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. Author manuscript; available in PMC: 2018 Mar 1.
Published in final edited form as: J Vasc Surg. 2016 Dec 14;65(3):626–634. doi: 10.1016/j.jvs.2016.09.036

Table V.

Adjusted Odds Ratios for Perioperative Mortality By Volume Quintile with High Volume (Quintile 5 as Reference)

Surgeon Volume Surgeon Volume Adjusted for Hospital Volume Hospital Volume Hospital Volume Adjusted for Surgeon Volume
Odds Ratio (95% CI) Odds Ratio (95% CI)
Quintile 1
 EVAR 1.1 (0.9–1.3) 0.9 (0.7–1.1) 1.4 (1.2–1.7)a 1.5 (1.2–1.9)a
 Open 1.6 (1.4–1.9)a 1.5 (1.3–1.7)a 1.5 (1.3–1.8)a 1.3 (1.1–1.5)a
Quintile 2
 EVAR 1.0 (0.8–1.2) 0.9 (0.7–1.1) 1.2 (1.0–1.4) 1.3 (1.0–1.6)a
 Open 1.4 (1.2–1.7)a 1.3 (1.1–1.6)a 1.4 (1.2–1.7)a 1.2 (1.1–1.5)a
Quintile 3
 EVAR 0.9 (0.8–1.1) 0.9 (0.7–1.1) 1.2 (1.0–1.4) 1.3 (1.0–1.6)a
 Open 1.3 (1.1–1.5)a 1.2 (1.0–1.4)a 1.3 (1.1–1.5)a 1.2 (1.0–1.4)
Quintile 4
 EVAR 0.9 (0.7–1.1) 0.8 (0.7–1.0) 1.2 (1.0–1.4) 1.2 (1.0–1.5)
 Open 1.2 (1.0–1.4)a 1.2 (1.0–1.4) 1.2 (1.0–1.4) 1.1 (1.0–1.3)
a

Statistically significant effect, CI: Confidence Interval