Table 2.

Demographics of the cohort of patients undergoing major amputation for PAD

	Overall (n=20,464)	Underwent Vascular Procedure In Year Prior to Amputation (n=9,349)	Did Not Undergo Vascular Procedure In Year Prior to Amputation (n=11,115)
Characteristic	Mean (95% CI)	Mean (95% CI)	Mean (95% CI)	p value
Age	78.4 (78.3–78.5)	77.0 (76.9–77.2)	79.2 (79.0–79.3)	<0.001
Female Gender (%)	49.3 (48.6–50.0)	46.1 (45.0–47.3)	51.0 (50.2–51.9)	<0.001
Black Race (%)	27.7 (27.0–28.3)	24.8 (23.8–25.8)	29.3 (28.5–30.0)	<0.001
Diabetes (%)	49.3 (48.6–49.9)	55.2 (54.0–56.3)	45.9 (45.1–48.8)	<0.001
Coronary Artery Disease (%)	13.5 (12.9–13.9)	16.5 (15.7–17.4)	11.7 (11.1–12.2)	<0.001
Congestive Heart Failure (%)	35.1 (34.5–35.8)	38.3 (37.1–39.2)	33.4 (32.6–34.2)	<0.001
COPD (%)	22.8 (22.2–23.4)	26.7 (25.7–27.7)	20.6 (19.9–21.3)	<0.001
Cerebrovascular Disease (%)	11.3 (10.8–11.7)	11.3 (10.6–12.0)	11.3 (10.7–11.8)	0.548
Renal Failure (%)	17.4 (16.8–17.9)	22.0 (21.1–22.9)	14.7 (14.1–15.4)	<0.001
Charlson Comorbidity Score	2.9 (2.8–2.9)	3.3 (3.3–3.4)	2.6 (2.6–2.7)	<0.001