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Clinical risk score to recognize macrosomia at the time of delivery
J Patumanond1, C Tawichasri, S Khunpradit
1Clinical Epidemiology Unit, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand. jpatumanond@gmail.com
Objective:
To develop a clinical risk score to help in recognizing macrosomia at the time of delivery.
Methods:
A case-control data analysis was conducted at a university-affiliated general hospital in Lamphun, Thailand. Macrosomic cases were 67 women who delivered babies weighing at least 4000 g. Controls were 779 women with babies weighing between 2500 g. and <4000 g. The best predictors were selected by multivariable logistic regression and transformed into clinical risk scores.
Result:
The best combination of predictors included parity, gestational age at delivery, weight at delivery and symphysis-fundal height. The scores predicted macrosomia correctly with an AuROC of 94.1% (95% CI; 92.3, 95.6). The likelihood ratio of positive for macrosomia was 0 in the low risk category and 10.68 (95% CI; 7.76, 14.68) in the high risk.
Conclusion:
A simple clinical risk score may help obstetricians suspect macrosomia at the time of delivery in areas where antenatal care services are inadequate.
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