Table 3 Correlation between maternal complications, vaginal delivery method and gestational age at delivery (univariate analysis)
From: Maternal complications and risk factors associated with assisted vaginal delivery
Complications | All (N = 3500) | Vaginal delivery n (%) | P | Gestational age at delivery (wk) n (%) | P | ||||
|---|---|---|---|---|---|---|---|---|---|
Spontaneous (n = 3271) | Vacuum extraction (n = 221) | Forceps assisting/ extraction (n = 12) | Breech delivery (n = 6) | < 37 (n = 104) | ≥ 37 (n = 3396) | ||||
Post-partum haemorrhage | 256 (7.31%) | 225 (6.88%) | 27 (12.80%) | 4 (33.33%) | 0 (0.00%) | < 0.001* | 6 (5.77%) | 250 (7.36%) | 0.539 |
Puerperal infection | 7 (0.20%) | 5 (0.15%) | 2 (0.95%) | 0 (0.00%) | 0 (0.00%) | 0.097 | 0 (0.00%) | 7 (0.21%) | 1.000 |
Cervical injury | 129 (3.69%) | 118 (3.61%) | 11 (5.21%) | 0 (0.00%) | 0 (0.00%) | 0.545 | 2 (1.92%) | 127 (3.74%) | 0.591 |
Vaginal passage injury | 77 (2.20%) | 70 (2.14%) | 7 (3.32%) | 0 (0.00%) | 0 (0.00%) | 0.640 | 2 (1.92%) | 75 (2.21%) | 1.000 |
Labial injury | 61 (1.74%) | 59 (1.80%) | 2 (0.95%) | 0 (0.00%) | 0 (0.00%) | 0.761 | 3 (2.88%) | 58 (1.71%) | 0.428 |
Rectal, ligament or pelvic joint injury | 37 (1.06%) | 29 (0.89%) | 8 (3.79%) | 0 (0.00%) | 0 (0.00%) | 0.001* | 1 (0.96%) | 36 (1.06%) | 1.000 |
All maternal complications | 449 (12.83%) | 405 (12.38%) | 40 (18.96%) | 4 (33.33%) | 0 (0.00%) | 0.004 * | 13 (12.50%) | 436 (12.84%) | 0.919 |