Table 2 Correlations between the initial score of the four domains of CRQ and selected parameters
| Â | Dyspnea* | Fatigue* | Emotion* | Mastery* |
|---|---|---|---|---|
Age | 0.02 (0.88) | 0.07 (0.65) | 0.05 (0.75) | 0.11 (0.49) |
Disease duration | -0.23 (0.13) | -0.35 (0.02) | -0.25 (0.10) | -0.09 (0.58) |
Number of exacerbations over twelve months | -0.36 (0.02) | -0.02 (0.88) | -0.002 (0.99) | -0.07 (0.66) |
Number of admissions over twelve months | -0.18 (0.23) | -0.06 (0.68) | -0.03 (0.85) | -0.20 (0.18) |
Smoking history (Pack-year) | -0.04 (0.77) | -0.17 (0.26) | -0.13 (0.39) | -0.20 (0.19) |
The percentage of Forced Expiratory volume in one second (FEV1) | 0.08 (0.59) | 0.18 (0.25) | -0.07 (0.64) | 0.02 (0.91) |
FEV1/FVC ratio | -0.02 (0.91) | -0.20 (0.19) | -0.30 (0.05) | -0.27 (0.07) |
Six minutes walk distance (meter) | -0.02 (0.92) | 0.06 (0.69) | 0.05 (0.76) | -0.05 (0.76) |
Body mass index | -0.12 (0.45) | -0.26 (0.08) | -0.10 (0.50) | 0.0 (1.00) |