Table 2.
Pregnancy outcomes according to maternal risk factors.
| Overall (n = 1921) |
Maternal Age | Body Mass Index | Smoker | |||||
|---|---|---|---|---|---|---|---|---|
| Less Than 40 (n = 1776) | 40 or More (n = 145) | <18 (n = 29) |
18 to 35 (n = 1802) |
≥35 (n = 90) |
No (n = 1647) |
Yes (n = 274) |
||
| Neonatal outcome, n (%) | ||||||||
| Live birth | 1916 (99.7%) | 1771 (99.7%) | 145 (100%) | 29 (100%) | 1797 (99.7%) | 90 (100%) | 1643 (99.8%) | 273 (99.6%) |
| Neonatal death | 2 (0.1%) | 2 (0.1%) | 0 | 0 | 2 (0.1%) | 0 | 2 (0.1%) | 0 |
| Stillbirth | 3 (0.2%) | 3 (0.2%) | 0 | 0 | 3 (0.2%) | 0 | 2 (0.1%) | 1 (0.4%) |
| Gestational age at birth in weeks, median (IQR) | 39.0 | 39.0 | 39.0 | 39.0 | 39.0 | 39.0 | 39.0 | 39.0 |
| (38.0, 40.0) | (38.0, 40.0) | (38.0, 40.0) | (38.0, 40.0) | (38.0, 40.0) | (38.0, 40.0) | (38.0, 40.0) | (38.0, 40.0) | |
| Preterm birth n (%) | 118 (6.1%) | 108 (6.1%) | 10 (6.9%) | 4 (13.8%) | 108 (6.0%) | 6 (6.7%) | 104 (6.3%) | 14 (5.1%) |
| Labor onset n (%) | ||||||||
| Spontaneous | 967 (50.3%) | 899 (50.6%) | 68 (46.9%) | 11 (37.9%) | 927 (51.4%) | 29 (32.2%) | 840 (51.0%) | 127 (46.4%) |
| Induced | 817 (42.5%) | 753 (42.4%) | 64 (44.1%) | 14 (48.3%) | 749 (41.6%) | 54 (60.0%) | 684 (41.5%) | 133 (48.5%) |
| No labour | 137 (7.1%) | 124 (7.0%) | 13 (9.0%) | 4 (13.8%) | 126 (7%) | 7 (7.8%) | 123 (7.5%) | 14 (5.1%) |
| Mode of delivery n (%) | ||||||||
| Elective cesarean section | 93 (4.8%) | 84 (4.7%) | 9 (6.2%) | 3 (10.3%) | 84 (4.7%) | 6 (6.7%) | 83 (5.0%) | 10 (3.6%) |
| Emergency cesarean section | 288 (15.0%) | 261 (14.7%) | 27 (18.6%) | 1 (3.4%) | 265 (14.7%) | 22 (24.4%) | 244 (14.8%) | 44 (16.1%) |
| Instrumental | 326 (17.0%) | 304 (17.1%) | 22 (15.2%) | 4 (13.8%) | 311 (17.3%) | 11 (12.2%) | 278 (16.9%) | 48 (17.5%) |
| Vaginal | 1214 (63.2%) | 1127 (63.5%) | 87 (60.0%) | 21 (72.4%) | 1142 (63.4%) | 51 (56.7%) | 1042 (63.3%) | 172 (62.8%) |
| Birth weight in grams, | 3200 | 3200 | 3200 | 3030 | 3200 | 3500 | 3210 | 3080 |
| median (IQR) | (2900, 3500) | (2910, 3500) | (2790, 3510) | (2600, 3220) | (2900, 3500) | (3220, 3770) | (2920, 3520) | (2760, 3360) |
| Birth weight percentile | 31.5 | 31.7 | 29.8 | 15.9 | 31.5 | 61.9 | 33.7 | 20.5 |
| Median (IQR) | (12.6, 59.0) | (12.9, 58.8) | (9.75, 59.8) | (2.85, 45.6) | (12.6, 58.8) | (30.2, 79.1) | (14.0, 61.0) | (6.72, 42.1) |
| Birth weight <10th percentile, n (%) | 413 (21.5%) | 375 (21.1%) | 38 (26.2%) | 14 (48.3%) | 385 (21.4%) | 14 (15.6%) | 326 (19.8%) | 87 (31.8%) |
| Birth weight <3rd percentile, n (%) | 186 (9.7%) | 170 (9.6%) | 16 (11.0%) | 9 (31.0%) | 174 (9.7%) | 3 (3.3%) | 143 (8.7%) | 43 (15.7%) |
| Birth weight >95th percentile, n (%) | 38 (2.0%) | 34 (1.9%) | 4 (2.8%) | 0 (0%) | 31 (1.7%) | 7 (7.8%) | 37 (2.2%) | 1 (0.4%) |
| Developed preeclampsia n(%) | 82 (4.3%) | 69 (3.9%) | 13 (9.0%) | 1 (3.4%) | 73(4.1%) | 8 (8.9%) | 73 (4.4%) | 9 (3.3%) |
| Developed pregnancy hypertension n (%) | 43 (2.2%) | 38 (2.1%) | 5 (3.4%) | 0 | 36 (2.0%) | 7 (7.8%) | 36 (2.2%) | 7 (2.6%) |
| Developed gestational diabetes n (%) | 455 (23.7%) | 406 (22.9%) | 49 (33.8%) | 3 (10.3%) | 408 (22.6%) | 44 (48.9%) | 386 (23.4%) | 69 (25.2%) |
Results are expressed as the median (interquartile rage, IQR) and n and percentage (%) as required.