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Table 2 Relative risk of GDM in those with normal BMI (n = 10,382) across the different AC and ACHtR groupsa

From: Prediction of gestational diabetes mellitus by different obesity indices

  GDM/Total (%) OR(95%CI) P
AC (cm)
 Q1 (< 74.0) 106/1748 (6.1) 0.52(0.43–0.65)  < 0.001
 Q2/Q3 (74.0–86.0) 825/7526 (11.0) 1  < 0.001
 Q4 (> 86.0) 173/1108 (15.6) 1.50(1.26–1.80)  < 0.001
ACHtR
 Q1 (< 0.46) 133/2315 (5.7) 0.48(0.40–0.58)  < 0.001
 Q2/Q3 (0.46–0.53) 770/6840 (11.3) 1  < 0.001
 Q4 (> 0.53) 201/1227 (16.4) 1.54(1.31–1.83)  < 0.001
  1. aAC Abdominal circumference, ACHtR Abdominal circumference/height ratio
  2. OR Odds ratio, AC were divided into three groups according to the quartile (Q1, low-AC group (< 74.0 cm);Q2/Q3, normal-AC group (74.0–86.0 cm); Q4, high-AC group (> 86.0 cm); ACHtR were divided into three groups according to the quartile (Q1, Low- ACHtR group (< 0.46);Q2/Q3, Normal-ACHtR group (0.46–0.53); Q4, High-ACHtR group (> 0.53))