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Mplus Discussion > Categorical Data Modeling >
 Anonymous posted on Thursday, July 21, 2005 - 6:27 pm
I have 10 4-category ordinal items which are both part of a measurement model and also regressed onto covariates. On 3-4 items the last category is hardly used at all (< 1% in samples of 1000-1500). Is there any harm in leaving these as is or should one collapse the last two categories?
 Linda K. Muthen posted on Thursday, July 21, 2005 - 6:44 pm
If the sparse cells don't cause you any convergence problems, leave them as is. Otherwise collapse.
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