Am J Perinatol 2019; 36(09): 879-885
DOI: 10.1055/s-0039-1678604
SMFM Fellowship Series Article
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

A Regression Model for Prediction of Cesarean-Associated Blood Transfusion

Catherine M. Albright
1   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington
,
Timothy E. Spillane
2   Department of Physics, University of Connecticut, Storrs, Connecticut
,
Brenna L. Hughes
3   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Duke University, Durham, North Carolina
,
Dwight J. Rouse
4   Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Women and Infants Hospital, Alpert Medical School of Brown University, Providence, Rhode Island
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Weitere Informationen

Publikationsverlauf

05. November 2018

09. Januar 2019

Publikationsdatum:
11. Februar 2019 (online)

Abstract

Objective To develop a model to predict cesarean-associated red blood cell transfusion.

Study Design Secondary analysis of all cesarean deliveries in the Maternal-Fetal Medicine Units Network Cesarean Registry. Using a split-sample technique, the derivation group was used to identify associated factors and build predictive models, and the validation group was used to estimate classification errors and determine test characteristics. Using factors available at the time of cesarean, we developed a multivariable logistic regression prediction model.

Results A total of 59,468 women were split evenly and randomly into the derivation and validation groups. The overall rate of transfusion was 2.7%. The area under the receiver operating characteristic curve for the derivation and validation groups were 0.82 (95% confidence interval [CI]: 0.80–0.84) and 0.84 (95% CI: 0.82–0.85), respectively (p = 0.16). The strongest predictors of transfusion were placenta previa (odds ratio [OR]: 7.06, 95% CI: 5.19–9.61) and eclampsia/Hemolysis Elevated Liver Enzymes Low Platelets syndrome (OR: 5.67, 95% CI: 3.77–8.51). In the validation group, the model had a sensitivity, specificity, positive, and negative predictive values of 55.8, 91.5, 16.2, and 98.6%, respectively. Overall, 90.5% of patients were correctly classified.

Conclusion A regression model incorporating variables available at the time of cesarean accurately predicts the need for intra- or postoperative transfusion.

Note

This study was presented as a poster at the 2016 Society for Maternal-Fetal Medicine Annual Meeting, February 1–6, 2016, Atlanta, GA.


 
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