Difference between effect of salmeterol and placebo on lung function and volume parameters after 12 months of treatment
| Parameter | Treatment difference(salmeterol–placebo) | p value | 95% CI |
|---|---|---|---|
| FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; IC, inspiratory capacity; MMEF, maximum mid-expiratory flow; SVC, slow vital capacity. | |||
| FEV1 | 120 ml | <0.0001 | 60 to 170 |
| FVC | 120 ml | 0.010 | 30 to 210 |
| IC | 140 ml | 0.035 | 10 to 270 |
| MMEF | 150 ml/s | 0.0005 | 70 to 240 |
| SVC | 150 ml | 0.022 | 20 to 280 |