From: Reliever salbutamol use as a measure of exacerbation risk in chronic obstructive pulmonary disease
Mean reliever use (inhalations/day) | BUD/FORM (n = 349) | FORM (n = 325) | P valuea |
---|---|---|---|
Patients with cut-point inhalations/day, n (%) | |||
<2 | 114 (32.7) | 79 (24.3) | 0.017 |
≥2 | 235 (67.3) | 246 (75.7) | 0.017 |
≥6 | 111 (31.8) | 136 (41.8) | 0.007 |
≥10 | 27 (7.7) | 65 (20.0) | <0.001 |