Table 2

Clinical failure rates with antibiotics for acute bacterial rhinosinusitis (treatment range 5 days to 7 weeks)*

ComparisonNumber of trialsWeighted event ratesRRR (95% CI)NNT (CI)
*Abbreviations defined in glossary. Data provided by author.
Any v no antibiotic616% v 31%46% (21 to 63)7 (4 to 25)
Amoxicillin v other antibiotics14 9% v 11%15% (−17 to 38)Not significant
Folate inhibitors v other antibiotics913% v 11% 1% (−97 to 48)Not significant