Table 3. Unadjusted and Risk‐Adjusted In‐Hospital Mortality Effects (NACSA Cohort)
FrequencyObserved Mortality (%)Unadjusted OR (95% CI)Adjusted OR (95% CI)
Aortic segmenta
Root/ascending aorta68488.3ReferenceReference
Aortic arch76213.31.75 (1.42, 2.16)1.86 (1.47, 2.35)
Descending aorta32015.31.86 (1.38, 2.51)2.30 (1.66, 3.18)
Thoracoabdominal aorta12822.71.91 (1.18, 3.09)2.75 (1.67, 4.56)
Activity tertileb
Low‐volume (latest 3 years' activity)130810.6ReferenceReference
Medium‐volume (latest 3 years' activity)21599.50.89 (0.71, 1.12)0.80 (0.62, 1.02)
High‐volume (latest 3 years' activity)45918.80.82 (0.67, 1.00)0.76 (0.60, 0.95)
Dominant pathologyc
Aneurysm44224.9ReferenceReference
Dissection181917.24.07 (3.39, 4.89)2.27 (1.82, 2.82)
Other128413.22.97 (2.40, 3.67)2.05 (1.61, 2.61)
Data N/A5339.62.07 (1.50, 2.85)1.78 (1.26, 2.52)
Priorityb
Elective51174.8ReferenceReference
Nonelective294117.14.08 (3.47, 4.78)2.54 (2.09, 3.08)
  • a Adjusted for preoperative comorbidities, operative risk factors, and activity tertile.

  • b Adjusted for preoperative comorbidities, operative risk factors, and most distal aortic segment.

  • c Adjusted for preoperative comorbidities, operative risk factors, most distal aortic segment, and activity tertile.