Distribution of mode of delivery by maternal, obstetric and infant characteristics*
| Maternal, obstetric or infant characteristic | No. of spontaneous vaginal deliveries (%) | No. of operative vaginal deliveries (%) | Std. diff† operative vaginal delivery v. spontaneous vaginal delivery | No. of cesarean deliveries (%) | Std. diff† cesarean delivery v. spontaneous vaginal delivery |
|---|---|---|---|---|---|
| Totals | 1 234 877 (63.7) | 207 675 (10.7) | – | 496 361 (25.6) | – |
| Nulliparous women | 463 702 (37.6) | 152 632 (73.5) | – | 223 438 (45.0) | – |
| Advanced maternal age (≥ 35 yr) | 38 215 (8.2) | 18 029 (11.8) | 0.12 | 39 525 (17.7) | 0.29 |
| Hypertensive disorders | 27 171 (5.9) | 9785 (6.4) | 0.02 | 22 852 (10.2) | 0.16 |
| Diabetes | 16 097 (3.5) | 6562 (4.3) | 0.04 | 15 038 (6.7) | 0.15 |
| Induction of labour | 118 773 (25.6) | 44 658 (29.3) | 0.08 | 73 761 (33.0) | 0.16 |
| Macrosomia (> 4000 g) | 35 791 (7.7) | 14 687 (9.6) | 0.07 | 37 590 (16.8) | 0.28 |
| Parous women with no previous cesarean delivery | 732 448 (59.3) | 45 983 (22.1) | – | 56 185 (11.3) | – |
| Advanced maternal age (≥ 35 yr) | 156 413 (21.4) | 12 742 (27.7) | 0.15 | 18 258 (32.5) | 0.25 |
| Hypertensive disorders | 25 371 (3.5) | 1955 (4.3) | 0.04 | 3513 (6.3) | 0.13 |
| Diabetes | 34 580 (4.7) | 2783 (6.1) | 0.06 | 5108 (9.1) | 0.17 |
| Induction of labour | 173 213 (23.6) | 13 081 (28.5) | 0.11 | 10 908 (19.4) | –0.10 |
| Macrosomia (> 4000 g) | 101 343 (13.8) | 7247 (15.8) | 0.06 | 10 318 (18.4) | 0.13 |
| Parous women with a previous cesarean delivery | 38 727 (3.1) | 9060 (4.4) | – | 216 738 (43.7) | – |
| Advanced maternal age (≥ 35 yr) | 9611 (24.8) | 2333 (25.8) | 0.02 | 68 361 (31.5) | 0.15 |
| Hypertensive disorders | 1111 (2.9) | 232 (2.6) | −0.02 | 8126 (3.8) | 0.05 |
| Diabetes | 2021 (5.2) | 441 (4.9) | −0.01 | 16 933 (7.8) | 0.11 |
| Induction of labour | 6595 (17.0) | 1416 (15.6) | −0.04 | 3692 (1.7) | −0.54 |
| Macrosomia (> 4000 g) | 4699 (12.1) | 1047 (11.6) | −0.02 | 26 223 (12.1) | 0.00 |