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
| Linear growth - Number of latent classes | |||||
|---|---|---|---|---|---|
| 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 | 8032.7*** | 2846.4*** | 1639.3*** | 1314.5*** | |
| Adj. LMR-LRT | 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 | 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 | ||||
| Quadratic growth - Number of latent classes | |||||
| 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 | 8067.8*** | 3184.6*** | 1943.9*** | ||
| Adj. LMR-LRT | 7900.1*** | 3118.4*** | 1903.5*** | ||
| BIC | 3,321,592 | 3,313,571 | 3,310,434 | 3,308,537 | |
| SABIC | 3,321,560 | 3,313,527 | 3,310,377 | 3,308,467 | |
| Entropy | 0.644 | 0.722 | 0.668 | ||
| 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 | |||||