Variance-Covariance Matrix for a Fitted Continuous Ordinal Mixed Model Object

Description

Calculates variance-covariance matrix for a fitted ocmm object

Usage

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

Arguments

object

an ocmm object

...

further arguments to be passed to methods

Details

For the generalized logistic g-function, the variance-covariance matrix of model parameters is of dimension (len_beta +4)x(len_beta +4), where len_beta is the number of beta coefficients in the model.

Value

Variance-covariance matrix of model parameters

Author(s)

Maurizio Manuguerra, Gillian Heller

See Also

ocmm

Examples

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## Not run: 
fit.overall.rnd  <- ocmm(overall  ~ cycleno + age + bsa + treatment + (1|randno), data=ANZ0001)
vcov(fit.overall.rnd)

## End(Not run)

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