Drug classes vs placebo for improvement in dyspeptic symptom scores*

Weighted event rates
Drug classNumber of trialsNumber of patientsActive drugPlaceboRBI (95% CI)NNT (CI)
*H2RAs = histamine-2 receptor antagonists. Treatment duration was 2 to 6 weeks for prokinetics and H2RAs and 4 weeks for pirenzepine. Other abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article.
†11 of the 12 prokinetics trials evaluated cisapride.
Prokinetics†1282975%44%50% (30 to 65)4 (3 to 6)
H2RAs8122571%51%30% (4 to 48)6 (5 to 9)
Antimuscarinics (pirenzepine)216379%58%50% (19 to 69)5 (3 to 14)