Table 2 Fit statistics of the Latent Growth Curve Model and Growth Mixture Models
From: The impact of physical activity on healthy ageing trajectories: evidence from eight cohort studies
| Â | Linear growth - Number of latent classes | ||||
|---|---|---|---|---|---|
| Â | 1 class | 2 classes | 3 classes | 4 classes | 5 classes |
Loglikelihood (N of parameters) | −1,661,740 (6) | −1,657,724 (9) | −1,656,300 (12) | −1,655,481 (15) | −1,654,823 (18) |
BLRT | Â | 8032.7*** | 2846.4*** | 1639.3*** | 1314.5*** |
Adj. LMR-LRT | Â | 7811.6*** | 2768.1*** | 1594.2*** | 1278.3*** |
BIC | 3,323,552 | 3,315,554 | 3,312,743 | 3,311,139 | 3,309,860 |
SABIC | 3,323,532 | 3,315,526 | 3,312,705 | 3,311,091 | 3,309,803 |
Entropy | Â | 0.644 | 0.692 | 0.661 | 0.690 |
Group size (%) | |||||
 Class 1 | 100 | 73.5 | 4.1 | 54.1 | 17.2 |
 Class 2 |  | 26.5 | 25.4 | 9.9 | 2.1 |
 Class 3 |  |  | 70.5 | 3.6 | 43.1 |
 Class 4 |  |  |  | 32.4 | 34.1 |
 Class 5 |  |  |  |  | 3.5 |
| Â | Quadratic growth - Number of latent classes | ||||
| Â | 1 class | 2 classes | 3 classes | 4 classes | 5 classes |
Loglikelihood (N of parameters) | −1,660,737 (10) | −1,656,703 (14) | −1,655,111 (18) | −1,654,139 (22) |  |
BLRT | Â | 8067.8*** | 3184.6*** | 1943.9*** | Â |
Adj. LMR-LRT | Â | 7900.1*** | 3118.4*** | 1903.5*** | Â |
BIC | 3,321,592 | 3,313,571 | 3,310,434 | 3,308,537 | Â |
SABIC | 3,321,560 | 3,313,527 | 3,310,377 | 3,308,467 | Â |
Entropy | Â | 0.644 | 0.722 | 0.668 | Â |
Group size (%) | |||||
 Class 1 | 100 | 73.5 | 25.2 | 34.2 |  |
 Class 2 |  | 26.5 | 3.4 | 12.2 |  |
 Class 3 |  |  | 71.4 | 3.3 |  |
 Class 4 |  |  |  | 50.3 |  |
 Class 5 |  |  |  |  |  |