| | Characteristics | Total | RU ≥ 150 ml | RU < 150 ml | |
| | Primiparity, n (%) | 55 (35.5) | 10 (83.3) | 45 (31.5) | 0.001 | | Gestational age at delivery | 39.2 (38.1, 40.0) | 39.2 (38.1, 40.0) | 39.2 (38.1, 40.0) | 0.727 | | Duration of active phase of labour, minutes | 150 (75, 240) | 375 (152, 525) | 135 (60, 240) | 0.001 | | Duration of second stage, minutes | 9 (5,18) | 30 (9.5, 53.8) | 8 (5, 17) | 0.007 | | Oxytocin augmentation, n (%) | 50 (32.3) | 6 (50.0) | 44 (30.8) | 0.203 | | Duration of oxytocin augmentation, hours | 3.5 (1.5, 6.0) | 5.5 (2.9, 6.8) | 3.2 (1.5, 5.9) | 0.142 | | Epidural analgesia, n (%) | 17 (11.0) | 5 (41.7) | 12 (8.4) | 0.004 | | Duration of epidural analgesia, hours | 5.0 (3.7, 7.0) | 5.0 (4.5, 7.3) | 5.5 (2.4, 7.0) | 0.422 | | Episiotomy, n (%) | 74 (47.7) | 12 (100) | 62 (43.4) | <0.001 | | Instrumental delivery | 17 (11.0) | 5 (41.7) | 12 (8.4) | 0.004 | | Type of instrumental delivery, n (%) | | | (1) Vacuum | 16 (94.1) | 4 (80.0) | 12 (100.0) | 0.294 | | (2) Forceps | 1 (5.9) | 1 (20.0) | 0 | | | Birth weight, grams | 3060 (2800, 3270) | 3170 (3030, 3357) | 3050 (2770, 3270) | 0.098 | | Estimated blood loss, ml | 300 (200, 300) | 300 (300, 300) | 300 (200, 300) | 0.017 | | Perineal pain score | 2.0 (1.0, 3.0) | 3.5 (3.0, 5.8) | 2 (1.0, 3,0) | <0.001 |
|
|
