Table 1

Odds ratios of different functional forms of FBG and ICU admission

Fasting blood glucose*Odds ratio95% CIP value
Linear
 Per 1 mmol/L increase1.591.3–1.89<0.001
 Per 5 mmol/L increase10.454.8–22.71<0.001
Dichotomous
 <11 mmol/LReference
 ≥11 mmol/L11.914.9–30.81<0.001
 <7 mmol/LReference
 ≥7 mmol/L14.576.87–32.59<0.001
Categorical
 <5.5 mmol/LReference
 5.5 to 6.9 mmol/L1.690.63–4.050.270
 ≥7 mmol/L19.217.80–51.46<0.001
Nonlinear
 10 mmol/L vs. 5 mmol/L36.0223.63–54.91
 15 mmol/L vs. 10 mmol/L2.261.55–3.30
 20 mmol/L vs. 15 mmol/L1.790.84–3.79
  • * All models were adjusted for age, sex, smoking, nationality, diabetes status, hypertension, asthma, cardiovascular disease, malignancy, and renal failure.