Antibiotics v placebo or other antibiotics for acute maxillary sinusitis*
| Outcomes | Comparison (no. of RCTs) | Weighted event rates | RBI (95% CI) | NNT (CI) |
|---|---|---|---|---|
| Clinical cure rate | Penicillin v control (2) | 35% v 19% | 72% (0 to 196) | 7 (4 to 39) |
| RRR (CI) | ||||
|---|---|---|---|---|
| *RCTs=randomised controlled trials. Other abbreviations defined in glossary; RRR, RBI, NNT, and CI calculated from data in article. | ||||
| Dropouts from adverse events | Macrolide/ cephalosporin v amoxicillin- clavulanate (9) | 2% v 4% | 56% (22 to 75) | 44 (25 to 200) |