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Mplus Discussion > Categorical Data Modeling >
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 Alice Frye posted on Wednesday, October 08, 2008 - 12:36 pm
LCA uses the MLR estimator.
Does this mean that there is no additional value to be gained by using a negative binomial or zero inflated negative binomial regression for categorical variables within a latent profile analysis, because the MLR is sufficiently impervious to violations of distributional assumptions?

I'd be grateful for any comments or references people might have on this topic.
 Linda K. Muthen posted on Wednesday, October 08, 2008 - 4:38 pm
MLR may not be sufficient for continuous variables where deviations from normality are extreme and for categorical and count variables with strong floor or ceiling effects. Special modeling like the negative binomial model for count variables may be needed in these situations.
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