Intervention group | Control group | Time | Group | Time × group | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Measure | M | SD | M | SD | F | df | p | F | df | p | F | df | p | |
Body Mass Index (kg/m2) | ||||||||||||||
Pre | 31.98 | 4.70 | 36.80 | 5.08 | .098 | 1 | .757 | 5.26 | 1 | .031 | 1.83 | 1 | .189 | |
Post | 31.89 | 4.77 | 37.38 | 5.13 | ||||||||||
d | −.01 | .11 | ||||||||||||
Eating Disorder Inventory (EDI-2) | ||||||||||||||
Drive for thinness | Pre | 4.59 | .81 | 4.39 | .79 | 11.03 | 1 | .002 | 3.05 | 1 | .090 | 15.34 | 1 | <.001 |
Post | 3.2 | .80 | 4.32 | .92 | ||||||||||
d | −1.72 | −.08 | ||||||||||||
Bulimia | Pre | 3.53 | .57 | 3.22 | .73 | 7.95 | 1 | .008 | .015 | 1 | .905 | 4.09 | 1 | .052 |
Post | 2.69 | .66 | 3.06 | .98 | ||||||||||
d | −1.36 | −.18 | ||||||||||||
Body dissatisfaction | Pre | 5.31 | .65 | 5.41 | .58 | 8.81 | 1 | .006 | 8.36 | 1 | .007 | 16.71 | 1 | <.001 |
Post | 4.32 | .67 | 5.40 | .71 | ||||||||||
d | −1.5 | −.01 | ||||||||||||
Eating Disorder Examination–Questionnaire (EDE-Q) | ||||||||||||||
Restraint | Pre | 2.54 | 1.24 | 1.82 | 1.03 | .25 | 1 | .618 | 1.91 | 1 | .176 | .92 | 1 | .344 |
Post | 2.05 | 1.36 | 1.76 | 1.04 | ||||||||||
d | −.37 | −.05 | ||||||||||||
Eating concern | Pre | 2.52 | 1.04 | 2.27 | 1.07 | 11.78 | 1 | .002 | 1.02 | 1 | .32 | 9.18 | 1 | .005 |
Post | 1.20 | .99 | 2.30 | 1.31 | ||||||||||
d | −1.3 | .02 | ||||||||||||
Weight concern | Pre | 3.77 | 1.09 | 3.81 | 1.04 | 7.83 | 1 | .009 | 4.59 | 1 | .04 | 6.56 | 1 | .015 |
Post | 2.42 | 1.24 | 3.85 | 1.21 | ||||||||||
d | −1.15 | .03 | ||||||||||||
Shape concern | Pre | 4.45 | 1.00 | 4.43 | 1.14 | 14.3 | 1 | .001 | 9.46 | 1 | .004 | 22.96 | 1 | <.001 |
Post | 2.49 | 1.01 | 4.48 | 0.97 | ||||||||||
d | −1.95 | .04 | ||||||||||||
Body Checking Questionnaire (BCQ) | ||||||||||||||
General Score | Pre | 31.53 | 18.5 | 22.21 | 11.8 | 2.15 | 1 | .152 | .4 | 1 | .529 | 4.63 | 1 | .039 |
Post | 23.13 | 10.9 | 22.42 | 16.2 | ||||||||||
d | −.55 | .01 | ||||||||||||
Rosenberg Self-Esteem Scale (RSES) | ||||||||||||||
General Score | Pre | 29.00 | 6.48 | 25.73 | 6.76 | 3.49 | 1 | .071 | 6.03 | 1 | .02 | 13.89 | 1 | .001 |
Post | 34.46 | 5.93 | 25.57 | 7.26 | ||||||||||
d | .87 | −.02 | ||||||||||||
Beck Depression Inventory (BDI) | ||||||||||||||
General Score | Pre | 12.93 | 7.60 | 16.36 | 7.63 | 5.49 | 1 | .026 | 5.03 | 1 | .032 | 7.28 | 1 | .011 |
Post | 6.40 | 7.15 | 16.52 | 9.64 | ||||||||||
d | −.88 | −.01 | ||||||||||||
Photo Distortion Technique | ||||||||||||||
“Real” body dimensions | Pre | 103 | 8 | 109 | 13 | .79 | 1 | .381 | 6.12 | 1 | .019 | 1.5 | 1 | .229 |
Post | 102 | 10 | 114 | 16 | ||||||||||
d | −.1 | .34 | ||||||||||||
“Felt” body dimensions | Pre | 108 | 12 | 114 | 22 | .061 | 1 | .807 | 2.19 | 1 | .149 | 0.227 | 1 | .637 |
Post | 103 | 11 | 112 | 21 | ||||||||||
d | −.43 | −.09 | ||||||||||||
“Ideal” body dimensions | Pre | 78 | 10 | 79 | 9 | 1.63 | 1 | .211 | 0.52 | 1 | .476 | 3.64 | 1 | .066 |
Post | 86 | 7 | 82 | 6 | ||||||||||
d | .92 | .39 |