Percentage of change in FEV1 for cardioselective β-blockers v placebo in chronic obstructive pulmonary disease†
| Type of treatment | Number of trials | Follow-up | WMD (95% CI) |
|---|---|---|---|
| †WMD = weighted mean difference; other abbreviations defined in glossary. All analyses used a fixed-effects model. | |||
| Single dose | 2 (n = 50) | {1 to 6 h}* | −2.05 (−6.05 to 1.96) |
| Longer duration | 4 (n = 140) | 1 to 8 wk | −2.55 (−5.94 to 0.84) |