| Boys (n = 1 792) | Girls (n = 1 676) | p 1 | Total (n = 3 468) | |||
---|---|---|---|---|---|---|---|
 | N | % | N | % |  | N | % |
Age | Â | Â | Â | Â | 0.435 | Â | Â |
   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) | Â | Â | Â | 0.381 | Â | Â | |
   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) | Â | Â | 0.339 | Â | Â | ||
   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 | Â | Â | Â | 0.000 | Â | Â | |
   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 | Â | Â | 0.000 | Â | Â | ||
   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 | Â | Â | Â | 0.000 | Â | Â | |
   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 | Â | Â | Â | 0.934 | Â | Â | |
   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 | Â | Â | Â | 0.206 | Â | Â | |
   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 | Â | Â | Â | 0.495 | Â | Â | |
   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 |  |