Parametera NNU Admission (N=171) No NNU admission (N=1494) p-valueb OR (95% CI)c p-valuec
Group
Land birth
142 (83.04%)
1123 (75.17%)
0.022
-ref-
-
Water birth/WWI
29 (16.96%)
371 (24.83%)
0.70 (0.40, 1.18)
0.200
Epidural 89 (52.05%) 432 (28.92%) < 0.001 1.58 (1.02, 2.44) 0.042
Previous Birth Mode
No previous birth/ Caesarean section 114 (66.67%) 671 (44.94%) <0.001 -ref- -
Spontaneous vaginal birth/ Assisted vaginal birth 57 (33.33%) 822 (55.06%) 0.55 (0.35, 0.85) 0.008
Labour onset
Spontaneous 98 (57.31%) 1029 (68.88%) 0.002 -ref- -
Induced 73 (42.69%) 465 (31.12%) 1.78 (1.19, 2.65) 0.005
Maternal age 30.00 (26.00, 34.00) 31.00 (27.00, 35.00) 0.187 0.99 (0.96, 1.03) 0.745
Maternal BMI 23.90 (21.00, 27.50) 24.00 (21.40, 27.00) 0.618 0.98 (0.94, 1.03) 0.403
Total length of labourd 369.50 (227.25, 628.50) 254.00 (152.00, 425.50) <0.001 1.00 (1.00, 1.00) 0.015