Table 4.
Random effects for mixed models associated with moderate-to-vigorous physical activity.
| Random effects | Unconditional means model | Model 1 | Model 2 | ||||||
|
|
β (SE) | Wald Z | P | β (SE) | Wald Z | P | β (SE) | Wald Z | P |
| Residual | 34.58 (0.95) |
36.45 | <.001 | 32.55 (1.09) |
29.95 | <.001 | 32.69 (1.10) |
29.68 | <.001 |
| Intercept | 1.59 (0.50) |
3.19 | <.001 | 3.86 (1.61) |
2.40 | .02 | 3.94 (1.64) |
2.40 | .02 |
| Linear time |
|
|
|
0.03 (0.02) |
1.45 | .15 | 0.03 (0.02) |
1.46 | .14 |
| Rho |
|
|
|
–0.79 (0.13) |
–5.91 | <.001 | –0.82 (0.12) |
–6.96 | <.001 |