Variables | Total N | Overweight n (%) | Crude | Adjusteda | ||
---|---|---|---|---|---|---|
 |  |  | OR | 95% CI | OR | 95% CI |
Number of siblings (%) | ||||||
 0 (only child) | 423 | 95 (22.5) | 1.00 |  | 1.00 |  |
 1 | 2215 | 360 (16.3) | 0.67 | 0.52-0.86 | 0.62 | 0.46-0.83 |
 2 or more | 1388 | 201 (14.5) | 0.59 | 0.45-0.77 | 0.50 | 0.36-0.68 |
 |  |  | P for trend < 0.001 |  | P for trend < 0.001 |  |
Birth order (%) | ||||||
 Only child | 423 | 95 (22.5) | 1.82 | 1.29-2.55 | 2.13 | 1.45-3.14 |
 Oldest child | 1617 | 230 (14.2) | 1.04 | 0.78-1.39 | 1.01 | 0.73-1.40 |
 Youngest child | 1477 | 261 (17.7) | 1.35 | 1.01-1.79 | 1.56 | 1.13-2.16 |
 Middle child | 509 | 70 (13.8) | 1.00 |  | 1.00 |  |