coxStrata: Define the strata for a new dataset

In riskRegression: Risk Regression Models and Prediction Scores for Survival Analysis with Competing Risks

Define the strata for a new dataset

Description

Define the strata in a dataset to match those of a stratified Cox model

Usage

coxStrata(object, data, sterms, strata.vars, strata.levels)

## S3 method for class 'cph'
coxStrata(object, data, sterms, strata.vars, strata.levels)

## S3 method for class 'coxph'
coxStrata(object, data, sterms, strata.vars, strata.levels)

## S3 method for class 'phreg'
coxStrata(object, data, sterms, strata.vars, strata.levels)

Arguments

object	The fitted Cox regression model object either obtained with coxph (survival package), cph (rms package), or phreg (mets package).
data	a data.frame or a data.table
sterms	terms in the formula corresponding to the strata variables
strata.vars	the name of the variables used to define the strata
strata.levels	a named list containing for each variable used to form the strata all its possible levels
levels	the strata levels that have been used to fit the Cox model

Details

if no strata variables returns a vector of "1" (factor).

Author(s)

Brice Ozenne [e-mail]

riskRegression documentation built on May 29, 2024, 10:59 a.m.