From: Development, validity and responsiveness of the Clinical COPD Questionnaire
Clinical COPD Questionnaire | ||||
---|---|---|---|---|
Symptom | Functional state | Mental state | Total | |
SGRQ | ||||
Symptoms | 0.75** | 0.49** | 0.60** | 0.72** |
Activity | 0.25 | 0.69** | 0.52** | 0.53** |
Impact | 0.47** | 0.69** | 0.61** | 0.67** |
Total | 0.51** | 0.75** | 0.67** | 0.71** |