Variable | Moderate COPD | Severe/very severe COPD | Severe/very severe vs. moderate COPD | |
---|---|---|---|---|
 | LSM (SE) (N = 9) | LSM (SE) (N = 8) | Difference in LSM (SE) | 95% CI |
Emitted dose in lungs, % | 35.8 (5.7) | 30.1 (6.1) | − 5.8 (8.3) | − 24.1, 12.6 |
Emitted dose in oropharyngeal  + stomach regions, % | 63.6 (5.5) | 69.0 (5.9) | 5.3 (8.1) | − 12.5, 23.1 |
Emitted dose in exhalation filter, % | 0.5 (0.3) | 1.0 (0.3) | 0.5 (0.5) | − 0.6, 1.5 |
Ex-valve dose on actuator, % | 12.2 (0.6) | 10.4 (0.6) | − 1.8 (0.8) | − 3.6, 0.04 |
Regional airway deposition ratio: | ||||
 O/I | 0.95 (0.11) | 1.08 (0.12) | 0.13 (0.16) | − 0.23, 0.48 |
 C/P | 0.99 (0.21) | 0.86 (0.23) | − 0.13 (0.31) | − 0.82, 0.56 |
 PI | 0.48 (0.05) | 0.60 (0.06) | 0.11 (0.08) | − 0.06, 0.28 |
 sC/P | 2.49 (0.51) | 1.96 (0.55) | − 0.53 (0.75) | − 2.18, 1.12 |