title: [Number needed to treat--a statistical case study].
authors.forename: Jørgen
authors.initials: J
authors.lastname: Nexøe
authors.forename: Ivar Sønbø
authors.initials: IS
authors.lastname: Kristiansen
mesh_terms: D006801:Humans; D015994:Incidence; D015233:Models, Statistical; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*; D018401:Sample Size