Classification of the 87 investigator-reported pneumonia events in the Investigating New Standards for Prophylaxis in Reduction of Exacerbations (INSPIRE) trial by chest radiographic confirmation
| Number (%) | Fluticasone–salmeterol | Tiotropium |
|---|---|---|
| Investigator-reported pneumonias | 62 | 25 |
| Chest radiograph confirmation | 36 (58) | 14 (56) |
| Not confirmed by chest radiograph | 11 (18) | 3 (12) |
| No chest radiograph | 15 (24) | 8 (32) |