Maternal age (years) |
Mean (SD) | 29.4 (5.0) | 30.2 (5.0) | 10−3 |
Median (25th, 75th pc) | 29.3 (26.0, 32.4) | 30.2 (26.6, 33.8) |
<20 | 34 (2) | 20 (1) |
20 to <30 | 789 (53) | 831 (47) |
30 to <40 | 626 (42) | 866 (49) |
≥40 | 34 (2) | 41 (2) |
BMI (kg/m2) |
Mean (SD) | 22.5 (4.1) | 22.4 (3.96) | 0.3 |
Median (25th, 75th pc) | 21.5 (19.7, 24.1) | 21.5 (19.7, 24.2) |
<18 | 93 (7) | 81 (5) |
18 to <25 | 960 (73) | 1104 (74) |
25 to <30 | 187 (14) | 223 (15) |
≥30 | 76 (6) | 79 (5) |
MD | 167 (11)‡ | 271 (15)‡ |
Primiparous | 1044 (70) | 762 (43) | 10−3 |
Previous PPH | 53 (4) | 34 (2) | 10−2 |
Previous uterine curettage | 153 (10) | 179 (10) | 0.9 |