| COPD category | SABA (%) | SAMA (%) | LABA (%) | LAMA (%) | ICS/LABA (%) | ICS (%) | Theophylline (%) | Mucolytic (%) |
| Mild | 74% (70) | 14% (16) | 4% (10) | 28% (24) | 41% (32) | 23% (31) | 4% (6) | 6% (4) |
| Moderate | 82% (78) | 18% (19) | 4% (12) | 38% (41) | 60% (43) | 23% (32) | 7% (9) | 9% (8) |
| Severe | 91% (86) | 18% (19) | 7% (15) | 55% (52) | 75% (54) | 24% (31) | 17% (19) | 25% (12) |
| FEV1 >80% | 67% (59) | 8% (12) | 5% (6) | 27% (20) | 37% (26) | 19% (24) | 3% (5) | 5% (2) |
COPD, chronic obstructive pulmonary disease; ICS, inhaled corticosteroids; LABA, long-acting beta agonists; LAMA, long-acting anticholinergics; SABA, short-acting beta agonists; SAMA, short-acting anticholinergics.