Trough FEV1 and FVC least square mean treatment difference (SE) from placebo (mL)
| FEV 1 | FVC | |||
|---|---|---|---|---|
| Glycopyrronium | Tiotropium | Glycopyrronium | Tiotropium | |
| Day 1 | 98 (7.7) | 88 (11.5) | 187 (15.1) | 178 (22.7) |
| Week 12 | 103 (11.2) | 88 (16.7) | 190 (21.5) | 172 (32.0) |
| Week 26 | 125 (12.6) | 78 (18.6) | 205 (22.7) | 133 (33.9) |
| Week 52 | 108 (19.5) | 89 (22.3) | 179 (34.4) | 180 (39.4) |