| Characteristic | Provider; no. (%) of women* | |
|---|---|---|
| Family physician n = 217 870 | Obstetrician n = 558 429 | |
| Cesarean delivery | 24 830 (11.4) | 192 360 (34.4) |
| Age, mean ± SD, yr | 28.2 ± 5.6 | 29.6 ± 5.7 |
| Income, mean ± SD, $ | 26 821 ± 8827 | 27 777 ± 9250 |
| % of women in census subdivision with at least some high school, mean ± SD | 81.7 ± 14.1 | 84.0 ± 12.5 |
| Urban residence† | 151 459 (69.5) | 474 695 (85.0) |
| Hospital level | ||
| 3 | 53 901 (24.7) | 150 098 (26.9) |
| 2 | 77 640 (35.6) | 298 269 (53.4) |
| 1 | 85 642 (39.3) | 110 051 (19.7) |
| Prior cesarean delivery | 11 229 (5.2) | 89 265 (16.0) |
| Type 1 diabetes | 89 (0.04) | 1945 (0.3) |
| Type 2 diabetes | 167 (0.1) | 2201 (0.4) |
| Gestational diabetes | 7280 (3.3) | 29 059 (5.2) |
| Eclampsia | 96 (0.04) | 374 (0.1) |
| Placental abruption | 176 (0.1) | 1111 (0.2) |
| Premature rupture of membranes | 697 (0.3) | 3660 (0.6) |
| Placenta previa | 362 (0.2) | 3065 (0.5) |
| Genital herpes | 236 (0.1) | 848 (0.2) |
| Gestational age, mean ± SD, wk | 39.3 ± 2.0 | 38.8 ± 2.3 |
| Birth weight, mean ± SD, g | 3463 ± 501 | 3375 ± 582 |
| Congenital anomaly | 4658 (2.1) | 18 779 (3.4) |
*Except where noted otherwise.
†Census agglomeration or census metropolitan area.