Table 3:Correlation (r) between the 6MWT variation with the variations of BAI and BDI, in general and by COPD staging.
| General n = 163 | Mild n = 9 | Moderate n = 53 | Severe n = 58 | Very Severe n = 43 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| BAI | BDI | BAI | BDI | BAI | BDI | BAI | BDI | BAI | BDI | |
| r | -0.04 | 0.023 | 0.092 | 0.542 | -0.207 | 0.003 | 0.099 | -0.084 | -0.095 | 0.025 |
| p | 0.616 | 0.77 | 0.813 | 0.132 | 0.137 | 0.98 | 0.459 | 0.531 | 0.543 | 0.874 |
p = probability value; r = Pearson-Bravais correlation value.