Comparing slopes in piecewise models PreviousNext
Mplus Discussion > Growth Modeling of Longitudinal Data >
 Nina L. Alesci posted on Sunday, May 18, 2008 - 8:17 pm
I have created 5 piecewise models for answering the same question for 5 age groups and the whole population in TYPE=COMPLEX. Then, I constrained each model to have equal slopes for comparison. Now I want to compare the models using both the 1 df chi-square difference test and the logliklihood. I used the formulas on and computed them using the scaling correction factors. Yet my results differ for the chi-square difference test and the logliklihood. Shouldn't they yield the same answer? What could explain the different findings?
 Linda K. Muthen posted on Monday, May 19, 2008 - 8:13 am
In large samples, the conclusion should be the same using either chi-square or the loglikelihood. If you want more information, send the relevant information and your license number to
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