Table 1 Sociodemographic sample description^a

Age (3.00-17.98 years)

Mean (SE)

10.9

(0.03)

10.9

(0.06)

Sex

male

7, 445

(51.4%)

2, 714

(46.8%)

BMI group

Very underweight (< P3)

280

(1.9%)

117

(1.9%)

(Kromeyer-Hauschild

Underweight (P3- < P10)

752

(5.1%)

300

(5.2%)

et al. 2001)[25]

Normal weight

11, 357

(77.9%)

4, 491

(77.5%)

Overweight, not obese (P90-P97)

1, 306

(8.7%)

537

(8.9%)

Obese (> P97)

897

(6.4%)

370

(6.5%)

Migration status

Migrant

2, 201

(17.3%)

708

(13.9%)

Non-migrant

12, 330

(82.7%)

5, 083

(86.1%)

Health insurance

Statutory insurance

12, 813

(89.1%)

5, 119

(88.6%)

Private insurance

1, 384

(10.7%)

575

(11.3%)

Other/no insurance

23

(0.1%)

7

(0.1%)

Socioeconomic status (Winkler 1998) [31]

Low SES

4, 096

(28.0%)

1, 514

(26.4%)

Medium SES

6, 797

(45.6%)

2, 765

(46.0%)

High SES

3, 699

(26.5%)

1, 536

(27.7%)