| SGRQ Total Score | 6MWD | MRC Dyspnea Scale |
---|
6MWD | − 0.53* | NA | NA |
MRC Dyspnea Scale | 0.6* | − 0.35* | NA |
PSSS-severity | 0.76* | − 0.46* | 0.45* |
PSSS-frequency | 0.76* | − 0.4* | 0.45* |
- 6MWD 6-minute walk distance, MRC Medical Research Council, SGRQ St. George’s Respiratory Questionnaire, PSSS Pulmonary Symptom Severity Score (contains two components -severity and -frequency)
- *Significant at p < 0.001