Physician verbal advice plus an information leaflet v verbal advice alone for acute bronchitis‡

Outcome at 2 weeksVerbal advice plus leafletVerbal advice aloneRRR (95% CI)NNT (CI)
‡Abbreviations defined in glossary; RRR and CI calculated from data in article.
Antibiotic use47%62%24% (3 to 42)7 (4 to 63)