Table 2 Logistic regression for in-hospital mortality after thoracic aorta replacement surgery

 High volume (> 60 cases/year)

Reference

Reference

 Medium volume (30–60 cases/year)

1.28 [0.97–1.69]

1.56 [1.16–2.11]

 Low volume (< 30 cases/year)

2.98 [2.48–3.58]

3.12 [2.54–3.85]

 ≤ 49

Reference

Reference

 50–59

1.11 [0.82–1.52]

1.14 [0.82–1.58]

 60–69

1.51 [1.15–1.97]

1.51 [1.12–2.03]

 70–79

2.17 [1.68–2.79]

2.21 [1.64–2.99]

 ≥ 80

2.69 [1.92–3.76]

3.30 [2.25–4.85]

Female

1.02 [0.87–1.20]

0.80 [0.66–0.97]

Extracardiac arteriopathy

1.30 [1.03–1.62]

1.08 [0.84–1.39]

Renal impairment

3.46 [2.09–5.75]

1.88 [1.07–3.33]

Chronic lung disease

1.21 [1.02–1.43]

0.96 [0.79–1.16]

Hypertension

1.19 [1.01–1.41]

0.89 [0.72–1.09]

Hyperlipidemia

1.14 [0.95–1.37]

1.03 [0.83–1.29]

Diabetes

1.33 [1.01–1.75]

1.01 [0.74–1.38]

Angina pectoris

1.25 [1.03–1.50]

1.12 [0.89–1.39]

Recent MI

1.51 [0.88–2.58]

1.19 [0.66–2.14]

History of PCI

2.45 [1.31–4.58]

1.64 [0.80–3.39]

Congestive heart failure

1.42 [1.09–1.85]

1.13 [0.83–1.53]

Emergent surgery

2.02 [1.45–2.82]

1.58 [1.09–2.31]

Atrial fibrillation

1.46 [1.04–2.06]

1.30 [0.89–1.90]

 0–1 units

Reference

Reference

 2–3 units

2.51 [1.27–4.95]

1.98 [0.99–3.96]

 4–5 units

5.25 [2.65–10.38]

3.71 [1.86–7.43]

 ≥ 6 units

16.51 [8.39–32.47]

11.44 [5.75–22.79]

 Ascending aorta

Reference

Reference

 Aortic arch

1.89 [1.39–2.56]

1.55 [1.10–2.17]

 Descending thoracic aorta

1.07 [0.86–1.33]

1.25 [0.96–1.63]

 Combined

0.87 [0.71–1.06]

1.03 [0.82–1.29]

Surgery year

0.98 [0.94–1.01]

0.98 [0.94–1.02]