Table 2.

Crude OR (95% CI) of factors associated with blood glucose concentrations < 80 mg/dl or ≥ 150 mg/dl

	BG < 80 vs 80 ≤ BG < 150		BG ≥150 vs 80 ≤ BG <150
	OR (95% CI)	P value	OR (95% CI)	P value
Age (per year)	1.02 (1.01; 1.03)	<0.001	1.02 (1.01; 1.02)	<0.001
Gender (female vs male)	1.4 (1.1; 1.8)	0.014	1.1 (0.95; 1.4)	0.148
Neurosurgery	1.0	0.324	1.0	<0.001
Abdominal surgery	0.8 (0.6; 1.1)		0.7 (0.6; 0.9)
Vascular surgery	0.8 (0.6; 1.1)		0.7 (0.6; 0.9)
Trauma surgery	0.7 (0.5; 1.03)		0.5 (0.4; 0.7)
SAPS II (>36 vs ≤36)	1.5 (1.2; 1.8)	<0.001	1.5 (1.3; 1.7)	<0.001
Sepsis 1992 severe/shock (yes vs no)	1.2 (0.99; 1.4)	0.068	1.4 (1.2; 1.6)	<0.001
Sepsis 2003 severe/shock (yes vs no)	1.1 (0.9; 1.3)	0.355	1.2 (1.04; 1.3)	0.012
Extracorporeal renal replacement therapy (yes vs no)	1.3 (0.9; 1.8)	0.124	1.3 (0.95; 1.7)	0.103
MELD (>9 vs ≤9)	1.3 (1.1; 1.7)	0.008	1.3 (1.1; 1.5)	0.005
SOFA (>4 vs ≤4)	1.4 (1.2; 1.7)	<0.001	1.5 (1.3; 1.7)	<0.001
Adrenaline (yes vs no)	1.7 (1.9; 2.4)	0.004	1.3 (1.02; 1.6)	0.031
Noradrenaline (yes vs no)	1.7 (1.4; 2.0)	<0.001	1.7 (1.5; 2.0)	<0.001
Steroids (yes vs no)	1.8 (1.4; 2.2)	<0.001	2.0 (1.7: 2.3)	<0.001
Insulin (yes vs no)	2.4 (1.9; 3.0)	<0.001	2.8 (2.4; 3.2)	<0.001

BG = blood glucose; CI = confidence interval; IIT = intensive insulin therapy; MELD = model of end stage liver disease; OR = odds ratio; SAPS II = Simplified Acute Physiology Score; SOFA = Sequential Organ Failure Assessment.

Number of data sets: see Table 1. ORs with p < 0.05 are highlighted in bold numbers.

To convert the values for glucose to millimoles per litre, multiply by 0.05551.

For comparison with the other types of surgery, the risk has been set at 1 for neurosurgery.