Responsiveness of c-LRTI-VAS according to GOLD stages
| c-LRTI-VAS T=0 | c-LRTI-VAS t=30 | Difference | P value | |
| GOLD I (n=6) | 22.5 (22.0–24.0) | 9.5 (2.5–23.0) | −13.0 (-19.5;−1.0) | 0.075 |
| GOLD II (n=32) | 23.5 (19.5–26.5) | 16.0 (5.5–24.5) | −7.5 (-14.0;−2.0) | <0.001 |
| GOLD III (n=35) | 24.0 (19.0–27.0) | 17.5 (7.0–26.0) | −6.5 (-12.0;−1.0) | 0.001 |
| GOLD IV (n=13) | 24.0 (21.0–27.5) | 16.0 (5.0–27.5) | −8.0 (-16;0.0) | 0.013 |
All data are represented as median (IQR).
c-LRTI-VAS, COPD-lower respiratory tract infections-Visual Analogue Score; GOLD, Global initiative for chronic Obstructive Lung Disease.