Table 3: Delivery and neonatal outcome.

Intrapartum factors
Non-acidaemia
pH > 7.20 (N = 294)
Acidaemia
pH < 7.20 (N = 294)
Missing %p-valueOdds ratios (95% CI intervals)

Induction93 (32.3%)90 (30.8%)1.36%0.7030.93 (0.69 - 1.37)

Epidural129 (44.5%)135 (46.4%)1.19%0.6441.08 (0.78 - 1.50)

Meconium staining64 (30.3%)71 (34.0%)28.57%0.4251.18 (0.78 - 1.78)

FBS (Foetal blood sample)47 (16.3%)46 (15.9%)1.70%0.9100.98 (0.63 - 1.52)

Pyrexia30 (61.2%)21 (28.0%)80.10%<0.0010.23 (0.12 - 0.53)

Continuous intrapartum CTG239 (83.6%)218 (76.8%)3.1%0.0420.65 (0.43 - 0.99)

Median duration of labour in minutes (interquartile range)811 (279-722)705 (233-636)19.00%0.021

Syntocinon183 (64.7%)170 (60.9%)0.00%0.3600.85 0.61 - 1.20

Method of deliveryUnassisted45 (15.5%)64 (22.0%)0.00%REFERENCE
Instrumental83 (28.5%)131 (45.0%)0.6641.11 (0.69 - 1.78)
Emergency caesarean160 (55.0%)95 (32.6%)<0.0010.42 (0.26 - 0.66)
Elective caesarean3 (1.0%)1 (0.3%)0.2150.23 (0.02 - 2.33)

Median APGAR at 1 minute (interquartile range)8 (7-9)7 (6-9)1.28%<0.001

Median APGAR at 5 minutes (interquartile range9 (9-9)9 (9-9)1.28%0.025

NICU admission26 (9.1%)25 (8.7%)2.7%0.8630.95 (0.54 - 1.69)

Mean birthweight in grams ± (SD)3201 (512)3042 (481)0.0%0.138

Intrapartum and postpartum analysis. Binary logistic regression was performed for categorical variables. Independent t-test was performed for birth weight and Mann-Whitney U test was performed for duration of labour and APGAR scores.