Table 1 Description of the sample - KiGGS vs. treatment sample groups

N

6354 (unweighted)

137

% female

53.0

62.8

<0.01

% adolescents (≥ 11 year olds)

30.5

52.6

<0.001

Age: M (s.e.)

12.75 (0.03)

11.24 (0.15)

<0.001

% HRQoL proxy- report by mother

83.7

81.4

n.s.

Proxy BMI: M (s.e.)

25.28 (0.07)

27.47 (0.32)

<0.001

SES score: M (s.e.)

11.60 (0.10)

11.12 (0.34)

n.s.

BMI z-score

0.53 (0.01)

1.62 (0.01)

<0.001

% immigrants

15.6

9.5

<0.05

Weight categories:

<0.001

% normal-weight

79.1

-

% overweight

11.9

100

% obese

9.0

-

Perceived weight status: parent-reported (N=6354 KiGGS, N=137 Obeldicks light)

% proper weight

70.8

0.7

<0.001

% a bit too fat

24.7

78.8

% far too fat

4.5

20.5

Perceived weight status: self-reported (N=4490 KiGGS)

% proper weight

47.3

-

% a bit too fat

44.0

-

% far too fat

8.7

-