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Table 4 Group, time and interaction effects from the MMRM analysis

From: A randomised trial of Acceptance and Commitment Therapy for Anorexia Nervosa after daycare treatment, including five-year follow-up

  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
  1. 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
  2. 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