Comparison of adjusted geometric means of urinary excretion data by pairwise t-test
| Active ingredient | Doses µg | Devices | Adjusted geometric means of urinary excretion | p-value |
| Fenoterol | 50/50 | Respimat®/MDI | 555.7/340.0 | 0.0632 |
| 100/100 | Respimat®/MDI | 984.5/560.0 | 0.0594 |
MDI: metered dose inhaler.