Table 2.
Characteristics of the study population (validation study)
| All patients at baseline | |||
|---|---|---|---|
| n = 103 | % | ||
| Stage of PAD, n (%) | I | 1 | 1.0 |
| IIa | 9 | 8.7 | |
| IIb | 60 | 58.3 | |
| III | 12 | 11.7 | |
| IV | 18 | 17.5 | |
| Missing | 3 | 2.9 | |
| Sex, n (%) | Male | 70 | 68.0 |
| Female | 33 | 32.0 | |
| Age (years) | Mean ± SD | 68.6 ± 10.2 | |
| Treatment | Bypass surgery | 12 | 11.7 |
| Bypass recanalization | 2 | 1.9 | |
| Bypass and thromboendarterectomy | 1 | 1.0 | |
| Thromboendarterectomy | 35 | 34.0 | |
| Amputation | 1 | 1.0 | |
| Percutaneous transluminal angioplasty | 39 | 37.9 | |
| Urokinase and Percutaneous transluminal angioplasty | 1 | 1.0 | |
| Sympathectomy | 1 | 1.0 | |
| Structured vascular exercise | 4 | 3.9 | |
| Prostaglandin E1 | 2 | 1.9 | |
| Missing | 5 | 4.9 | |
Baseline: first measurement; n: number of patients; PAD: peripheral artery disease; SD: standard deviation. PAD stage was classified according to Fontaine, with 1–5 denoting stage I–IV, respectively [3]