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Development and validation of a clinical model for preconception and early pregnancy risk prediction of gestational diabetes mellitus in nulliparous women
Journal article   Open access   Peer reviewed

Development and validation of a clinical model for preconception and early pregnancy risk prediction of gestational diabetes mellitus in nulliparous women

Brittney M Donovan, Patrick J Breheny, Jennifer G Robinson, Rebecca J Baer, Audrey F Saftlas, Wei Bao, Andrea L Greiner, Knute D Carter, Scott P Oltman, Larry Rand, …
PloS one, Vol.14(4), pp.e0215173-e0215173
2019
DOI: 10.1371/journal.pone.0215173
PMCID: PMC6461273
PMID: 30978258
url
https://doi.org/10.1371/journal.pone.0215173View
Published (Version of record) Open Access

Abstract

Implementation of dietary and lifestyle interventions prior to and early in pregnancy in high risk women has been shown to reduce the risk of gestational diabetes mellitus (GDM) development later in pregnancy. Although numerous risk factors for GDM have been identified, the ability to accurately identify women before or early in pregnancy who could benefit most from these interventions remains limited. As nulliparous women are an under-screened population with risk profiles that differ from their multiparous counterparts, development of a prediction model tailored to nulliparous women may facilitate timely preventive intervention and improve maternal and infant outcomes. We aimed to develop and validate a model for preconception and early pregnancy prediction of gestational diabetes mellitus based on clinical risk factors for nulliparous women. A risk prediction model was built within a large California birth cohort including singleton live birth records from 2007-2012. Model accuracy was assessed both internally and externally, within a cohort of women who delivered at University of Iowa Hospitals and Clinics between 2009-2017, using discrimination and calibration. Differences in predictive accuracy of the model were assessed within specific racial/ethnic groups. The prediction model included five risk factors: race/ethnicity, age at delivery, pre-pregnancy body mass index, family history of diabetes, and pre-existing hypertension. The area under the curve (AUC) for the California internal validation cohort was 0.732 (95% confidence interval (CI) 0.728, 0.735), and 0.710 (95% CI 0.672, 0.749) for the Iowa external validation cohort. The model performed particularly well in Hispanic (AUC 0.739) and Black women (AUC 0.719). Our findings suggest that estimation of a woman's risk for GDM through model-based incorporation of risk factors accurately identifies those at high risk (i.e., predicted risk >6%) who could benefit from preventive intervention encouraging prompt incorporation of this tool into preconception and prenatal care.
 Body Mass Index Risk Assessment California - epidemiology Humans Middle Aged Risk Factors Male Diabetes, Gestational - prevention & control Diabetes, Gestational - epidemiology Pregnancy Young Adult Ethnic Groups Models, Biological Adolescent Adult Female Continental Population Groups Parity Infant, Newborn Pregnancy Outcome Cohort Studies Preconception Care

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