Table 1.

Baseline patient characteristics by management strategya

Revascularization (n = 2326)Amputation (n = 1495)No Intervention (n = 1978)
eGFR ml/min per 1.73 m2 (%)
    ≥60685354
    30 to 59252932
    15 to 29377
    <15 not on dialysis0.522
    dialysis496
Mean age ± SD (yr)67±1071±10c70±11c
Black (%)1829d20
Diabetes (%)5371d67d
Hypertension (%)8185c87d
Coronary artery disease (%)565962d
Congestive heart failure (%)2642d40d
Cerebrovascular disease (%)2337d29d
Chronic obstructive pulmonary disease393842e
Initial presentationb
Rest pain42622
Ischemic ulceration322249
Gangrene267229
  • a All comparisons are with the referent category with a GFR ≥60 ml/min per 1.73 m2. Column totals may not sum to 100% because of rounding. eGFR, estimated GFR.

  • b Overall χ2 test for presentation P < 0.001.

  • c P < 0.01.

  • d P < 0.001.

  • e P < 0.05.