Table 3.
Association between disease characteristics and quality of life scores in chronic obstructive pulmonary disease cases
| Variable | n | D1 |
D2 |
D3 |
D4 |
||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||
| Duration of illness (years) | |||||||||
| <1 | 23 | 62.1 | 20.0 | 57.9 | 17.5 | 53.8 | 24.2 | 56.3 | 15.9 |
| >1 | 27 | 36.4 | 11.9 | 37.7 | 10.8 | 35.5 | 9.7 | 40.8 | 10.1 |
| Unpaired t-test P value LS | 0.000 (HS) | 0.000 (HS) | 0.000 (HS) | 0.000 (HS) | |||||
| Severity of illness | |||||||||
| Mild | 3 | 73 | 22.0 | 60.6 | 14.4 | 68.6 | 38.9 | 60.6 | 19.8 |
| Moderate | 13 | 62.6 | 16.2 | 60.1 | 17.6 | 57.2 | 7.4 | 55.9 | 16.5 |
| Severe | 23 | 43.0 | 18.9 | 43 | 14.4 | 40.0 | 16.2 | 46.4 | 13.8 |
| Very severe | 11 | 35.5 | 13.4 | 36.2 | 13.0 | 29.6 | 5.6 | 38.2 | 7.6 |
| ANOVA test P value and LS | 0.000 (HS) | 0.000 (HS) | 0.000 (HS) | 0.011 (S) | |||||
LS: Level of significance, SD: Standard deviation, HS: High significance, S: Significance, ANOVA: Analysis of variance