Percentage receiving obstetric care and adjusted relative risks
| BMI (kg/m2) | Nulliparous (n = 8795) | Multiparous (n = 7857) | ||||
|---|---|---|---|---|---|---|
| % | RR | (95%CI) | % | RR | (95%CI) | |
| <18.5 | 45.6 | 0.94 | (0.82–1.09) | 14.6 | 0.87 | (0.57–1.31) |
| 18.5–24.9 | 52.9 | 1 | - | 17.7 | 1 | - |
| 25–29.9 | 55.7 | 1.04 | (0.99–1.08) | 20.2 | 1.16 | (1.02–1.32) |
| 30–35 | 60.2 | 1.12 | (1.05–1.18) | 21.3 | 1.22 | (1.05–1.42) |
| 35+ | 57.1 | 1.08 | (0.99–1.18) | 21.0 | 1.24 | (0.97–1.59) |