title: Statistical methodology is crucial in prognostic factor analysis of health-related quality of life.
authors.affiliation: Quality of Life Department, European Organization for Research and Treatment of Cancer, Brussels, Belgium. Murielle.Mauer@eortc.be
authors.forename: M E
authors.initials: ME
authors.lastname: Mauer
authors.forename: A
authors.initials: A
authors.lastname: Bottomley
authors.forename: C
authors.initials: C
authors.lastname: Coens
mesh_terms: D005163:Factor Analysis, Statistical; D006801:Humans; D009369:Neoplasms / Q000401:mortality / Q000523:psychology; D011379:Prognosis; D011788:Quality of Life; D018434:Sickness Impact Profile; D016019:Survival Analysis