calc_risk {cgrcusum} R Documentation

## Calculate the Cox risk associated with the covariates of the individual

### Description

This function can be used to calculate the risk associated with the covariates of an individual under a specified Cox PH model.

### Usage

calc_risk(data, coxphmod = NULL)


### Arguments

 data data frame containing the covariates to be used for risk-adjustment as named columns. coxphmod (optional) a cox proportional hazards model generated using coxph() or a list containing: $formula (~ covariates),$coefficients (named vector specifying risk adjustment coefficients for covariates - names must be the same as in \$formula and data colnames).

### Details

The subject specific increased risk is given by:

e^{\beta Z_i}

with \beta the Cox coefficients and Z_i the covariates of subject i.

### Value

A vector of nrow(data) specifying the increased risk of failure for each subject.

### Author(s)

Daniel Gomon

Other utils: exp_hazards, gen_arriv_times(), gen_surv_times(), runlength()
crdat <- data.frame(age = rnorm(10, 40, 5), BMI = rnorm(10, 24, 3))