Comparison of Clinical Symtoms and Lung functions
| Males COPD | Female COPD | p value | |
| Cough | 87 (76.5%) | 67 (78.8) | NS |
| Wheeze | 34 (29.5%) | 20 (23.5%) | NS |
| Dsypnea | 108 (93.9%) | 83 (97.6%) | |
| Post FEV1 Mean (SD) | 48.6 (16) | 44.7 (15.1) | p=0.08 |
| Post FEV1/FVC Mean (SD) | 52.9 (11) | 56.5 (9.4) | p=0.01 |
| BMI Mean | 19.4 (3.8) | 18.6 (3.6) | NS |
| 6MWD Mean (SD) | 386 (87) | 332 (80) | p=0.00 |