Table 1.

Maternal and delivery characteristics, and rate of any maternal complication in the early postpartum period; women with singleton term or post‐term vaginal deliveries in the Stockholm‐Gotland region, Sweden, 2008–12

Characteristics	Any complicationa		No complication		P‐value
	n	%	n	%
	2629	3.6	69 964	96.4
Time from retracted cervix to birth (hours)
<1	841	2.1	39 861	97.9	<0.0001
1 to <2	690	4.5	14 491	95.5
2 to <3	490	5.9	7851	94.1
3 to <4	341	6.6	4807	93.4
≥4	267	8.3	2954	91.7
Maternal age (years)
≤24	333	3.9	8162	96.1	0.061
25–29	709	3.7	18 504	96.3
30–34	993	3.7	26 024	96.3
≥35	591	3.3	17 225	96.7
Missing	3	–	49	–
Parity
Primiparous	1853	4.8	36 561	95.2	<0.0001
Parous with previous caesarean	240	7.3	3059	92.7
Parous with no previous caesarean	521	1.7	29 465	98.3
Missing	15	–	879	–
Height (cm)
≤154	92	4.4	2019	95.6	0.19
155–164	869	3.6	23 577	96.4
165–174	1327	3.6	35 901	96.4
≥175	310	3.8	7838	96.2
Missing	31	–	629	–
Body mass index (kg/m 2 )
<20.0	306	3.5	8548	96.5	0.88
20.0–24.9	1436	3.6	38 314	96.4
25.0–29.9	522	3.6	13 864	96.4
≥30	196	3.7	5132	96.3
Missing	169	–	4106	–
Cohabiting
Yes	2425	3.6	65 329	96.4	0.020
No	204	4.2	4622	95.8
Missing	0	–	13	–
Daily smoking
Nonsmoker	2544	3.7	66 751	96.3	0.0014
Smoker	85	2.6	3184	97.4
Missing	0	–	29	–
Induction of labour
Yes	552	4.8	10 937	95.2	<0.0001
No	2077	3.4	59 027	96.6
Epidural analgesia
Yes	1797	5.0	33 979	95.0	<0.0001
No	832	2.3	35 985	97.7
Oxytocin during delivery
Yes	1958	5.0	36 869	95.0	<0.0001
No	671	2.0	33 095	98.0
Mode of delivery
Noninstrumental	1898	3.0	61 211	97.0	<0.0001
Instrumentalb	731	7.7	8753	92.3
Episiotomy
Yes	151	4.6	3104	95.4	0.0015
No	2470	3.6	66 602	96.4
Missing	8	–	258	–
Gestational age (weeks)
37	93	2.9	3065	97.1	<0.0001
38	268	3.3	7900	96.7
39	531	3.0	17 174	97.0
40	868	3.7	22 850	96.3
41	610	4.0	14 528	96.0
≥42	259	5.5	4447	94.5

^aComplications include: maternal infectious disease, urinary retention, haematoma or ruptured sutures during postpartum hospital care.

^bVacuum extraction or forceps delivery.