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  5. Differences in Nulliparous Caesarean Section Rates across Models of Care: A Decomposition Analysis
 
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Differences in Nulliparous Caesarean Section Rates across Models of Care: A Decomposition Analysis

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Author(s)
Brick, Aoife 
Layte, Richard 
Nolan, Anne 
Turner, Michael 
Uri
http://hdl.handle.net/10197/9067
Date Issued
08 July 2016
Date Available
30T17:15:57Z November 2017
Abstract
To evaluate the extent of the difference in elective (ELCS) and emergency (EMCS) caesarean section (CS) rates between nulliparous women in public maternity hospitals in Ireland by model of care, and to quantify the contribution of maternal, clinical, and hospital characteristics in explaining the difference in the rates. Cross-sectional analysis using a combination of two routinely collected administrative databases was performed. A non-linear extension of the Oaxaca-Blinder method is used to decompose the difference between public and private ELCS and EMCS rates into the proportion explained by the differences in observable maternal, clinical, and hospital characteristics and the proportion that remains unexplained. Of the 29,870 babies delivered to nulliparous women, 7,792 were delivered via CS (26.1 %), 79.6 % of which were coded as EMCS. Higher prevalence of ELCS was associated with breech presentation, other malpresentation, and the mother being over 40 years old. Higher prevalence of EMCS was associated with placenta praevia or placental abruption, diabetes (pre-existing and gestational), and being over 40 years old. The private model of care is associated with ELCS and EMCS rates 6 percentage points higher compared than the public model of care but this differential is insignificant in the fully adjusted models for EMCS. Just over half (53 %) of the 6 percentage point difference in ELCS rates between the two models of care can be accounted for by maternal, clinical and hospital characteristics. Almost 80 % of the difference for EMCS can be accounted for.CONCLUSIONS: The majority of the difference in EMCS rates across models of care can be explained by differing characteristics between the two groups of women. The main contributor to the difference was advancing maternal age. The unexplained component of the difference for ELCS is larger; an excess private effect remains after accounting for maternal, clinical, and hospital characteristics. This requires further investigation and may be mitigated in future with the introduction of clinical guidelines related to CS.
Sponsorship
Health Research Board
Type of Material
Journal Article
Publisher
BioMed Central
Journal
BMC Health Services Research
Volume
16
Issue
239
Copyright (Published Version)
2016 the Authors
Keywords
  • Caesarean section

  • Emergency caesarean s...

  • Non-linear Oxaca-Blin...

  • Private practice

DOI
10.1186/s12913-016-1494-3
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Owning collection
Medicine Research Collection
Scopus© citations
11
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Feb 1, 2023
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