Effects of caesarean section on maternal health in low risk nulliparous women: a prospective matched cohort study in Shanghai, China

Table 4 Clinical events within one year after discharge by mode of delivery #

Factor	Caesarean section N (%)	Vaginal delivery N (%)	RR	95%CI	aRR*	95%CI
Anaemia	40 (13.6)	40 (13.5)	1.0	0.7-1.5	1.2	0.7-1.8
RTI	20 (6.8)	26 (8.87)	0.8	0.4-1.3	1.0	0.5-1.8
Wound complications^†	31 (10.5)	32(10.9)	1.0	0.6-1.5	1.2	0.7-1.9
Waist/back pain	60(20.3)	50 (17.0)	1.2	0.9-1.7	1.2	0.8-1.7
Chronic abdominal pain	13 (4.4)	5 (1.7)	2.6	0.9-7.2	3.6	1.2-11.0
Rehospitalization	5 (1.7)	5^$ (1.7)	1.0	0.3-3.4	0.7^‡	0.2-3.6

# The clinical event was counted only once when women had the same outcome twice or more after discharge from hospital at 1, 6 and 12 months post-partum.
* Adjusted for propensity score and medical indications.
^† Wound complications refers to incisional pain without infection and delayed healing of abdominal incisions and episiotomies due to infection or abscess not manifested while in hospital, all reported at follow-up interviews.
$ There were 5 women (6 times) rehospitalized due to medical reasons within one year post-partum in the vaginal delivery group.
^‡Exact Logistic regression.

ISSN: 1471-2393