Independent variable | Total patients (n = 50) | |
---|---|---|
Pearson correlation | p value | |
coefficient (r) | ||
Age, year |  − 0.10 | 0.48 |
BMI, kg/m2 |  − 0.02 | 0.89 |
CAT |  − 0.34 | 0.017 |
FVC %predicted | 0.19 | 0.18 |
FEV1 %predicted | 0.45 | 0.001 |
6MWD, m | 0.28 | 0.052 |
mBorg scale dyspnoea |  − 0.34 | 0.017 |
PImax, cmH2O | 0.58 | < 0.001 |
DEmax, mm | 0.72 | < 0.001 |
QMS, kgf/kg | 0.31 | 0.028 |