Classification of severity of diagnosed COPD cases
| Overall (N=144) | Men (M) (N=86) | Women (W) (N=58) | P value (M vs W) | |
| GOLD classification of severity of airflow obstruction | 0.137 | |||
| Mild GOLD 1 (FEV1 ≥80%) | 55.6% (80) | 50.0% (43) | 63.8% (37) | |
| Moderate GOLD 2 (FEV1 50%–79%) | 38.9% (56) | 45.3% (39) | 29.3% (17) | |
| Severe GOLD 3 (FEV1 30%–49%) | 4.9% (7) | 4.7% (4) | 5.2% (3) | |
| Very severe GOLD 4 (FEV1 <30%) | 0.7% (1) | 0% (0) | 1.7% (1) | |
| GOLD classification of COPD severity | 0.959 | |||
| A (less symptoms and low risk of exacerbations) | 29.2% (42) | 27.9% (24) | 31% (18) | |
| B (more symptoms; low risk of exacerbations) | 63.9% (92) | 66.3% (57) | 60.3% (35) | |
| C (less symptoms, but high risk of exacerbations) | 1.4% (2) | 1.2% (1) | 1.7% (1) | |
| D (more symptoms; high risk of exacerbations) | 5.5% (8) | 5.8%(5) | 5.1% (3) | |
COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; GOLD, Global Initiative for Chronic Obstructive Lung Disease.