| SGRQ | MRC | HADS |
---|
 | symptom | activity | impacts | total |  | anxiety | depression |
---|
FEV1
| -0.24 | -0.41 | -0.29 | -0.36 | -0.37 | -- | -- |
RV/TLC | -- | 0.40 | -- | 0.29 | 0.46 | -- | -- |
DLCO/VA
| -- | -- | -- | -- | -- | -- | -- |
R20 | -- | -- | -- | -- | -- | -- | -- |
R5-R20 | 0.31 | 0.49 | 0.44 | 0.49 | 0.51 | -- | -- |
X5 | -0.27 | -0.51 | -0.38 | -0.46 | -0.46 | -- | -- |
LAA% | -- | 0.27 | -- | -- | 0.41 | -- | -- |
WA% | -- | -- | -- | -- | -- | -- | -- |
- All values represent correlation coefficient (r).
- Missing data (--) indicate that there were no statistically significant relationships.
- FEV1 = forced expiratory volume in one second; RV = residual volume; TLC = total lung capacity; DLCO = carbon monoxide diffusing capacity; VA = alveolar volume R = resistance; X = reactance; LAA = low attenuation area; WA = wall area; SGRQ = St. George's Respiratory Questionnaire; MRC = Medical Research Council; HADS = Hospital Anxiety and Depression Scale