Variables | AC<90th centile | AC⩾90th centile | p Value |
N = 172 (66%) | N = 87 (34%) | NS | |
Mode of delivery | NS | ||
Vaginal | 121 (70%) | 53 (61%) | |
Emergency caesarean section | 51 (30%) | 34 (39%) | |
Primary postpartum haemorrhage (⩾500 ml) | 0.002 | ||
No | 141 (82%) | 56 (64%) | |
Yes | 31 (18%) | 31 (36%) | |
Arterial pH (documented in 110 cases) | NS | ||
⩾7.1 | 65 (98%) | 43 (98%) | |
<7.1 | 1 (2%) | 1 (2%) | |
Apgar score (5 min) | NS | ||
>7 | 169 (98%) | 83 (95%) | |
⩽7 | 3 (2%) | 4 (5%) | |
Shoulder dystocia | N = 121 | N = 53 | 0.028 |
(of 174 cases delivered vaginally) | 119 (98%) | 48 (91%) | |
No | 2 (2%) | 5 (9%) | |
Yes | |||
3rd/4th degree perineal tear (of 174 cases delivered vaginally) | N = 121 | N = 53 | NS |
No | 121 (100%) | 51 (96%) | |
Yes | 0 (0%) | 2 (4%) |
NS, not significant.