Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases

<p>Abstract</p> <p>Background</p> <p>Various studies indicate that inter-hospital comparisons have to take case mix into account and that risk adjustment procedures are necessary to control for potential predictors of cesarean delivery (CD). Different data sources have...

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Main Authors: Stivanello Elisa, Rucci Paola, Carretta Elisa, Pieri Giulia, Fantini Maria P
Format: Article
Language:English
Published: BMC 2013-01-01
Series:BMC Health Services Research
Online Access:http://www.biomedcentral.com/1472-6963/13/13
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author Stivanello Elisa
Rucci Paola
Carretta Elisa
Pieri Giulia
Fantini Maria P
author_facet Stivanello Elisa
Rucci Paola
Carretta Elisa
Pieri Giulia
Fantini Maria P
author_sort Stivanello Elisa
collection DOAJ
description <p>Abstract</p> <p>Background</p> <p>Various studies indicate that inter-hospital comparisons have to take case mix into account and that risk adjustment procedures are necessary to control for potential predictors of cesarean delivery (CD). Different data sources have been used to retrieve information on potential predictors of CD. The aim of this study was to compare the discrimination capacity and fit of predictive models of CD created using different sources and to assess whether more complex models improve inter-hospital comparisons.</p> <p>Methods</p> <p>We created 4 predictive models of CD. One model included only variables from Hospital Discharge Records of the index hospitalization, one included also information from previous hospitalizations, one also clinical variables from birth certificates (BC) and one also socio-demographic variables. We compared the four models using the Receiver Operator Curve and the Akaike and Bayesian Information Criteria.</p> <p>Results</p> <p>Information from Birth Certificates improved the discrimination and model fit. Adding socio-demographic variables or past comorbidities did not improve the discrimination capacity or the model fit. Hospital-specific CD resulting from the models were highly correlated.</p> <p>Conclusions</p> <p>Record linkage improves the performance of the models but does not affect inter-hospital comparisons.</p>
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spelling doaj.art-c5f66a5ea61e461297d6e2ef357897762022-12-21T21:04:31ZengBMCBMC Health Services Research1472-69632013-01-011311310.1186/1472-6963-13-13Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databasesStivanello ElisaRucci PaolaCarretta ElisaPieri GiuliaFantini Maria P<p>Abstract</p> <p>Background</p> <p>Various studies indicate that inter-hospital comparisons have to take case mix into account and that risk adjustment procedures are necessary to control for potential predictors of cesarean delivery (CD). Different data sources have been used to retrieve information on potential predictors of CD. The aim of this study was to compare the discrimination capacity and fit of predictive models of CD created using different sources and to assess whether more complex models improve inter-hospital comparisons.</p> <p>Methods</p> <p>We created 4 predictive models of CD. One model included only variables from Hospital Discharge Records of the index hospitalization, one included also information from previous hospitalizations, one also clinical variables from birth certificates (BC) and one also socio-demographic variables. We compared the four models using the Receiver Operator Curve and the Akaike and Bayesian Information Criteria.</p> <p>Results</p> <p>Information from Birth Certificates improved the discrimination and model fit. Adding socio-demographic variables or past comorbidities did not improve the discrimination capacity or the model fit. Hospital-specific CD resulting from the models were highly correlated.</p> <p>Conclusions</p> <p>Record linkage improves the performance of the models but does not affect inter-hospital comparisons.</p>http://www.biomedcentral.com/1472-6963/13/13
spellingShingle Stivanello Elisa
Rucci Paola
Carretta Elisa
Pieri Giulia
Fantini Maria P
Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases
BMC Health Services Research
title Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases
title_full Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases
title_fullStr Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases
title_full_unstemmed Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases
title_short Risk adjustment for cesarean delivery rates: how many variables do we need? An observational study using administrative databases
title_sort risk adjustment for cesarean delivery rates how many variables do we need an observational study using administrative databases
url http://www.biomedcentral.com/1472-6963/13/13
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