Pooled difference (95% CI) using weighted standard deviation
| Outcome measures | 200 v 500 µg/day | 500 v 1000 µg/day | 200 v ⩾500 µg/day | 200 v 1000 µg/day |
|---|---|---|---|---|
| FEV1 = forced expiratory volume in 1 second; amPEF = morning peak expiratory flow. | ||||
| FEV1 (l) | 0.02 (−0.07 to 0.11) | 0.07 (−0.01 to 0.14) | 0.13 (0.03 to 0.24) | |
| amPEF (l/min) | 2.9 (−8.2 to 14.9) | 7.5 (−2.8 to 17.4) | 5.9 (−3.0 to 15.3) | 10.4 (−1.4 to 22.6) |
| β agonist use (puffs/day) | 0.07 (−0.38 to 0.53) | −0.05 (−0.34 to 0.25) | −0.23 (−0.65 to 0.18) | |