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 the_statistician posted on Friday, May 26, 2017 - 9:49 am
Hi Dr. Muthen,

How could I access the estimate of the dispersion parameter and the variance of a latent profile analysis with three time points estimated with a negative binomial latent class indicator at each time point?

I would like to impose constraints on the negative binomial dispersion parameter and the variance, but it is not clear how I would be able to access both parameters.
 Bengt O. Muthen posted on Friday, May 26, 2017 - 5:51 pm
The dispersion parameter for a negbin variable y is referred to as


I don't know what you mean by "and the variance". There is no variance connected with a negbin variable, just the dispersion.
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