Table 4. Univariate risk factors for major morbidity (stroke, paraplegia/paraparesis, dialysis) or 1-year mortality for patients undergoing open repair.

Variable	No morbidity/mortality (n=24)	Yes morbidity/mortality (n=8)	P value
Age [year]	47 [34,60]	62 [50,66]	0.05
Age >50 years	9 (38%)	6 (75%)	0.07
Male	20 (83%)	7 (88%)	0.78
White race	10 (42%)	4 (50%)	0.68
Body mass index [kg/m2]	25 [22,29]	25 [21,29]	0.86
Hypertension	22 (92%)	7 (88%)	0.73
Hyperlipidemia	11 (46%)	6 (75%)	0.15
Active or recent tobacco use	13 (54%)	7 (88%)	0.09
Diabetes	1 (4%)	0	0.56
Coronary artery disease	6 (25%)	2 (25%)	1
History of prior stroke	4 (17%)	2 (25%)	0.60
COPD	3 (13%)	3 (38%)	0.12
Baseline creatinine >1.5 mg/dL	3 (13%)	1 (13%)	1
Peripheral vascular disease	1 (4%)	1 (13%)	0.40
Connective tissue disease	8 (33%)	1 (13%)	0.26
Prior aortic surgery	16 (67%)	5 (63%)	0.83
Index dissection type			0.54
DeBakey type I	13 (54%)	3 (38%)
DeBakey type IIIa	1 (4%)	0
DeBakey type IIIb	10 (42%)	5 (63%)
Time in months from dissection	30 [10,64]	85 [16,142]	0.26
Maximum aortic diameter (cm)	6.2 (5.6,7.2)	6.8 (6.2,8.7)	0.15
Non-elective operation	5 (21%)	1 (13%)	0.60
Procedure performed			0.26
Open descending	8 (33%)	1 (13%)
Open TAAA	16 (67%)	7 (88%)
Extent of TAAA			0.78
Type I	6 (38%)	3 (43%)
Type II	6 (38%)	2 (29%)
Type III	3 (19%)	2 (29%)
Type IV	1 (6%)	0
Cardiopulmonary bypass time [min]	195 [179,227]	214 [189,247]	0.32
Cerebral circulatory arrest time [min]	17 [9,22]	17 [4,19]	0.46
Systemic circulatory arrest time [min]	51 [40,73]	70 [26,79]	0.45
Femoral arterial cannulation	7 (29%)	4 (50%)	0.28
Era (years)			0.04
2005-2009	8 (33%)	6 (75%)
2010-2013	16 (67%)	2 (25%)

Data represented as median (interquartile range) or number (percent). COPD, chronic obstructive pulmonary disease; TAAA, thoracoabdominal aortic aneurysm.