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| Main effects | ||
| Fixed effects | Coefficient | S.E. |
| Level 2 | ||
| Intercept | −2.58 | |
| Dominant treatment | −.80 | .55 |
| Level 1 | ||
| Timeline acute - chronic | .72 | .36* |
| Personal control | .84 | .44 |
| Effectiveness of treatment | .91 | .40* |
| Random effects | Variance | S.E. |
| Level 2 var. 2nd order/PQL | .37 | .40 |
Wald statistic used to test the significance of the coefficients.
