Combined 1% permethrin creme rinse (PER) and trimethoprim/sulfamethoxazole (TMP/SMX) v PER alone for head lice infestation (HLI) in childrenâ€
| Outcomes | Combined | PER | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| †Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | ||||
| HLI at 2 weeks | 5.0% | 20.5% | 76% (6 to 94) | 7 (4 to 117) |
| HLI at 4 weeks | 7.5% | 28.2% | 73% (20 to 92) | 5 (3 to 25) |