Group | Depression scale | P value* (χ2) | ||||
---|---|---|---|---|---|---|
Minimal depression | Mild depression | Moderate depression | Severe depression | Total | ||
COPD | 4 (4.3%) | 14 (15.1%) | 41 (44.1%) | 34 (36.6%) | 93 (100%) | <0.001 |
Control | 71 (67.6%) | 23 (21.9%) | 6 (5.7%) | 5 (4.8%) | 105 (100%) | |
Total | 75 (37.9%) | 37 (18.7%) | 47 (23.7%) | 39 (19.7%) | 198 (100%) |