Logistic regression analyses between birth weight and risk of overweight/obesity according to different gender and different educational stage groups
| Variables | Model 1* | Model 2† |
| Crude OR (95% CI) | Adjusted OR (95% CI) | |
| Boys | ||
| LBW | 1.431 (0.978 to 2.123) | 1.516 (0.806 to 2.572) |
| NBW | 1.00 (reference)‡ | 1.00 (reference)‡ |
| HBW | 2.156 (1.378 to 3.262) | 2.582 (1.413 to 3.579) |
| Girls | ||
| LBW | 1.155 (0.887 to 1.617) | 1.363 (0.726 to 1.782) |
| NBW | 1.00 (reference)‡ | 1.00 (reference)‡ |
| HBW | 2.075 (1.136 to 2.871) | 2.356 (1.097 to 2.934) |
| Primary school | ||
| LBW | 0.427 (0.351 to 1.268) | 0.534 (0.297 to 1.152) |
| NBW | 1.00 (reference)‡ | 1.00 (reference)‡ |
| HBW | 2.473 (1.562 to 3.371) | 2.757 (1.483 to 3.658) |
| Middle school | ||
| LBW | 0.572 (0.285 to 1.247) | 0.691 (0.355 to 1.427) |
| NBW | 1.00 (reference)‡ | 1.00 (reference)‡ |
| HBW | 2.156 (1.322 to 2.678) | 2.317 (1.451 to 2.795) |
| High school | ||
| LBW | 1.157 (0.788 to 2.019) | 1.256 (0.915 to 1.896) |
| NBW | 1.00 (reference)‡ | 1.00 (reference)‡ |
| HBW | 1.978 (1.369 to 2.557) | 2.216 (1.532 to 2.873) |
| Overall | ||
| LBW | 1.235 (0.562 to 1.673) | 1.376 (0.691 to 1.878) |
| NBW | 1.00 (reference)‡ | 1.00 (reference)‡ |
| HBW | 2.572 (1.379 to 3.561) | 2.866 (1.563 to 3.728) |
*Model 1: the unadjusted ORs.
†Model 2: adjusted ORs for children and adolescents height, weight, BMI, delivery mode, parental age and parental educational level.
‡1.00 (reference) meant the reference group.
BMI, body mass index; HBW, high birth weight; LBW, low birth weight; NBW, normal birth weight.