Table 3.
Model fit statistics for growth mixture models for the 4 primary variables of interest (shaded area indicates final number of classes)
| Classes | Entropy | AIC | BIC | VLMR LRT† | LMR† | BLRT† |
| Socialization | ||||||
| 1 | 12 285.611 | 12 323.541 | ||||
| 2 | 0.816 | 11 810.107 | 11 863.209 | 0.0001 | 0.0001 | <0.001 |
| 3 | 0.820 | 11 664.516 | 11 732.791 | <0.001 | <0.001 | <0.001 |
| 4 | 0.793 | 11 639.463 | 11 722.909 | 0.1074 | 0.1157 | <0.001 |
| Social Problems | ||||||
| 1 | 8884.418 | 8917.812 | ||||
| 2 | 0.902 | 8345.512 | 8390.037 | 0.0004 | 0.0006 | <0.001 |
| 3 | 0.845 | 8247.155 | 8302.811 | 0.1437 | 0.1572 | <0.001 |
| 4 | 0.849 | 8171.355 | 8238.143 | 0.1292 | 0.1391 | <0.001 |
| Estimated IQ | ||||||
| 1 | 12 863.345 | 12 898.015 | ||||
| 2 | 0.835 | 12 123.338 | 12 173.417 | 0.0008 | 0.001 | <0.001 |
| 3 | 0.872 | 11 770.473 | 11 835.960 | 0.0013 | 0.0017 | <0.001 |
| 4 | 0.851 | 11 607.923 | 11 688.820 | 0.0511 | 0.0558 | <0.001 |
| 5 | 0.831 | 11 528.662 | 11 624.967 | 0.0451 | 0.0496 | <0.001 |
| Attention Problems | ||||||
| 1 | 9057.908 | 9091.332 | ||||
| 2 | 0.890 | 8540.876 | 8585.441 | 0.0457 | 0.0523 | <0.001 |
| 3 | 0.901 | 8380.756 | 8436.462 | 0.1088 | 0.117 | <0.001 |
| 4 | 0.866 | 8307.395 | 8374.242 | 0.0991 | 0.1084 | <0.001 |
| 5 | 0.884 | 8237.988 | 8315.977 | 0.1043 | 0.1148 | <0.001 |
AIC: Akaike information criteria; BIC: Bayesian information criteria; VLMR LRT: Vuong-Lo-Mendell-Rubin Likelihood Ratio Test; LMR: Lo-Mendell-Rubin adjusted LRT test; BLRT: Bootstrap Likelihood Ratio Test.
†P-value indicating significance of test comparing n classes versus n − 1 classes.