| All, 6-19years | Aged 6–11 years | Aged 12–19 years |  | |||
---|---|---|---|---|---|---|---|
 | n | Mean or prevalence(SE) | n | Mean or prevalence(SE) | n | Mean or prevalence(SE) | Pf |
WtHR | 12,454 | 0.49(0.00) | 6933 | 0.48(0.00) | 5521 | 0.50(0.00) | < 0.0001 |
Weight category | Â | Â | Â | Â | Â | Â | 0.04 |
  Underweight | 311 | 2.79(0.00) | 163 | 2.76(0.26) | 148 | 2.87(0.37) |  |
  Normal weight | 6977 | 57.68(0.02) | 3907 | 58.64(0.88) | 3070 | 57.80(0.87) |  |
  Overweight | 2173 | 17.30(0.01) | 1197 | 17.26(0.56) | 976 | 17.65(0.63) |  |
 Obesity | 1772 | 13.57(0.00) | 1048 | 14.43(0.48) | 724 | 12.95(0.67) |  |
 Severe obesityb | 1101 | 7.74(0.00) | 574 | 6.90(0.46) | 527 | 8.73(0.53) |  |
Overweight/obesityc | Â | Â | Â | Â | Â | Â | 0.67 |
 Yes | 5046 | 38.60(0.01) | 2819 | 38.35(0.89) | 2227 | 38.85(0.89) |  |
 No | 7408 | 61.40(0.02) | 4114 | 61.65(0.89) | 3294 | 61.15(0.89) |  |
Central obesityd |  |  |  |  |  |  | < 0.0001 |
 Yes | 4277 | 33.03(0.01) | 2180 | 30.94(0.92) | 2097 | 37.83(0.95) |  |
 No | 7663 | 62.98(0.02) | 4468 | 69.06(0.92) | 3195 | 62.17(0.95) |  |
Central obesitye | Â | Â | Â | Â | Â | Â | 0.003 |
 Yes | 2473 | 18.68(0.01) | 1500 | 20.19(0.72) | 973 | 17.18(0.82) |  |
 No | 9981 | 81.32(0.03) | 5433 | 79.81(0.72) | 4548 | 82.82(0.82) |  |