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July 19, 2000

Assessing Prevention Interventions by "Number Needed to Treat"

Author Affiliations

Stephen J.LurieMD, PhD, Contributing EditorIndividualAuthor

JAMA. 2000;284(3):303-305. doi:10.1001/jama.284.3.303

To the Editor: Dr Kumana and colleagues1 explained that "another useful comparative term is the number (of persons) needed to treat over a given period to prevent 1 person from experiencing an event . . . ." The critical word "additional" should be added before the word "person," and the phrase "in comparison with control treatments" should be added at the end of the phrase.