R: Diagnostics for Survival Regression Models

SurvivalDiagnostics {RcmdrPlugin.survival}

R Documentation

Diagnostics for Survival Regression Models

Description

These are primarily convenience functions for the RcmdrPlugin.survival package, to produce diagnostics for coxph and survreg models in a convenient form for plotting via the package's GUI.

Usage

crPlots(model, ...)
## S3 method for class 'coxph'
crPlots(model, ...)

## S3 method for class 'coxph'
dfbeta(model, ...)
## S3 method for class 'dfbeta.coxph'
plot(x, ...)

## S3 method for class 'coxph'
dfbetas(model, ...)
## S3 method for class 'dfbetas.coxph'
plot(x, ...)

## S3 method for class 'survreg'
dfbeta(model, ...)
## S3 method for class 'dfbeta.survreg'
plot(x, ...)

## S3 method for class 'survreg'
dfbetas(model, ...)
## S3 method for class 'dfbetas.survreg'
plot(x, ...)

MartingalePlots(model, ...)
## S3 method for class 'coxph'
MartingalePlots(model, ...)

testPropHazards(model, test.terms = FALSE, plot.terms = FALSE, ...)
## S3 method for class 'coxph'
testPropHazards(model, test.terms = FALSE, plot.terms = FALSE, ...)

Arguments

`model`, `x`	a Cox regression or parametric survival regression model, as appropriate.
`test.terms`	test proportional hazards by terms in the Cox model, rather than by coefficients (default is `FALSE`).
`plot.terms`	diagnostic plots of proportional hazards by terms in the Cox model, rather than by coefficients (default is `FALSE`).
`...`	arguments to be passed down.

Details

crPlots.coxph is a method for the crPlots function in the car package, to create component+residual (partial-residual) plots, using residuals.coxph and predict.coxph in the survival package.
testPropHazards is essentially a wrapper for the cox.zph function in the survival package.
MartingalePlots creates null-model Martingale plots for Cox regression models, using the residuals.coxph function in the survival package.
dfbeta.coxph and dfbetas.coxph provide methods for the standard dfbeta and dfbetas functions, using the residuals.coxph function in the survival package for computation. plot.dfbeta.coxph and plot.dfbetas.coxph are plot methods for the objects produced by these functions.
dfbeta.survreg, dfbetas.survreg, plot.dfbeta.survreg and plot.dfbetas.survreg are similar methods for survreg objects.

Value

Most of these function create graphs and don't return useful values; the dfbeta and dfbetas methods create matrices of dfbeta and dfbetas values.

Author(s)

John Fox <jfox@mcmaster.ca>

References

John Fox, Marilia Sa Carvalho (2012). The RcmdrPlugin.survival Package: Extending the R Commander Interface to Survival Analysis. Journal of Statistical Software, 49(7), 1-32. doi:10.18637/jss.v049.i07.