Table 2 Comparison of completers and non-completers at 6-month follow-up

  female

135

139

.02

.90

  male

124

125

 Age (years)

11.24

11.34

.85

.36

<.001

 Initial BMI-SDS

2.52

2.60

5.63

.02

.01

 Duration of inpatient stay (days)

39.67

39.69

<0.001

.98

<.001

  IG

130

119

1.37

.24

  CG

129

145

 Weight change during stay (BMI-SDS)

−0.35

−0.32

6.77

.01

.01

 Health-related QoL^a

67.94

66.28

2.48

.12

.01

 Weight-related QoL^a

46.40

44.08

2.24

.14

<.001

 Self-efficacy^a

55.91

57.97

2.26

.13

.01

 Psychosocial strain

6,41

6,35

<.001

.96

<.001

  healthy^a

69.46

65.00

3.06

.08

.01

  Problematic^a

48.69

47.28

.87

.35

<.001

  speed^a

35.67

34.68

.29

.59

<.001

  Structure^a

72.46

69.66

4.19

.04

.01

 Media consumption^a

12.06

11.74

.08

.78

<.001

 Activity level^a

1.06

1.05

.02

.90

<.001

 Age (years)

41.05

40.06

3.15

.08

.01

 Educational level (years of school)

10.37

10.24

.95

.33

<.001

  in relationship

149

142

.14

.71

  single

65

67

 BMI (kg/m²; self-reported)

28.91

29.46

.68

.41

<.001

  mental^a

48.71

47.71

1.18

.28

<.001

  Physical^a

50.05

49.65

.29

.59

<.001

 Self-efficacy^a

64.99

63.77

.85

.36

<.001

 Child’s support^a

73.07

71.66

2.28

.13

<.001