Variation in rates of caesarean section among English NHS trusts after accounting for maternal and clinical risk: cross sectional study.

Abstract:

OBJECTIVE:To determine whether the variation in unadjusted rates of caesarean section derived from routine data in NHS trusts in England can be explained by maternal characteristics and clinical risk factors. DESIGN:A cross sectional analysis using routinely collected hospital episode statistics was performed. A multiple logistic regression model was used to estimate the likelihood of women having a caesarean section given their maternal characteristics (age, ethnicity, parity, and socioeconomic deprivation) and clinical risk factors (previous caesarean section, breech presentation, and fetal distress). Adjusted rates of caesarean section for each NHS trust were produced from this model. SETTING:146 English NHS trusts. Population Women aged between 15 and 44 years with a singleton birth between 1 January and 31 December 2008. MAIN OUTCOME MEASURE:Rate of caesarean sections per 100 births (live or stillborn). RESULTS:Among 620 604 singleton births, 147 726 (23.8%) were delivered by caesarean section. Women were more likely to have a caesarean section if they had had one previously (70.8%) or had a baby with breech presentation (89.8%). Unadjusted rates of caesarean section among the NHS trusts ranged from 13.6% to 31.9%. Trusts differed in their patient populations, but adjusted rates still ranged from 14.9% to 32.1%. Rates of emergency caesarean section varied between trusts more than rates of elective caesarean section. CONCLUSION:Characteristics of women delivering at NHS trusts differ, and comparing unadjusted rates of caesarean section should be avoided. Adjusted rates of caesarean section still vary considerably and attempts to reduce this variation should examine issues linked to emergency caesarean section.

journal_name

BMJ

authors

Bragg F,Cromwell DA,Edozien LC,Gurol-Urganci I,Mahmood TA,Templeton A,van der Meulen JH

doi

10.1136/bmj.c5065

subject

Has Abstract

pub_date

2010-10-06 00:00:00

pages

c5065

eissn

0959-8138

issn

1756-1833

journal_volume

341

pub_type

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