Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!
Get Started for Free

concordancefit

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, keepstrata=10)

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
keepstrata

either TRUE, FALSE, or an integer value. Computations are always done within stratum, then added. If the total number of strata greater than keepstrata, or keepstrata=FALSE, those subtotals are not kept in the output.

Value

a list containing the results

Author(s)

Terry Therneau

See Also

survival

Survival Analysis

v3.2-11
LGPL (>= 2)
Authors
Terry M Therneau [aut, cre], Thomas Lumley [ctb, trl] (original S->R port and R maintainer until 2009), Atkinson Elizabeth [ctb], Crowson Cynthia [ctb]
Initial release
2021-04-25

We don't support your browser anymore

Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.