54 Chapter 2 GR FR DR OV FL Prelabour CS Crude OR [99% CI] aOR* [99% CI] 1.01 [0.94-1.09] 1.05 [0.98-1.13] 1.03 [0.96-1.10] 1.05 [0.98-1.12] 0.97 [0.90-1.05] 0.98 [0.90-1.06] 1.00 [0.95-1.05] 0.98 [0.93-1.03] 0.89 [0.82-0.96] 0.88 [0.81-0.96] Intrapartum CS (women without prelabour CS) Crude OR [99% CI] aOR* [99% CI] 1.12 [1.06-1.19] 1.13 [1.06-1.20] 1.08 [1.02-1.14] 1.15 [1.08-1.22] 0.97 [0.90-1.04] 1.03 [0.96-1.11] 0.93 [0.89-0.97] 0.95 [0.91-1.00] 0.98 [0.92-1.04] 0.99 [0.92-1.06] Involvement paediatrician <24 hrs Crude OR [99% CI] aOR* [99% CI] 1.30 [1.25-1.34] 1.30 [1.26-1.35] 0.92 [0.89-0.95] 0.95 [0.92-0.98] 0.98 [0.84-1.02] 1.01 [0.97-1.05] 0.87 [0.84-0.89] 0.88 [0.85-0.90] 0.88 [0.84-0.91] 0.89 [0.86-0.93] Women in midwife-led care at onset of labour, n = 328,009 Total n 10,013 12,901 7,884 23,922 8,942 Augmentation of labour after spontaneous onset Crude OR [99% CI] aOR* [99% CI] 0.98 [0.93-1.04] 0.98 [0.92-1.05] 0.86 [0.82-0.91] 0.94 [0.89-0.995] 1.02 [0.95-1.08] 1.11 [1.03-1.19] 0.78 [0.74-0.81] 0.80 [0.76-0.83] 1.24 [1.17-1.31] 1.20 [1.13-1.29] Epidural Crude OR [99% CI] aOR* [99% CI] 1.18 [1.09-1.28] 1.19 [1.09-1.29] 0.79 [0.73-0.86] 0.87 [0.79-0.95] 0.41 [0.36-0.47] 0.43 [0.37-0.49] 1.07 [1.01-1.13] 1.17 [1.10-1.24] 0.49 [0.44-0.55] 0.43 [0.37-0.49] Other pharmacological pain relief Crude OR [99% CI] aOR* [99% CI] 0.77 [0.71-0.84] 0.78 [0.72-0.85] 0.85 [0.79-0.91] 0.91 [0.85-0.98] 1.68 [1.56-1.80] 1.80 [1.67-1.94] 0.67 [0.64-0.71] 0.69 [0.65-0.74] 2.14 [2.01-2.28] 2.03 [1.89-2.17] Instrumental vaginal birth Crude OR [99% CI] aOR* [99% CI] 1.13 [1.04-1.22] 1.11 [1.02-1.22] 0.99 [0.92-1.07] 1.06 [0.98-1.15] 1.01 [0.92-1.11] 1.05 [0.95-1.17] 1.04 [0.98-1.10] 1.10 [1.03-1.17] 1.04 [0.95-1.14] 1.09 [0.99-1.21] Intrapartum CS Crude OR [99% CI] aOR* [99% CI] 1.18 [1.06-1.31] 1.17 [1.05-1.31] 1.16 [1.05-1.27] 1.26 [1.14-1.39] 0.85 [0.74-0.97] 0.90 [0.78-1.05] 0.92 [0.85-0.99] 0.97 [0.89-1.05] 1.10 [0.97-1.23] 1.07 [0.94-1.23] Involvement paediatrician <24 hrs Crude OR [99% CI] aOR* [99% CI] 1.26 [1.19-1.33] 1.28 [1.21-1.35] 0.94 [0.89-0.98] 0.99 [0.94-1.04] 0.92 [0.86-0.98] 0.95 [0.88-1.01] 0.83 [0.80-0.86] 0.84 [0.81-0.88] 0.96 [0.91-1.02] 0.94 [0.88-1.01]
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