1. This may be due to not using enough STARTS to get the best solution.
2. See the paper on our website:
Asparouhov, T. & Muthen, B. (2015). Residual associations in latent class and latent transition analysis. Structural Equation Modeling: A Multidisciplinary Journal, 22:2, 169-177, DOI: 10.1080/10705511.2014.935844. (Download scripts).
Dear Dr Muthen, I have increase Starts to 400: 100. It takes too long to run the model but still not reproducible when the order of variables is changed. Also the is warning a bout loglikelihood:
THE BEST LOGLIKELIHOOD VALUE HAS BEEN REPLICATED. RERUN WITH AT LEAST TWICE THE RANDOM STARTS TO CHECK THAT THE BEST LOGLIKELIHOOD IS STILL OBTAINED AND REPLICATED.
IN THE OPTIMIZATION, ONE OR MORE LOGIT THRESHOLDS APPROACHED AND WERE SET AT THE EXTREME VALUES. EXTREME VALUES ARE -15.000 AND 15.000. THE FOLLOWING THRESHOLDS WERE SET AT THESE VALUES: * THRESHOLD 1 OF CLASS INDICATOR HEATER45 FOR CLASS 2 AT ITERATION 227 * THRESHOLD 2 OF CLASS INDICATOR HEATER45 FOR CLASS 2 AT ITERATION 227 ..etc
The model include only 10 variables (8 are binary and 2 is order variables with 4 levels). It is not too complex isn't it?.