t Covariate</h2>
<p>In the next step, we add a latent covariate to the model. That is, we use the option <em>lv</em> to specify a list of latent variables giving the names of the latent variables and a character vector of indicators measuring the latent variable. We can use the name of the latent variable within the <em>forml</em> option. In addition, we change <em>family</em> to be “nbinom” in oder to estimate a negative binomial regression, that is, adding a dispersion parameter to the model:</p>
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