, distribution
###################################################################
pow_uni_dist_bin <- function(prev, logOR, p, size.2sided=0.05, sampleSize=1000, lam=0.5,
interval=c(-7, 7), tol=0.0001) {
beta <- logOR
# Get the intercept in the general pop
alphastar <- getPopInt_dist_bin(beta, prev, p, interval=interval, tol=tol)
# Compute the prevalence of x=1 in the case-control population
temp <- pdcc_dist_bin(prev, alphastar, beta, p, lam)
px1 <- temp$px1.case
px0 <- temp$px1.control
pxcc <- temp$px1
# Get the intercept in the cc pop
alphacc <- getCCInt_dist_bin(beta, pxcc, lam, interval=interval, tol=tol)
# Compute information matrix
info <- getInfo_dist_bin(alphacc, beta, lam, prev, p, px1, px0)
# Get the variances for the Wald and score test
temp <- getVar_dist_bin(px1, px0, lam, info)
var.wald.null <- temp$var.wald.null
var.wald.alt <- temp$var.wald.alt
var.score.null <- temp$var.score.null
var.score.alt <- temp$var.score.alt
# Compute powers for Wald test
temp <- getPower(sampleSize, size.2sided, logOR, var.wald.null, var.wald.alt)
pow.wald.1 <- temp$pow.eq1
pow.wald.2 <- temp$pow.eq2
# Compute powers for score test
temp <- getPower(sampleSize, size.2sided, px1-px0, var.score.null, var.score.alt)
pow.score.1 <- temp$pow.eq1
pow.score.2 <- temp$pow.eq2
list(pow.wald.1=pow.wald.1, pow.wald.2=pow.wald.2,
pow.score.1=pow.score.1, pow.score.2=pow.score.2)
} # END: pow_uni_dist_bin
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.