Diverse definitions of prolonged labour and its consequences with sometimes subsequent inappropriate treatment

Table 3 Labour and birth outcome in women with prolonged labour with and without diagnosis and in women with normal labour with and without oxytocin augmentation

	Prolonged labour^awithout diagnosis	Prolonged labour^awith diagnosis	Crude odds ratio	Adjusted odds ratio^c	Normal labour^awithout oxytocin augmentation	Normal labour^awith oxytocin augmentation	Crude odds ratio	Adjusted odds ratio^c
	n = 67	n = 113			n = 472	n = 177
	n (%)	n (%)	(95% CI)	(95% CI)	n (%)	n (%)	(95% CI)	(95% CI)
Labour augmentation
Yes	62 (92.5)	105 (92.9)	0.5 (0.3–3.02)	0.99 (0.31-3.2)	0	177 (100)	Not calculated
No	5 (7.5)	8 (7.1)	1.0 Ref.^b	1.0 Ref.	472 (100)	0
Epidural
Yes	28 (41.8)	88 (77.9)	4.9 (2.5-9.5)***	5.1 (2.6-9.91)***	76 (16.1)	67 (37.9)	1.5 (1.3-1.73)***	2.4 (1.6-3.6)***
No	39 (58.2)	25 (22.1)	1.0 Ref.	1.0 Ref.	396 (83.9)	110 (62.1)	1.0 Ref	1.0 Ref
Mode of delivery
Vaginal birth	44 (65.7)	35 (31.0)	1.0 Ref.	1.0 Ref.	444 (94.1)	149 (84.2)	1.0 Ref.	1.0 Ref.
Instrumental vaginal	13 (19.4)	38 (33.6)	3.6 (1.7-7.9)***	3.7 (1.7-8.07)***	14 (3.0)	18 (10.2)	3.83 (1.9-7.9)***	2.81 (1.33-5.94)**
Caesarean section	10 (14.9)	40 (35.4)	5.03 (2.21-11.5)***	5.2 (2.23-11.9)***	14 (3.0)	10 (5.6)	2.3(0.93-4.)	2.0 (0.9-4.73)
Self reported complications
Yes	22 (34.4)	53 (48.2)	1.8 (0.94-3.4)	1.84 (0.97-3.5)	87 (18.9)	40 (23.3)	1.1 (0.95-1.23)	1.1 (0.77-1.66)
No	42 (65.6)	57 (51.8)	1.0 Ref.	1.0 Ref.	374 (73.9)	132 (76.7)	1.0 Ref.	1.0 Ref
Birth experience
Positive	66 (98.5)	91 (80.5)	1.0 Ref.	1.0 Ref.	460 (98.1)	166 (93.8)	1.0 Ref.	1.0 Ref.
Negative	1 (1.5)	22 (19.5)	15.96 (2.1-121.4)***	16.03 (2.11-122.0)***	9 (1.9)	11 (6.2)	3.4 (1.4-8.2)**	2.8 (1.12-7.23)**

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