Table 1 Characteristics of subjects (N = 1,559)
Number of subjects | % or mean(SD) | |
|---|---|---|
Boys | 778 | 49.9 (1.3) |
Age (yr) | ||
Mean (SD) | 13.0 (1.3) | |
Range (yr) | 9.9 to 18.7 | |
Family structure | ||
Intact | 982 | 63.0 (1.2) |
Parents divorced/separated and reconstructed family | 391 | 25.1 (1.1) |
Single parent and other situations | 186 | 11.9 (0.8) |
Father’s occupation | ||
Manager, professional, and intermediate professional | 595 | 38.2 (1.2) |
Craftsman, tradesman, and head of firm | 314 | 20.1 (1.0) |
Service worker and clerk | 144 | 9.2 (0.7) |
Manual worker and other occupations | 389 | 25.0 (1.1) |
Not working | 117 | 7.5 (0.7) |
Insufficient family income | 276 | 17.7 (1.0) |
Low school performance (<10/20) | 128 | 8.2 (0.7) |
Last-30 day substance use | ||
Tobacco | 174 | 11.2 (0.8) |
Alcohol | 549 | 35.2 (1.2) |
Cannabis | 87 | 5.6 (0.6) |
Hard drugs | 43 | 2.8 (0.4) |
Lack of regular physical/sports activity | 182 | 11.7 (0.8) |
Having sustained violence | 832 | 53.4 (1.3) |
Victim of sexual abuse | 57 | 3.7 (0.5) |
Involvement in violence | 927 | 59.5 (1.2) |
WHOQOL ≤25th percentile value | ||
Physical health | 361 | 23.2 (1.1) |
Psychological health | 421 | 27.0 (1.1) |
Social relationships | 415 | 26.6 (1.1) |
Living environment | 392 | 25.1 (1.1) |
Body weight image | ||
Much too thin | 22 | 1.4 (0.3) |
A bit too thin | 168 | 10.8 (0.8) |
Right weight | 831 | 53.3 (1.3) |
A bit too fat | 439 | 28.2 (1.1) |
Much too fat | 74 | 4.8 (0.5) |
Non-response | 25 | 1.6 (0.3) |
Self-reported body mass index (BMIsr) | ||
Underweight | 39 | 2.5 (0.4) |
Normal weight | 908 | 58.2 (1.2) |
Overweight | 398 | 25.5 (1.1) |
Obese | 158 | 10.1 (0.8) |
Reporting refusal | 56 | 3.6 (0.5) |
Measured body mass index (BMIm) | ||
Underweight | 19 | 1.2 (0.3) |
Normal weight | 854 | 54.8 (1.3) |
Overweight | 397 | 25.5 (1.1) |
Obese | 166 | 10.6 (0.8) |
Measurement refusal | 123 | 7.9 (0.7) |
Misclassification (with change in category of BMIsr vs. BMIm) | ||
Under-reporting | 157 | 11.8 (0.8) |
Over-reporting | 75 | 6.0 (0.6) |