Skip to main content

Table 4 Correlation of the QOLPAD with convergent criteria at baseline and distribution of convergent criteria

From: Development and validation of a disease-specific quality of life questionnaire for patients with peripheral artery disease (QOLPAD)

 

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

  1. 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
  2. The stage of PAD was classified according to Fontaine, with 1–5 denoting stage I–IV, respectively [3]
  3. *Variables not normally distributed