Evid Based Nurs 4:111 doi:10.1136/ebn.4.4.111
  • Treatment

Combined permethrin (PER) and trimethoprim/sulfamethoxazole (TMP/SMX) was better than PER alone but not better than TMP/SMX alone for treating head lice infestation in children

Combined 1% permethrin creme rinse (PER) and trimethoprim/sulfamethoxazole (TMP/SMX) v PER alone for head lice infestation (HLI) in children†

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)

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