Table 6.
Multilevel models explaining the SDQ total difficulties post-test score (N = 194).
| Model | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Intercept | 2.801 (0.128) **** | 2.796 (0.072) **** | 3.050 (0.122) **** | 2.879 (0.072) **** |
| Fixed Effects | ||||
| Pre-test score | 0.816 (0.052) **** | 0.823 (0.051) **** | 0.835 (0.060) **** | |
| Gender (girls as reference) | 0.110 (0.084) | 0.099 (0.083) | 0.103 (0.084) | |
| Age | −0.013 (0.004) *** | −0.012 (0.004) *** | −0.013 (0.004) *** | |
| Condition (control group as reference) | −0.338(0.142) ** | −0.333 (0.145) ** | ||
| Pre-test score * Condition | −0.048 (0.123) | |||
| Random Effects | ||||
| Variance of the within-level residual errors | 0.492 (0.053) **** | 0.177 (0.025) **** | 0.177 (0.025) **** | 0.177 (0.025) **** |
| Variance of the between-level residual errors | 0.308 (0.111) *** | 0.057 (0.033) * | 0.035 (0.024) | 0.032 (0.025) |
| Deviance (df) | 454.966 (3) | 148.456 (6) | 143.496 (7) | 143.354 (8) |
| Decrease in Deviance | 306.51 **** | 4.96 ** | 0.04 |
Note. **** = p < 0.0001, *** = p < 0.001, ** = p < 0.01, * = p < 0.05.