Formoterol v terbutaline for moderate to severe asthma
‡
Outcome at 12 months
Formoterol
Terbutaline
RRR (95% CI)
NNT (CI)
‡Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article.
≥1 exacerbation
14%
24%
40% (7.6 to 62)
11 (6 to 66)