Table 4.
Correlation of the QOLPAD with convergent criteria at baseline and distribution of convergent criteria
| r | p | n | Mean | Median | Minimum | Maximum | |
|---|---|---|---|---|---|---|---|
| EQ-5D-3L | − 0.62 | < 0.001 | 99 | 0.57* | 0.59 | 0.08 | 1.0 |
| EQ VAS | − 0.44 | < 0.001 | 100 | 55.0* | 50.0 | 10.0 | 97.0 |
| VascuQoL | − 0.77 | < 0.001 | 101 | 3.8 | 3.8 | 1.6 | 6.6 |
| Stage of PAD | 0.40 | < 0.001 | 98 | 3.4* | 3.0 | 1 | 5 |
| Global rating of impairment | 0.64 | < 0.001 | 100 | 2.9* | 3.0 | 0 | 4 |
Baseline: first measurement, r: Spearman’s correlation coefficient, p: level of significance, n: number of patients; EQ VAS: EuroQol visual analogue scale, VascuQoL: Vascular Quality of Life Questionnaire, PAD: peripheral artery disease
The stage of PAD was classified according to Fontaine, with 1–5 denoting stage I–IV, respectively [3]
*Variables not normally distributed