Table 5.

Oxytocin and other associated factors and birth by emergency caesarean section in multiparous women (N=4021)^a

	Emergency CS n=273	Crude OR (95% CI)	AOR (95% CI)b
Oxytocin only (n=254)c	n (%)
Use of oxytocin and reason
Ruptured membranes	22 (8.7)	2.12 (1.31–3.38)	2.05 (1.18–3.55)
Stage 1	20 (7.8)	1.59 (0.98–2.59)	1.27 (0.74–2.18)
Stage 2	4 (1.6)	1.98 (0.70–5.61)	2.33 (0.73–7.43)
Induced	71 (28.0)	2.18 (1.62–2.94)	2.72 (1.78–4.13)
No oxytocin	137 (53.9)	Ref.	Ref.
Maternal age ( years )
<25	30 (11.0)	0.55 (0.37–0.82)	0.64 (0.41–1.01)
25–37	224 (82.0)	Ref.	Ref.
≥38	19 (7.0)	1.93 (1.17–3.19)	1.85 (1.02–3.34)
Gestational age (weeks) (n=272)
<37	49 (18.0)	1.72 (1.25–2.39)	1.71 (1.14–2.56)
37–41	219 (80.5)	Ref.	Ref.
≥42	4 (1.5)	2.15 (0.75–6.17)	1.01 (0.29–3.52)
Birthweight (g)
<3650	219 (80.2)	Ref.	Ref.
≥3650	54 (19.8)	1.81 (1.32–2.47)	2.12 (1.46–3.10)
Bad obstetric history
Yes	29 (10.6)	1.37 (0.92–2.05)	1.13 (0.64–1.99)
No	244 (89.4)	Ref.	Ref.
Previous caesarean section
≥1 previous CS	142 (52.1)	16.73 (12.74–21.97)	21.95 (16.10–29.94)
No	131 (47.9)	Ref.	Ref.
Presentation/lie
Vertex	225 (82.4)	Ref.	Ref.
No vertex	48 (17.6)	6.24 (4.35–8.93)	7.54 (4.76–11.95)

^aExcluding multiple pregnancies and elective CS.

^bControlled for all variables in the table.

^cUse of oxytocin not registered for 19 multiparous women. AOR: adjusted odds ratio.