Table 4 Correlations between questionnaire responses, quality of life and respiratory function in patients with COPD (N = 93)
| Â | CCQ Total | CCQ Symptoms | CCQ Function | CCQ Mental | FEV1 | FEV1/FVC | SF |
|---|---|---|---|---|---|---|---|
CCQ Total | 1 | 0.915** | 0.953** | 0.842** | -0.252* | -0.135 | -0.384** |
CCQ Symptoms | 0.915** | 1 | 0.779** | 0.685** | -0.230* | -0.100 | -0.292** |
CCQ Function | 0.953** | 0.779** | 1 | 0.754** | -0.260 | -0.145 | -0.435** |
CCQ Mental | 0.842** | 0.685** | 0.754** | 1 | -0.164 | -0.116 | -0.267** |
FEV1 | -0.252* | -0.230* | -0.260* | -0.164 | 1 | 0.358** | 0.538** |
FEV1/FVC | -0.135 | -0.100 | -0.145 | -0.116 | 0.358** | 1 | 0.345** |
SF | -0.384** | -0.292** | -0.435** | -0.267** | 0.538** | 0.345** | 1 |