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coxme (version 2.2-22)

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

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.

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.

Author

Terry Therneau

See Also

coxme, random.effects, fixed.effects

Examples

Run this code
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)

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