Model | Parameters n | Akaike's information criteria | Bayesian information criteria | Adjusted Bayesian information criteria | Entropy | p-value# |
Unconstrained | ||||||
Two-class | 101 | 13 585 | 13 981 | 13 660 | 0.884 | |
Three-class | 164 | 13 220 | 13 862 | 13 342 | 0.905 | |
Four-class | 235 | 12 913 | 13 833 | 13 087 | 0.907 | |
Constrained¶ | ||||||
Two-class | 45 | 13 833 | 14 009 | 13 866 | 0.878 | <0.001 |
Three-class | 79 | 13 416 | 13 725 | 13 475 | 0.896 | <0.001 |
Four-class | 121 | 13 072 | 13 545 | 13 161 | 0.906 | <0.001 |
#: p is for the likelihood ratio test comparing the unconstrained model with the constrained model for the same class size. ¶: constrained models: the class structures were the same at 1.5, 3 and 5 years, and at 8 and 11.5 years.