Table I.

Demographics and clinical characteristics of 35,916 patients undergoing carotid endarterectomy

Variable	N or Median	% or (IQR)
Demographics
Age, y	72	(13)
Age
< 60 y	5123	14.4
60 – 69 y	11283	31.8
70 – 80 y	13226	37.3
> 80 y	5871	16.5
Gender
Male	21184	59.1
Female	14657	40.9
Race, non-white	3046	8.5
Clinical characteristics
Redo CEA	82	0.2
Hx stroke/ hemiplegia	8936	24.9
Hx of TIA	9954	27.7
Hx of Angina or MI	1364	3.8
Congestive Heart Failure	371	1.0
Previous PCI	6710	18.7
Previous Cardiac Surgery	8196	22.8
Diabetes Mellitus	9984	27.8
Hypertension	30658	85.4
Current smoker	10033	27.9
Hx of smoking
< 10 pack-y	11161	32.3
10 – 29 pack-y	4939	13.8
30 – 49 pack-y	3726	10.4
50 – 70 pack-y	3517	9.8
> 70 pack-y	2921	8.1
Alcohol use > 2 eh/day	1557	4.3
BMI
< 18.5	537	1.5
18.5 – 24.9	9507	26.5
25 – 29.9	13814	38.5
30 – 34.9	7470	20.8
35 – 40	2687	7.5
≥ 40	1154	3.2
Height
< 64 inch	12040	34.0
64 – 70 inch	14750	41.6
> 70 inch	8636	24.4
Renal failure	476	1.3
Hx of COPD	3792	10.6
Dyspnea	6847	19.1
Steroid use	747	2.1
Hx of revascularization for PVD	3499	9.7
Restpain/gangrene	344	1.0
Functional status
Independent	33952	94.5
Dependent	1961	5.5
Emergency procedure	614	1.7
ASA class > 3	4753	13.2
General anesthesia	30184	84.1
Vascular surgeon	34019	94.7
PGY level ≤ 3	4152	11.6

Hx, history, TIA, transient ischemic attack, MI, myocardial infarction, PCI, percutaneous coronary intervention, BMI, Body Mass Index; COPD, chronic obstructive pulmonary disease, PVD, peripheral vascular disease, ASA, American Society of Anesthesiologists; PGY, post-graduate year of resident