|Outcomes||ARR favouring salmeterol (95% CI)||NNT (CI)†|
|†Abbreviations defined in glossary; †CI calculated from data in article.|
|Any exacerbation||2.7% (0.4 to 5.04)||37 (20 to 233)|
|Moderate or severe exacerbation||2.4% (0.2 to 4.6)||41 (22 to 417)|
Review: addition of salmeterol leads to improved lung function and fewer exacerbations in symptomatic asthma
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