Model I (dyspnea) | Model II (HRQL) | Model III (psychological status) | |||||||
---|---|---|---|---|---|---|---|---|---|
HR | 95% CI | p-value | HR | 95% CI | p-value | HR | 95% CI | p-value | |
Age, years | 1.04 | 1.01–1.06 | 0.007 | 1.03 | 1.01–1.06 | 0.010 | 1.04 | 1.01–1.06 | 0.002 |
Interstitial lung disease | 2.41 | 1.38–4.21 | 0.002 | 2.24 | 1.32–3.78 | 0.003 | 2.10 | 1.26–3.51 | 0.005 |
PaCO2, mmHg | 1.00 | 0.97–1.03 | 0.950 | 1.00 | 0.97–1.04 | 0.840 | 1.00 | 0.96–1.03 | 0.830 |
FVC, %predicted | 0.98 | 0.96–1.00 | 0.016 | 0.99 | 0.97–1.01 | 0.150 | 0.98 | 0.96–0.99 | 0.002 |
mMRC dyspnea | 1.36 | 1.02–1.81 | 0.037 | ||||||
SGRQ total | 1.03 | 1.01–1.05 | 0.0014 | ||||||
HADS anxiety | 1.05 | 0.95–1.15 | 0.330 | ||||||
HADS depression | 1.00 | 0.93–1.07 | 0.970 |