CET time | 6MWT | SGRQ Symptoms | SGRQ Activity | SGRQ Impact | SGRQ Total | |
CET time | × | 0.19* | −0.08 | −0.21* | −0.15 | −0.18* |
6MWT | – | × | 0.05 | −0.41† | −0.26‡ | −0.28§ |
CET, constant work rate cycle endurance test; 6MWT, 6-min walking test, SGRQ, St George Respiratory Questionnaire.
*p<0.05; †p<0.0001; ‡p<0.005; §p<0.0005.