Table 3 Crude and adjusted odds ratios for mortality with ASA as a proxy for comorbidity

Non-diabetics

1.00 (reference)

1.00 (reference)

DM, type 1

2.17 (1.96–2.39)

1.74 (1.55–1.93)

DM, type 2

2.27 (2.16–2.39)

1.17 (1.10–1.24)

DM, unspecified

3.07 (1.17–6.74)

1.15 (0.39–2.85)

Age

1.07 (1.07–1.07)

1.05 (1.05–1.05)

Women

0.81 (0.79–0.84)

0.99 (0.95–1.03)

Men

1.00 (reference)

1.00 (reference)

ASA class

 ASA 1

1.00 (reference)

1.00 (reference)

 ASA 2

5.85 (5.32–6.44)

2.48 (2.25–2.74)

 ASA 3

23.60 (21.50–25.90)

6.21 (5.63–6.86)

 ASA 4

50.00 (44.90–55.80)

9.92 (8.83–11.2)

Year of surgery

 2007–2010

1.00 (reference)

1.00 (reference)

 2011–2014

0.84 (0.82–0.87)

0.74 (0.71–0.76)

Type of surgery

 Acute

2.43 (2.35–2.51)

2.43 (2.33–2.54)

 Elective

1.00 (reference)

1.00 (reference)

 Cancer

4.20 (4.06–4.35)

6.22 (5.95–6.51)

 Neuro

1.47 (1.39–1.56)

1.50 (1.40–1.61)

 Endocrine

0.22 (0.18–0.27)

0.57 (0.46–0.70)

 Ophthalmic

0.44 (0.35–0.54)

0.82 (0.65–1.02)

 Ear, nose, and throat

0.27 (0.22–0.33)

0.63 (0.51–0.76)

 Oral and maxillofacial

0.39 (0.34–0.44)

0.80 (0.68–0.93)

 Thoracic non-cardiac

2.00 (1.77–2.26)

1.07 (0.93–1.22)

 Breast

0.29 (0.25–0.33)

0.23 (0.20–0.27)

 Abdominal

1.34 (1.29–1.40)

1.01 (0.96–1.07)

 Urologic

1.09 (1.03–1.15)

0.63 (0.59–0.68)

 Gynecologic

0.35 (0.32–0.39)

0.53 (0.48–0.60)

 Orthopedic

1.00 (reference)

1.00 (reference)

 Vascular

1.49 (1.39–1.60)

0.99 (0.91–1.08)

 Dermatologic

1.15 (1.04–1.27)

0.74 (0.66–0.83)