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Table 1 Description of study population

From: Validity and predictors of BMI derived from self-reported height and weight among 11- to 17-year-old German adolescents from the KiGGS study

 

Boys (n = 1 792)

Girls (n = 1 676)

p 1

Total (n = 3 468)

 

N

%

N

%

 

N

%

Age

    

0.435

  

   11-13

802

44.8

728

43.4

 

1 530

44.1

   14-17

990

55.2

948

56.6

 

1 938

55.9

Weight status (measured)

   

0.381

  

   Underweight

145

8.1

115

6.9

 

260

7.5

   Normal weight

1 329

74.2

1 264

75.4

 

2 593

74.8

   Overweight

318

17.7

297

17.7

 

615

17.7

Weight status (self-reported)

  

0.339

  

   Underweight

179

10.0

159

9.5

 

338

9.7

   Normal weight

1 328

74.1

1 277

76.2

 

2 605

75.1

   Overweight

285

15.9

240

14.3

 

525

15.1

Body perception

   

0.000

  

   Too thin

339

19.2

149

9.0

 

488

14.2

   Right weight

797

45.0

605

36.4

 

1 402

40.9

   Too fat

634

35.8

907

54.6

 

1 541

44.9

   Missing

22

 

15

  

37

 

Symptoms of an eating disorder

  

0.000

  

   Conspicuous

284

16.1

480

29.0

 

764

22.4

   Inconspicuous

1 476

83.9

1 176

71.0

 

2 652

77.6

   Missing

32

 

20

  

52

 

Sexual maturation

   

0.000

  

   Tanner 1

106

6.0

81

4.9

 

187

5.5

   Tanner 2-3

532

30.3

244

14.7

 

776

22.7

   Tanner 4-6

1 120

64.0

1 335

80.0

 

2 455

71.8

   Missing

34

 

16

  

50

 

Socio-economic status

   

0.934

  

   Low

473

27.3

440

26.8

 

913

27.1

   Moderate

844

48.8

801

48.8

 

1 645

48.8

   High

414

23.9

399

24.3

 

813

24.1

   Missing

61

 

36

  

97

 

Migration background

   

0.206

  

   Migrant

281

15.7

237

14.1

 

518

14.9

   Non-migrant

1 511

84.3

1 438

85.9

 

2 949

85.1

   Missing

0

 

1

  

1

 

Parental overweight

   

0.495

  

   Both

422

24.4

374

22.9

 

796

23.6

   One

790

45.6

770

47.1

 

1 560

46.3

   None

520

30.0

492

30.1

 

1 012

30.0

   Missing

60

 

40

  

100

 
  1. 1 Pearson's Chi-square Test