Table 2.
Growth mixture model fit statistics, class sizes indicating the optimal number of classes representing diversity in living standards trajectories with age (n=4811)
| Fit statistics | Two-class model (C2) | Three-class model (C3) | Four-class model (C4) |
| Log-likelihood value | −52790.4 | −52573.9 | −52425.0 |
| No estimated parameters | 19 | 22 | 25 |
| Information criteria | |||
| SSABIC | 105 681.5 | 105 264.5 | 104 982.5 |
| Class reliability | |||
| Entropy | 0.85 | 0.84 | 0.82 |
| Av. posterior probabilities range | 0.90–0.97 | 0.78–0.96 | 0.72–0.94 |
| k versus k-1 classes | |||
| Adj. LMR-LRT (p value) | 1193.1 (0.000) | 416.6 (0.000) | 286.6 (0.022) |
| Class size (sample %) | |||
| C1 | 3997 (83.1) | 3920 (81.5) | 3577 (74.4) |
| C2 | 814 (16.9) | 566 (11.8) | 652 (13.6) |
| C3 | 326 (6.8) | 323 (6.7) | |
| C4 | 259 (5.4) | ||
Data weighted by response characteristics.
Adj.LMR-LRT, Adjusted Lo-Mendell-Rubin likelihood ratio test; SSABIC, Sample-size adjusted Bayesian information criteria.