`R/methods.R`

`vcov.chandwich.Rd`

`vcov`

method for class "chandwich".

```
# S3 method for chandwich
vcov(object, complete = FALSE, adjusted = TRUE, ...)
```

- object
an object of class "chandwich", a result of a call to

`adjust_loglik`

.- complete
A logical scalar. If

`complete = TRUE`

then the full variance-covariance matrix is returned, including any fixed using`fixed_pars`

and`fixed_at`

in the call to`adjust_loglik`

. In this instance the corresponding elements of the matrix are`NA`

. Otherwise, the variance-covariance matrix of only the free parameters is returned.The default is

`complete = FALSE`

, which is in sync with`coef.chandwich`

.- adjusted
A logical scalar. If

`adjusted = TRUE`

then the variance-covariance matrix is estimated using a sandwich estimator. Otherwise, the inverse of the observed information at the MLE is used.- ...
Additional optional arguments. At present no optional arguments are used.

A numeric matrix. The dimensions will be named if names were
provided in the call to `adjust_loglik`

.

The variance-covariance matrix is based on
`attributes(object)$adjVC`

for `adjusted = TRUE`

and
`attributes(object)$VC`

for `adjusted = FALSE`

.
These return the estimate variance-covariance matrix of only the
free parameters.

`coef.chandwich`

: `coef`

method for
class "chandwich".

`summary.chandwich`

: `summary`

method for
class "chandwich".

`adjust_loglik`

to adjust a user-supplied
loglikelihood.