Table I.

Baseline characteristics of the study population

Characteristic	N of patients (%)
Age >65 yr, N (%)	131 (22%)
Female sex, N (%)	271 (45%)
Black race, N (%)	524 (87%)
Diabetes, N (%)	307 (51%)
Hypertension, N (%)	560 (93%)
Coronary artery disease, N (%)	184 (31%)
Peripheral vascular disease, N (%)	106 (18%)
Cerebrovascular disease, N (%)	120 (20%)
Congestive heart failure, N (%)	188 (31%)
Obese, N (%)	202 (34%)
Ipsilateral CVC, N (%)	177 (30%)
Comorbid score ≥4, N (%)	76 (13%)
Antiplatelet drug, N (%)	212 (35%)
Anticoagulation, N (%)	23 (4%)
AVF type
Radiocephalic	102 (35%)
Brachiocephalic	161 (56%)
Transposed brachiobasilic	23 (8%)
Thigh	3 (1%)
AVG type
Forearm	32 (10%)
Upper arm	195 (63%)
Thigh	83 (27%)