Table 1:
Entire Cohort Medicare Eligibility | Propensity-Matched Cohort Medicare Eligibility | |||||
---|---|---|---|---|---|---|
Variable |
No n=175 |
Yes n=1,110 |
p |
No n=167 |
Yes n=167 |
p |
Demographics | ||||||
Age mean (SD), y | 59.7 (4.0) |
76.6 (7.0) |
<.001 | 59.7 (4.1) |
75.9 (7.2) |
<.001 |
Male, % | 90.9 | 76.5 | <.001 | 90.4 | 95.8 | .052 |
White race | 78.7 | 86.1 | .095 | 80.2 | 82.6 | .573 |
Clinical Characteristics | ||||||
Coronary Disease | 27.4 | 28.0 | .872 | 27.0 | 30.5 | .468 |
Coronary Revascularization | 14.9 | 12.3 | .327 | 14.6 | 13.2 | .751 |
Heart Failure | 8.6 | 11.5 | .265 | 7.2 | 10.2 | .331 |
COPD | 21.4 | 31.7 | .006 | 21.1 | 28.3 | .127 |
Smoking History | 93.1 | 78.7 | <.001 | 92.8 | 88.0 | .137 |
Prior Aortic Surgery | 2.3 | 2.8 | .694 | 2.4 | 3.6 | .521 |
Positive preoperative stress test | 8.5 | 7.5 | .807 | 8.4 | 4.8 | .186 |
BMI >35 | 18.9 | 8.4 | <.001 | 18 | 18.0 | 1 |
Hypertension | 81.0 | 87.0 | .033 | 80.8 | 84.4 | .386 |
Diabetes | 23.1 | 21.4 | .607 | 22.3 | 22.8 | .919 |
Chronic Kidney Disease* | 8.6 | 8.2 | .850 | 7.8 | 12.8 | .137 |
Preoperative Medications | ||||||
Aspirin | 61.5 | 61.7 | .959 | 61.7 | 63.5 | .734 |
P2y12 inhibitor | 15.5 | 19.0 | .276 | 16.2 | 21.6 | .208 |
Statin | 59.2 | 66.4 | .065 | 59.9 | 67.7 | .139 |
Operative Characteristics | ||||||
Urgency | ||||||
Elective | 77.1 | 84.8 | .013 | 79 | 78.4 | 524 |
Urgent | 14.3 | 11.0 | 14.4 | 12.0 | ||
Emergent (ruptured) | 8.6 | 4.2 | 6.6 | 9.6 | ||
AAA Diameter | ||||||
<5.5 cm | 49.7 | 47.1 | .628 | 50.9 | 47.5 | .703 |
5.5–6.4 cm | 28.6 | 32.2 | 28.7 | 28.4 | ||
>=6.5 cm | 21.7 | 20.7 | 20.4 | 24.1 | ||
Iliac aneurysm | 23.8 | 17.6 | .048 | 22.8 | 24.6 | .699 |
Conversion to open | 0 | 0.1 | .693 | 0 | 0.6 | .324 |
Creatinine >1.7 milligrams per deciliter.
SD, standard deviation; COPD, chronic obstructive pulmonary disease; BMI, body mass index in kilograms / meter squared; AAA, abdominal aortic aneurysm.