fixef.coxme {coxme} | R Documentation |

## 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 |

`x` |
an object inheriting from class |

`...` |
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

### See Also

`coxme`

, `random.effects`

,
`fixed.effects`

### 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)
```

[Package

*coxme*version 2.2-20 Index]