| Parameter | Estimate | Std. Error | Wald Z | Sig. | 95% Confidence Interval | ||
| Lower Bound | Upper Bound | ||||||
| Residual | 0.800161 | 0.016131 | 49.604 | 0.000 | 0.769162 | 0.832410 | |
| Intercept [subject = s41] | Variance | 0.250310 | 0.069433 | 3.605 | 0.000 | 0.145334 | 0.431113 |