Table 1.
Anthropometric characteristics (mean and SD) by sex and body weight level.
| Boys |
Girls |
|||||
|---|---|---|---|---|---|---|
| normal weight (n = 138) | overweight (n = 43) | p valuea | normal weight (n = 152) | overweight (n = 65) | p valuea | |
| Age at baseline, years | 9.7 ± 0.4 | 9.5 ± 0.4 | 0.02* | 9.6 ± 0.4 | 9.6 ± 0.4 | 0.66 |
| Height at baseline, cm | 138.9 ± 6.4 | 142.4+5.6 | 0.0012 | 137.7 ± 6.5 | 139.5 ± 5.5 | 0.06 |
| Height at follow-up, cm | 160.0 ± 8.5 | 162.8 ± 7.3 | 0.05 | 159.2 ± 7.2 | 160.4 ± 5.8 | 0.24 |
| Weight at baseline, kg | 31.5 ± 4.2 | 41.3 ± 4.9 | <0.0001 | 30.3 ± 4.0 | 39.7 ± 5.9 | <0.0001 |
| Weight at follow-up, kg | 47.3 ± 7.5 | 61.0 ± 8.8 | <0.0001 | 46.9 ± 6.8 | 58.2 ± 8.8 | <0.0001 |
| Change in body weight, kg | 15.7 ± 4.9 | 19.7 ± 6.0 | 0.0004 | 16.6 ± 4.1 | 18.6 ± 6.0 | <0.0001 |
| BMI at baseline, kg/m2 | 16.3 ± 1.2 | 20.3 ± 1.6 | <0.0001 | 15.9 ± 1.3 | 20.3 ± 2.0 | <0.0001 |
| BMI at follow-up, kg/m2 | 18.4 ± 1.7 | 23.0 ± 2.8 | <0.0001 | 18.4 ± 1.8 | 22.6 ± 2.8 | <0.0001 |
| Z-score at baseline | 0.0 ± 0.7 | 1.7 ± 0.5 | <0.0001 | –0.2 ± 0.8 | 1.7 ± 0.5 | <0.0001 |
| Z-score at follow-up | 0.1 ± 0.8 | 1.7 ± 0.7 | <0.0001 | 0.2 ± 0.8 | 1.6 ± 0.7 | <0.0001 |
a
p value for trend based on mean value in each stratum.
*
Anthropometric characteristics for the boys were also significantly different after adjustment for the noted age difference.