International Scholarly Research Notices

Research Article

Outcomes of Diabetic and Nondiabetic Patients Undergoing General and Vascular Surgery

Table 3

Logistic regression models for predicting 30-day morbidity.


Variable	Model 4—entire sample	Model 5—diabetics with general surgery sub-group	Model 6—diabetics with vascular surgery sub-group
	Model R-square
	0.225	0.204	0.111
	Odds ratio (95% CI)	Odds ratio (95% CI)	Odds ratio (95% CI)

Diabetes
Nondiabetic	Reference category
Diabetic—oral	0.96 (0.92, 1.01)	Reference category	Reference category
Diabetic—insulin	1.11 (1.06, 1.16)*	1.20 (1.12, 1.29)*	1.24 (1.12, 1.38)*
Anesthesia technique
General	Reference category	Reference category	Reference category
Epidural	0.97 (0.80, 1.12)	1.11 (0.51, 2.36)	1.13 (0.81, 1.57)
Spinal	0.63 (0.57, 0.69)*	0.57 (0.41, 0.80)*	1.08 (0.91, 1.29)
Regional	0.39 (0.33, 0.47)*	0.66 (0.28, 1.57)*	0.39 (0.29, 0.53)*
Local	0.32 (0.23, 0.43)*	0.33 (0.15, 0.75)*	0.36 (0.14, 0.91)*
Monitored anesthesia care	0.38 (0.34, 0.41)*	0.34 (0.27, 0.44)*	0.44 (0.35, 0.56)*
Other	0.28 (0.17, 0.46)*	0.00 (0.00, α)	0.56 (0.19, 1.66)
None	1.09 (0.50, 2.37)	1.08 (0.12, 10.2)	1.44 (0.19, 10.9)
Surgical specialty: vascular	1.69 (1.62, 1.75)*
Male gender	1.01 (0.98, 1.03)	1.00 (.095, 1.09)	0.90 (0.78, 0.94)*
Ventilator dependent	3.24 (2.87, 3.65)*	3.19 (2.47, 4.13)*	4.22 (2.61, 6.81)*
COPD	1.43 (1.37, 1.50)*	1.60 (1.43, 1.78)*	1.41 (1.23, 1.61)*
Cardiac risk factors	1.27 (1.23, 1.31)*	1.24 (1.12, 1.36)*	1.33 (1.09, 1.63)*
On dialysis	0.91 (0.84, 0.98)*	1.13 (0.95, 1.33)	1.02 (0.89, 1.17)
Steroid use	1.48 (1.39, 1.59)*	1.47 (1.25, 1.72)*	1.07 (0.85, 1.36)
10% weight loss	2.24 (2.07, 2.42)*	2.22 (1.84, 2.67)*	1.47 (1.04, 2.09)*
Sepsis
None	Reference category	Reference category	Reference category
Sepsis	1.84 (1.72, 1.97)*	1.89 (1.62, 2.19)*	1.65 (1.34, 2.03)*
Septic shock	2.73 (2.40, 3.10)*	3.42 (2.60, 4.49)*	1.98 (1.21, 3.22)*
SIRS	1.63 (1.55, 1.71)*	1.59 (1.40, 1.81)*	1.70 (1.41, 2.04)*
Emergent case	1.57 (1.51, 1.63)*	1.50 (1.35, 1.66)*	1.82 (1.54, 2.14)*
ASA class
No ASA class assigned	Reference category	Reference category	Reference category
No disturbance	0.42 (0.29, 0.60)*	0.60 (0.17, 2.08	3.39 (0.68, 16.9)
Mild disturbance	1.00 (0.70, 1.42)	0.68 (0.25, 1.85)	1.72 (0.54, 5.42)
Severe disturbance	2.29 (1.62, 3.26)*	1.19 (0.44, 3.24)	2.26 (0.73, 6.95)
Life threatening	4.92 (3.46, 7.00)*	2.51 (0.92, 6.86)	3.99 (1.29, 12.3)*
Moribund	5.85 (3.92, 8.73)*	1.92 (0.64, 5.78)	10.0 (2.37, 42.3)*
Wound classification
Clean	Reference category	Reference category	Reference category
Clean/contaminated	1.99 (1.93, 2.07)*	1.99 (1.82, 2.16)*	1.32 (1.07, 1.63)*
Contaminated	1.98 (1.88, 2.08)*	2.31 (2.02, 2.63)*	1.31 (1.06, 1.62)*
Dirty/infected	2.38 (2.25, 2.51)*	2.46 (2.15, 2.81)*	1.15 (0.98, 1.35)

Values expressed as odds ratios (95% confidence intervals x, y). *Significance at . COPD: chronic obstructive pulmonary disease, ASA: American Society of Anesthesiologists, SIRS: systemic inflammatory response syndrome, and CI: confidence interval.