|Comparison||Event rates||RBI (95% CI)||NNT (CI)|
|†Abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article.|
|Heat + ibuprofen v control||68% v 35%||94% (4 to 289)||3 (2 to 28)|
|Heat alone v control||70% v 35%||100% (9 to 298)||3 (2 to 18)|
Continuous topical heat was as effective as ibuprofen for dysmenorrhoea
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