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. 2016 Oct 17;8(2):168–173. doi: 10.1111/jdi.12574

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© 2016 The Authors. Journal of Diabetes Investigation published by Asian Association for the Study of Diabetes (AASD) and John Wiley & Sons Australia, Ltd

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Receiver operating characteristic (ROC) curve of neck circumference (NC), waist circumference (WC), weight and body mass index (BMI) in gestational diabetes mellitus. Neck circumference is shown as the area under the curve, which was 0.653 (95% confidence interval [CI] 0.552–0.755). Waist circumference was 0.700 (95% CI 0.607–0.793); weight before pregnancy 0.651 (95% CI 0.556–0.747); BMI before pregnancy 0.650 (95% CI 0.554–0.746); BMI during pregnancy 0.369 (95% CI 0.280–0.459); and weight during pregnancy 0.389 (95% CI 0.298–0.479). Among the pregnant women, the optimal cut‐off point for neck circumference for indicating gestational diabetes mellitus was 35.15 cm, with the sensitivity of 0.488 and specificity of 0.779.