Table 4 Correlations between maternal complications arising from vaginal delivery and potential influencing factors (univariate analysis)
From: Maternal complications and risk factors associated with assisted vaginal delivery
All (N = 3500) | Maternal underlying disease | P | Prolonged second stage of labour | P | Foetal distress | P | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
No (n = 3399) | Yes (n = 101) | No (n = 3399) | Yes (n = 101) | No (n = 3355) | Yes (n = 145) | |||||||||
Post-partum haemorrhage | 256 (7.31%) | 245 (7.21%) | 11 (10.89%) | 0.161 | 237 (6.97%) | 19 (18.81%) | < 0.001 | 237 (7.06%) | 19 (13.10%) | 0.006 | ||||
Puerperal infection | 7 (0.20%) | 6 (0.18%) | 1 (0.99%) | 0.185 | 5 (0.15%) | 2 (1.98%) | 0.016 | 6 (0.18%) | 1 (0.69%) | 0.257 | ||||
Cervical injury | 129 (3.69%) | 125 (3.68%) | 4 (3.96%) | 0.788 | 122 (3.59%) | 7 (6.93%) | 0.098 | 121 (3.61%) | 8 (5.52%) | 0.232 | ||||
Vaginal birth passage injury | 77 (2.20%) | 72 (2.12%) | 5 (4.95%) | 0.070 | 75 (2.21%) | 2 (1.98%) | 1.000 | 73 (2.18%) | 4 (2.76%) | 0.560 | ||||
Labial injury | 61 (1.74%) | 60 (1.77%) | 1 (0.99%) | 1.000 | 60 (1.77%) | 1 (0.99%) | 1.000 | 60 (1.79%) | 1 (0.69%) | 0.518 | ||||
Other | 37 (1.06%) | 36 (1.06%) | 1 (0.99%) | 1.000 | 34 (1.00%) | 3 (2.97%) | 0.089 | 32 (0.95%) | 5 (3.45%) | 0.017 | ||||
All maternal complications | 449 (12.83%) | 432 (12.71%) | 17 (16.83%) | 0.222 | 424 (12.47%) | 25 (24.75%) | < 0.001 | 421 (12.55%) | 28 (19.31%) | 0.017 | ||||
All (N = 3500) | Maternal haematocrit | P | Neonatal birthweight (g) | P | Maternal weight (kg) | P | ||||||||
Hct ≤ 33% (n = 622) | Hct > 33% (n = 2831) | AGA* (2500–4000) (n = 3233) | SGA** (1500–2499) (n = 239) | LGA*** (> 4000) (n = 28) | No | Yes | ||||||||
Post-partum haemorrhage | 256 (7.31%) | 49 (7.88%) | 205 (7.24%) | 0.582 | 235 (7.27%) | 14 (5.86%) | 7 (25.00%) | 0.001 | 68.6 ± 11.6 | 71.4 ± 12.2 | < 0.001 | |||
Puerperal infection | 7 (0.20%) | 5 (0.80%) | 2 (0.07%) | 0.003 | 7 (0.22%) | 0 (0.00%) | 0 (0.00%) | 0.749 | 68.8 ± 11.6 | 71.6 ± 12.8 | 0.519 | |||
Cervical injury | 129 (3.69%) | 22 (3.54%) | 106 (3.74%) | 0.804 | 122 (3.77%) | 4 (1.67%) | 3 (10.71%) | 0.035 | 68.8 ± 11.7 | 68.3 ± 10.5 | 0.614 | |||
Vaginal birth passage injury | 77 (2.20%) | 14 (2.25%) | 62 (2.19%) | 0.925 | 69 (2.13%) | 7 (2.93%) | 1 (3.57%) | 0.638 | 68.7 ± 11.7 | 69.9 ± 10.4 | 0.367 | |||
Labial injury | 61 (1.74%) | 10 (1.61%) | 49 (1.73%) | 0.830 | 51 (1.58%) | 9 (3.77%) | 1 (3.57%) | 0.034 | 69.2 ± 13.1 | 68.8 ± 11.6 | 0.763 | |||
Other | 37 (1.06%) | 6 (0.96%) | 30 (1.06%) | 0.833 | 32 (0.99%) | 4 (1.67%) | 1 (3.57%) | 0.259 | 68.8 ± 11.6 | 69.7 ± 13.6 | 0.609 | |||
All maternal complications | 449 (12.83%) | 89 (14.31%) | 353 (12.47%) | 0.214 | 414 (12.81%) | 27 (11.30%) | 8 (28.57%) | 0.035 | 68.6 ± 11.0 | 670.0 ± 12.0 | 0.013 | |||