Table 3 Logistic regression for 1-year mortality after thoracic aorta replacement surgery

 High volume (> 60 cases/year)

Reference

Reference

 Medium volume (30–60 cases/year)

1.12 [0.89–1.42]

1.45 [1.12–1.87]

 Low volume (< 30 cases/year)

2.36 [2.02–2.76]

2.62 [2.18–3.14]

 ≤ 49

Reference

Reference

 50–59

1.16 [0.88–1.53]

1.23 [0.92–1.65]

 60–69

1.63 [1.29–2.08]

1.72 [1.32–2.25]

 70–79

2.53 [2.02–3.16]

2.81 [2.15–3.68]

 ≥ 80

3.62 [2.70–4.87]

5.05 [3.58–7.12]

Female

0.94 [0.82–1.08]

0.69 [0.58–0.82]

Extracardiac arteriopathy

1.42 [1.17–1.73]

1.18 [0.94–1.47]

Renal impairment

4.06 [2.50–6.58]

2.37 [1.37–4.08]

Chronic lung disease

1.28 [1.10–1.48]

1.00 [0.84–1.18]

Hypertension

1.27 [1.10–1.48]

0.94 [0.78–1.13]

Hyperlipidemia

1.18 [1.01–1.38]

1.02 [0.83–1.24]

Diabetes

1.39 [1.09–1.77]

1.01 [0.76–1.33]

Angina pectoris

1.20 [1.02–1.42]

1.00 [0.82–1.22]

Recent MI

1.50 [0.92–2.43]

1.14 [0.66–1.95]

History of PCI

2.61 [1.46–4.66]

1.76 [0.90–3.44]

Congestive heart failure

1.37 [1.08–1.74]

1.09 [0.83–1.44]

Emergent surgery

1.78 [1.31–2.43]

1.50 [1.05–2.13]

Atrial fibrillation

1.34 [0.98–1.83]

1.08 [0.76–1.54]

 0–1 units

Reference

Reference

 2–3 units

2.01 [1.21–3.34]

1.56 [0.93–2.63]

 4–5 units

4.09 [2.46–6.80]

2.89 [1.71–4.87]

 ≥ 6 units

13.31 [8.03–22.08]

9.15 [5.43–15.42]

 Ascending aorta

Reference

Reference

 Aortic arch

1.98 [1.49–2.62]

1.63 [1.19–2.23]

 Descending thoracic aorta

1.20 [0.98–1.46]

1.36 [1.07–1.72]

 Combined

1.04 [0.87–1.24]

1.20 [0.98–1.47]

Surgery year

0.97 [0.94–1.00]

0.96 [0.93–0.99]