No Amputation Amputation P value
Number of patients 110 18  
Mean age (y) (+) SD 61.1( 14.7 ) 63.0 ( 15.8 ) 0.759
Sex (%F/M) 61/64 3/18 0.053
Smoker 64/110 13/18 0.265
Diabetes mellitus 57/110 8/18 0.774
Hypertension 55/110 10/18 0.662
Coronary artery disease 16/110 2/18 0.699
Congestive heart failure 3/110 1/18 0.533
Cerebrovascular disease 7/110 4/18 0.037
Renal insufficiency 13/110 3/18 0.566
Most severe symptom (claudication) 26/110 3/18   0.626
Most severe symptom (rest pain) 11/110 3/18
Most severe symptom (tissue loss) 73/110 12/8
Number of disease ( unilevel ) 3/110 1/18 0.756
Number of disease ( multilevel) 107/110 17/18
Mean ABI/ contralateral ABI 0.53/0.86 0.46/0.82 0.417,0.532
Poorly controlled DM 14/71 3/12 0.046
Table 1: Patient baseline characteristics.