title: Dangers of using "optimal" cutpoints in the evaluation of prognostic factors.
authors.affiliation: Medical Statistics Laboratory, Imperial Cancer Research Fund, London, England.
authors.forename: D G
authors.initials: DG
authors.lastname: Altman
authors.forename: B
authors.initials: B
authors.lastname: Lausen
authors.forename: W
authors.initials: W
authors.lastname: Sauerbrei
authors.forename: M
authors.initials: M
authors.lastname: Schumacher
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D009369:Neoplasms / Q000473:pathology; D011379:Prognosis; D016196:S Phase; D012720:Severity of Illness Index; D013223:Statistics as Topic; D016019:Survival Analysis