title: The utility of futility.
authors.forename: Bruce
authors.initials: B
authors.lastname: Levin
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods*; D004992:Ethics, Medical; D006801:Humans; D007511:Ischemia / Q000628:therapy*; D018447:Medical Futility; D015233:Models, Statistical; D011788:Quality of Life; D012107:Research Design; D018401:Sample Size; D012680:Sensitivity and Specificity; D020521:Stroke / Q000628:therapy*; D016896:Treatment Outcome