Table 2

ORs of impaired fasting glucose in groups by quartile of baseline serum bicarbonate

Groups and modelsQuartile of serum bicarbonate (mmol/L); OR (95% CI)†
AllQuartile 1 (<25.8)Quartile 2 (25.8–26.8)Quartile 3 (26.8–28.0)Quartile 4 (>28.0)
IFG events57555246
Model 16.58 (3.87 to 11.20)2.99 (1.70 to 5.25)1.94 (1.06 to 3.55)*Reference
Model 24.52 (2.62 to 7.77)2.96 (1.68 to 5.20)2.17 (1.18 to 3.97)**Reference
Model 34.18 (2.42 to 7.21)3.02 (1.71 to 5.33)2.12 (1.15 to 3.89)***Reference
  • Model 1: unadjusted.

  • Model 2: adjusted for age, sex and fasting blood glucose (FBG).

  • Model 3: model 2+adjusted for body mass index, systolic blood pressure, serum creatinine, low-density lipoprotein (LDL) and alanine aminotransferase (ALT).

  • *P=0.031; **P=0.012; ***P=0.015.

  • P values for all other models were <0.001.

  • †Unless otherwise stated.

  • IFG, impaired fasting glucose.