| Weight (kg) mean ± SD | Height (cm) mean ± SD | BMI (kg/m2) mean ± SD | Overweight % |
---|---|---|---|---|
Total group (n = 3379) | ||||
 Measured value | 54.37 ± 13.60 | 163.7 ± 10.85 | 20.1 ± 3.52 | 17.08 |
 Self-reported value | 52.94 ± 13.22* | 163.1 ± 11.40* | 19.7 ± 3.38* | 13.50** |
 Mean difference | −1.44 ± 3.98 | −0.5 ± 3.48 | −0.4 ± 1.65 |  |
Stratification by gender | Â | Â | ||
 Boys (n = 1594) |  |  |  | |
  Measured value | 56.55 ± 14.97 | 166.3 ± 12.41 | 20.2 ± 3.60 | 19.51 |
  Self-reported value | 55.21 ± 14.51* | 165.6 ± 13.06* | 19.9 ± 3.41* | 16.38** |
  Mean difference | −1.34 ± 4.14 | −0.8 ± 3.99 | −0.3 ± 1.70 |  |
 Girls (n = 1785) |  |  |  | |
  Measured value | 52.43 ± 11.92 | 161.3 ± 8.59 | 20.0 ± 3.44 | 14.85 |
  Self-reported value | 50.91 ± 11.57* | 161.0 ± 9.16* | 19.5 ± 3.35* | 10.92** |
  Mean difference | −1.52 ± 3.83 | −0.3 ± 2.94 | −0.5 ± 1.60 |  |
Stratification by age and gender | Â | |||
 Age 11, boys (n = 479) |  |  | ||
  Measured value | 45.20 ± 10.69 | 153.1 ± 7.57 | 19.1 ± 3.39 | 23.38 |
  Self-reported value | 43.32 ± 9.46* | 152.2 ± 8.84* | 18.6 ± 3.16* | 19.00** |
  Mean difference | −1.88 ± 3.67 | −0.9 ± 5.01 | −0.5 ± 1.82 |  |
 Age 11, girls (n = 592) |  |  | ||
  Measured value | 44.61 ± 10.49 | 153.8 ± 7.27 | 18.7 ± 3.34 | 17.74 |
  Self-reported value | 42.51 ± 9.21* | 152.9 ± 7.89* | 18.1 ± 2.96* | 12.33** |
  Mean difference | −2.10 ± 4.09 | −1.0 ± 3.38 | −0.6 ± 1.78 |  |
 Age 13, boys (n = 560) |  |  | ||
  Measured value | 56.55 ± 13.51 | 166.8 ± 8.85 | 20.2 ± 3.77 | 20.00 |
  Self-reported value | 54.96 ± 12.56* | 165.8 ± 9.40* | 19.9 ± 3.49* | 16.43** |
  Mean difference | −1.59 ± 4.61 | −1.0 ± 3.89 | −0.4 ± 1.84 |  |
 Age 13, girls (n = 573) |  |  | ||
  Measured value | 54.05 ± 10.86 | 163.3 ± 6.34 | 20.2 ± 3.46 | 15.53 |
  Self-reported value | 52.45 ± 10.26* | 163.0 ± 6.88 | 19.7 ± 3.45* | 11.69** |
  Mean difference | −1.59 ± 4.26 | −0.2 ± 3.11 | −0.5 ± 1.87 |  |
 Age 15, boys (n = 555) |  |  | ||
  Measured value | 66.34 ± 12.41 | 177.3 ± 6.61 | 21.0 ± 3.34 | 15.86 |
  Self-reported value | 65.71 ± 11.69* | 176.9 ± 7.16* | 21.0 ± 3.15 | 14.05 |
  Mean difference | −0.63 ± 3.91 | −0.4 ± 2.94 | −0.1 ± 2.10 |  |
 Age 15, girls (n = 620) |  |  | ||
  Measured value | 58.43 ± 9.98 | 166.7 ± 6.26 | 21.0 ± 3.13 | 11.45 |
  Self-reported value | 57.50 ± 9.71* | 166.8 ± 6.19 | 20.6 ± 3.12* | 8.87** |
  Mean difference | −0.93 ± 3.82 | 0.1 ± 2.11 | −0.4 ± 1.47 |  |