Table 4.
Group, time and interaction effects from the MMRM analysis
| Group effect | Time effect | Interaction effect | ||||
|---|---|---|---|---|---|---|
| F (df) | p | F (df) | p | F (df) | p | |
| BMIa | 0.07 (1,47.8) | .93 | 7.12 (6,74.8) | <.001 | 0.61 (6,74.9) | .72 |
| EDE-Qa Global | 0.12 (1,51.44) | .73 | 9.09 (6,48.3) | <.001 | 0.62 (6,48.3) | .71 |
| Restraint | 0.18 (1,52.2) | .67 | 1.80 (6,61.7) | .11 | 0.25 (6,61.8) | .96 |
| Eating | 0.02 (1,46.8) | .89 | 14.83 (6,60.7) | <.001 | 0.33 (6,60.8) | .92 |
| Shape | 0.14 (1,53.2) | .71 | 9.68 (6,44.6) | <.001 | 1.16 (6,44.6) | .34 |
| Weight | 0.10 (1,55.2) | .76 | 5.40 (6,64.5) | <.001 | 0.67 (6,64.6) | .67 |
| BSQ | 0.74 (1,60.7) | .40 | 5.67 (5,63.3) | <.001 | 0.39 (5,63.3) | .86 |
| EDI | ||||||
| D | 0.92 (1,61.1) | .76 | 3.62 (5,45.7) | .008 | 0.39 (5,45.7) | .85 |
| B | 0.15 (1,43.1) | .70 | 0.68 (5,63.2) | .64 | 0.81 (5,63.1) | .54 |
| Bd | 3.60 (1,53.0) | .063 | 3.75 (5,71.1) | .005 | 0.81 (5,71.1) | .54 |
| Inef | 2.37 (1,58.2) | .13 | 6.23 (5,63.3) | <.001 | 0.73 (5,63.3) | .61 |
| Perf | 0.25 (1,62.0) | .62 | 0.63 (5,60.8) | .68 | 1.53 (5,60.7) | .19 |
| Interp | 0.003 (1,51.6) | .96 | 1.88 (5,65.0) | .11 | 1.52 (5,65.0) | .20 |
| Intero | 0.68 (1,63.5) | .41 | 2.37 (5,54.8) | .051 | 1.38 (5,55.8) | .24 |
| MADRS | 3.91 (1,45.1) | .054 | 2.14 (5,125.6) | .064 | 1.33 (5,125.5) | .26 |
| QOLI | 0.11 (1,59.0) | .74 | 5.23 (5,41.6) | .001 | 0.38 (5,41.5) | .86 |
| RSE | 0.06 (1,49.1) | .82 | 6.08 (5,81.1) | <.001 | 0.88 (5,81.0) | .50 |
| WCQ | 0.02 (1,38.2) | .88 | 0.95 (5,118.6) | .45 | 1.78 (5,118.8) | .12 |
| SCL GSI | 0.90 (1,56.6) | .35 | 1.15 (5,55.1) | .34 | 0.64 (5,55.2) | .67 |
| PSS fa | 0.29 (1,55.2) | .59 | 1.32 (5,63.1) | .27 | 0.70 (5,63.1) | .63 |
| PSS fr | 0.30 (1,38.6) | .59 | 0.63 (5,123.1) | .67 | 0.10 (5,123.1) | .99 |
aprimary outcome variables were followed up at post, 6, 12, 18, 24 months and five years, and the secondary variables were followed up at 24 months. The pre-measure for each outcome variable was used as covariate. ACT n = 24, TAU n = 19
MMRM mixed model repeated measures, BMI body mass index, EDE-Q eating disorder examination questionnaire, BSQ body shape questionnaire, EDI eating disorder inventory (d drive for thinness, b bulimia, Bd body dissatisfaction, Inef ineffectiveness, Perf perfectionism, interp interpersonal distrust, Intero interoceptive awareness), MADRS-S montgomery asberg depression rating scale self-report, QOLI quality of life inventory, RSE rosenberg self-esteem, WCQ ways of coping questionnaire, SCL GSI symptom checklist global severity index, PSS perceived Social Support (fa) family and (fr) friends