Table 3 Analysis of the relationships of health status and dyspnea to pulmonary function, IOS and CT by stepwise multiple regression analyses
| Â | SGRQ | ||||
|---|---|---|---|---|---|
| Â | symptoms | activity | impacts | total | MRC |
Independent variables | Â | Â | Â | Â | Â |
FEV1 | -- | -- | -- | -- | 0.03 |
RV/TLC | -- | 0.02 | -- | -- | 0.02 |
R5-R20 | 0.09 | -- | 0.19 | 0.24 | 0.27 |
X5 | -- | 0.26 | -- | -- | -- |
LAA% | -- | -- | -- | -- | 0.06 |
Cumulative r2 | 0.09 | 0.28 | 0.19 | 0.24 | 0.38 |