coxme: fixef.coxme – R documentation

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fixef.coxme

Extraction functions for Coxme

Description

Extract the fixed effects, randome effects, variance of the fixed effects, or variance of the random effects from a coxme model.

Usage

## S3 method for class 'coxme'
fixef(object, ...)
## S3 method for class 'coxme'
ranef(object, ...)
## S3 method for class 'coxme'
vcov(object, ...)
## S3 method for class 'coxme'
VarCorr(x, ...)

Arguments

`object`	an object inheriting from class `coxme` representing the result of a mixed effects Cox model.
`x`	an object inheriting from class `coxme` representing the result of a mixed effects Cox model.
`...`	some methods for this generic require additional arguments. None are used in this method.

Value

the fixed effects are a vector and the variance of the fixed effects is a matrix. The random effects will be a list with one element for each random effects terms, as will be their variance.

Author(s)

Terry Therneau

Examples

rat1 <- coxme(Surv(time, status) ~ rx + (1|litter), rats)
fixed.effects(rat1)
vcov(rat1)
random.effects(rat1)[[1]]  #one value for each of the 50 litters
VarCorr(rat1)

coxme

Mixed Effects Cox Models

v2.2-16

LGPL-2

Authors

Terry M. Therneau [aut, cre]

Initial release