Table 4.2GRADE summary of findings for risks of planned CS compared with planned vaginal birth for women with BMI of 50 kg/m2 or more and no previous CS (maternal outcomes)

Number of studiesPercentage of unplanned CS in planned vaginal birth groupNumber of womenEffectQuality
Planned CSPlanned vaginal birthRelative (95% CI)Absolute
Infection (wound and postpartum)
1 study

(Homer et al., 2011)
127/417

(30.5%)
38/174

(22%)
33/127a

(26%)
OR 0.79

(0.46 to 1.35)
43 more per 1000

(from 121 fewer to 62 more)
Low
Anaesthetic complication
1 study

(Homer et al., 2011)
127/417

(30.5%)
18/174

(10.3%)
35/417

(8.4%)
OR 1.25

(0.69 to 2.29)
19 more per 1000

(from 24 fewer to 89 more)
Low
Major maternal morbidity (composite score including one or more of: intraoperative or postpartum haemorrhage, thromboembolic event, septicaemia, septic shock and/or admission to intensive care unit)
1 study

(Homer et al., 2011)
127/417

(30.5%)
11/174

(6.3%)
18/417

(4.3)
OR 1.49

(0.69 to 3.23)
20 more per 1000

(from 13 fewer to 84 more)
Low
a

Denominator is women who had a CS

BMI body mass index; CI confidence interval; OR odds ratio; RR risk ratio

From: 4, Woman-centred care

Cover of Caesarean Section
Caesarean Section.
NICE Clinical Guidelines, No. 132.
National Collaborating Centre for Women's and Children's Health (UK).
London: RCOG Press; 2011 Nov.
Copyright © 2011, National Collaborating Centre for Women's and Children's Health.

No part of this publication may be reproduced, stored or transmitted in any form or by any means, without the prior written permission of the publisher or, in the case of reprographic reproduction, in accordance with the terms of licences issued by the Copyright Licensing Agency in the UK [www.cla.co.uk]. Enquiries concerning reproduction outside the terms stated here should be sent to the publisher at the UK address printed on this page.

The use of registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant laws and regulations and therefore for general use.

PubMed Health. A service of the National Library of Medicine, National Institutes of Health.