Table 1.
Baseline Characteristics by Ankle-Brachial Index Group
| Normal N=1489 |
Low ABI N=430 |
High ABI N=182 |
NC artery N=139 |
|
|---|---|---|---|---|
| Age, mean (SD) | 61.9 (8.8) | 63.4 (8.9)† | 61.9 (8.5) | 64.2 (9.7)† |
| Female, % | 28.3 | 38.8§ | 17.6† | 30.2 |
| Black race, % | 15.2 | 27.4§ | 4.9‡ | 17.3 |
| Years with diabetes, mean (SD) | 9.7 (8.1) | 11.4 (9.0)‡ | 10.2 (9.1) | 15.1 (10)§ |
| Insulin therapy, % | 25.9 | 32.3† | 25.3 | 40.3‡ |
| Hemoglobin A1c, mean (SD) | 7.63 (1.62) | 7.79 (1.60) | 7.61 (1.70) | 7.76 (1.58) |
| Body mass index, mean (SD) | 31.5 (5.7) | 31.0 (5.7) | 33.7 (6.0)§ | 32.8 (6.7)* |
| Hypertension, % | 87.8 | 92.3† | 87.4 | 95.7† |
| Current smoking, % | 11.6 | 20.7§ | 3.8† | 7.3 |
| Hypercholesterolemia, % | 81.7 | 82.1 | 76.9 | 74.8* |
| Chronic renal dysfunction, % | 2.5 | 4.4* | 2.7 | 6.6† |
| Peripheral neuropathy, % | 24.8 | 28.1 | 28.0 | 48.9§ |
| History of CHF % | 5.1 | 11.0§ | 6.7 | 7.2 |
| CRP (log ug/ml), mean (SD) | 0.83 (1.24) | 1.04 (1.22)† | 0.82 (1.19) | 1.08 (1.41)* |
| ACR > 30 mg/g | 26.7 | 38.1§ | 26.4 | 47.5§ |
| LV ejection fraction, mean (SD) | 55.0 (16.2) | 53.5 (16.7) | 54.5 (16.5) | 49.8 (20.3)† |
| Angina | 82.1 | 81.2 | 83.0 | 88.5 |
| Myocardial jeopardy index, mean (SD) | 43.7 (24.4) | 46.8 (24.2)* | 41.4 (22.0) | 47.5 (25.1) |
| Number of diseased regions, mean (SD) | 1.9 (0.9) | 2.1 (0.8)‡ | 1.9 (0.8) | 2.0 (0.9) |
CHF indicated congestive heart failure; CRP, C reactive protein; ACR, Albumin creatinine ratio; LV, left ventricular