vcov.regmedint_mod_poisson function

Robust sandwich variance estimator for modified Poisson

Provide robust sandwich variance-covariance estimate using sandwich.

## S3 method for class 'regmedint_mod_poisson'
vcov(object, ...)

Arguments

• object: A model object of the class regmedint_mod_poisson
• ...: For compatibility with the generic.

Returns

A variance-covariance matrix using the sandwich.