60 Chapter 2 Table 7. Correlations between interventions Induction of labour Augmentation after spontaneous onset of labour Intrapartum oxytocin use Epidural* Other pharmacological pain relief* Instrumental vaginal birth* Prelabour CS Involvement paediatrician <24 hrs Induction of labour ρ = 0.01 ρ = - 0.39 ρ = 0.55 ρ = 0.56 ρ = 0.07 Augmentation after spontaneous onset of labour ρ = 0.10 ρ = 0.24 ρ = - 0.61 ρ = 0.25 Intrapartum oxytocin use ρ = - 0.49 ρ = 0.10 ρ = 0.09 ρ = 0.03 Epidural* ρ = - 0.61 ρ = - 0.50 ρ = 0.56 Other pharmacological pain relief* ρ = 0.08 ρ = - 0.22 Instrumental vaginal birth* ρ = - 0.39 Prelabour CS ρ = 0.19 ρ = 0.28 Intrapartum CS* ρ = 0.48 ρ = - 0.23 ρ = - 0.02 ρ = - 0.42 ρ = 0.52 ρ = 0.29 ρ = 0.67 ρ = 0.12 Spontaneous vaginal birth ρ = - 0.54 ρ = 0.66 ρ = 0.25 ρ = 0.20 ρ = - 0.18 ρ = - 0.72 ρ = - 0.62 ρ = - 0.06 *Measured in a group of women without prelabour CS.
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