Table 3. Fit indices for selecting the number of trajectories.
| No. of classes | AIC | BIC | SSBIC | Entropy | LRT p-value | BLRT p-value |
| Physical subscale | ||||||
| 1 | 4244.327 | 42172.594 | 4247.233 | |||
| 2 | 4187.966 | 4216.233 | 4190.872 | 0.825 | <.001 | <.001 |
| 3 | 4143.305 | 4182.172 | 4147.300 | 0.861 | .022 | <.001 |
| 4 | 4138.213 | 4187.680 | 4143.298 | 0.857 | .362 | <.001 |
| Emotional subscale | ||||||
| 1 | 3740.469 | 3768.736 | 3743.374 | |||
| 2 | 3687.295 | 3715.562 | 3690.201 | 0.869 | <.001 | <.001 |
| 3 | 3662.271 | 3701.138 | 3666.266 | 0.887 | .0950 | <.001 |
| 4 | 3660.237 | 3713.238 | 3665.685 | 0.898 | .1943 | .0870 |
| Social/family subscale | ||||||
| 1 | 3983.494 | 4011.762 | 3986.400 | |||
| 2 | 3976.655 | 4004.952 | 3979.591 | 0.717 | <.001 | <.001 |
| 3 | 3973.555 | 4012.422 | 3977.550 | 0.618 | .185 | .065 |
| 4 | 3966.820 | 4016.287 | 3971.905 | 0.633 | .013 | <.001 |
| 5 | 3965.786 | 4025.853 | 3971.960 | 0.689 | .036 | .089 |
| Functional subscale | ||||||
| 1 | 4418.907 | 4447.174 | 4421.813 | |||
| 2 | 4407.791 | 4436.058 | 4410.697 | 0.649 | <.001 | <.001 |
| 3 | 4408.101 | 4445.244 | 4412.460 | 0.593 | .0875 | .333 |
AIC: Akaike Information criterion; BIC: Bayesian information criterion; SSBIC: sample size adjusted Bayesian information criterion; LRT: Lo-Mendell-Rubin Test; BLRT: bootstrap likelihood ratio test. Note: We sought a model with lower values for the information criteria indices, higher entropy values, and significant p values for both the LRT and the BLRT.