Baseline characteristics of participants in different ABI groups
| 1.1<ABI≤1.3 (N=99) | 0.9<ABI≤1.1 (N=139) | ABI≤0.9 (N=76) | p Value | |
|---|---|---|---|---|
| Age (years) | 70±12 | 69±11 | 68±11 | 0.319 |
| Male, n (%) | 44 (44.4%) | 58 (41.7%) | 33 (43.4%) | 0.913 |
| Body weight (kg) | 66.8±13.7 | 67.5±14.3 | 65.0±10.8 | 0.538 |
| Systolic BP (mm Hg) | 141±17 | 139±21 | 147±27* | 0.034 |
| Diastolic BP (mm Hg) | 78±12 | 76±11 | 77±13 | 0.300 |
| Fasting glucose (mmol/L) | 11±10 | 10±6 | 9±6 | 0.411 |
| eGFR (mL/min/1.73 m2) | 59±27 | 58±29 | 57±24 | 0.840 |
| Total cholesterol (mmol/L) | 4.3±0.9 | 4.2±1.0 | 4.5±1.2 | 0.240 |
| HDL cholesterol (mmol/L) | 1.3±0.4 | 1.2±0.4 | 1.2±0.4 | 0.487 |
| Triglyceride (mmol/L) | 1.5±0.7 | 1.8±1.4 | 1.8±1.4 | 0.345 |
| ABI | 1.2±0.0 | 1.0±0.1† | 0.7±0.1*,† | <0.001 |
| baPWV (cm/s) | 1979±429 | 1887±433 | 2010±683 | 0.169 |
| %MAP | 39.7%±4.0% | 40.4%±4.3% | 48.4%±5.8%*,† | <0.001 |
| UT (ms) | 151±25 | 160±33 | 214±50*,† | <0.001 |
| Diabetes mellitus, n (%) | 78 (78.8) | 107 (77.0) | 59 (77.6) | 0.947 |
| CAD, n (%) | 16 (16.2) | 23 (16.5) | 21 (27.6) | 0.095 |
*Significantly different from the 0.9<ABI≤1.1 group.
†Significantly different from the 1.1<ABI≤1.3 group.
%MAP, percentage of mean arterial pressure; ABI, ankle-brachial index; baPWV, brachial-ankle pulse wave velocity; BP, blood pressure; CAD, coronary artery disease; eGFR, estimated glomerular filtration rate; HDL, high-density lipoprotein; PWV, pulse wave velocity; UT, upstroke time.