Table 5. Information criteria for MLE for three sets of assumptions: fixed slope-fixed intercept, fixed slope-random intercept, and random slope-random intercept.
| Fixed slope-fixed intercept | Fixed slope-random intercept | Random slope-random intercept | |||||
| Method | Variable name | AIC | BIC | AIC | BIC | AIC | BIC |
| ACSM-walk* | ACSM | 2601 | 2608 | 2268 | 2281 | ** | ** |
| Force production | EXT-FP | 2642 | 2648 | 2255 | 2268 | 1959 | 1978 |
| CoM-GRF | EXT-GRF | 2650 | 2657 | 2321 | 2335 | 2089 | 2108 |
| CoM-sacrum-model | EXT-MAT | 2664 | 2671 | 2292 | 2304 | 2018 | 2038 |
| CoM- sacrum-measured | EXT-SAC | 2771 | 2778 | 2546 | 2559 | 2508 | 2527 |
| Internal work | INT-MAT | 2656 | 2663 | 2256 | 2269 | 1965 | 1985 |
| Joint moments | COMB-JM | 2708 | 2714 | 2603 | 2616 | 2554 | 2574 |
| Model (int + ext work) | COMB-MAT | 2662 | 2669 | 2283 | 2296 | 2002 | 2022 |
*ACSM regression statistics are for gross 
.
**random slope-random intercept model not different from fixed slope-random intercept model.