R: Compute the concordance

concordancefit {survival}

R Documentation

Compute the concordance

Description

This is the working routine behind the concordance function. It is not meant to be called by users, but is available for other packages to use. Input arguments, for instance, are assumed to all be the correct length and type, and missing values are not allowed: the calling routine is responsible for these things.

Usage

concordancefit(y, x, strata, weights, ymin = NULL, ymax = NULL,
 timewt = c("n", "S", "S/G", "n/G", "n/G2", "I"), cluster, influence =0,
 ranks = FALSE, reverse = FALSE, timefix = TRUE)

Arguments

`y`	the response. It can be numeric, factor, or a Surv object
`x`	the predictor, a numeric vector
`strata`	optional numeric vector that stratifies the data
`weights`	options vector of case weights
`ymin, ymax`	restrict the comparison to response values in this range
`timewt`	the time weighting to be used
`cluster, influence,ranks, reverse, timefix`	see the help for the `concordance` function

Value

a list containing the results

Author(s)