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Table 1 Means and standard deviations of pre- and post-scores of the questionnaire measures and the Photo Distortion Technique in the intervention group and in the control group

From: Effects of a cognitive-behavioral exposure-based body image therapy for overweight females with binge eating disorder: a pilot study

 

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

          
  1. Note: Mean score (M), standard deviation (SD), F-score (F), degree of freedom (df), probability level (p), effect size (d)