mrwilcoxontau: MR estimate of tau.
In kloke/mrfit: Multiple rankings estimates

Description Usage Arguments Author(s) References See Also Examples

MR estimate of tau.

1	mrwilcoxontau(x, y, center, beta)

`x`	n by p design matrix
`y`	n by 1 response vector
`center`	n by 1 vector denoting block (cluster) membership
`beta`	p by 1 vector

John Kloke kloke@biostat.wisc.edu

Rashid, M.M., McKean, J.W., Kloke, J.D. (2011). R Estimates and Associated Inferences for Mixed Models with Covariates in a Multi-Center Clinical Trial. Statistics in Biopharmaceutical Research.

mrdisp

### Internal function ###
## The function is currently defined as
function (x, y, center, beta) 
{
    x <- as.matrix(x)
    a <- unique(center)
    nc <- length(a)
    p <- ncol(x)
    tauhats <- rep(0, nc)
    for (i in 1:nc) {
        x1 <- as.matrix(x[center == a[i], ])
        y1 <- y[center == a[i]]
        tauhats[i] <- rashidtau(y1 - x1 %*% beta, p)
    }
    mean(tauhats)
  }