title: Interpretation of concordance measures for clustered data.
authors.affiliation: Department of Public Health, Erasmus MC, Rotterdam, The Netherlands.
authors.forename: David
authors.initials: D
authors.lastname: van Klaveren
authors.forename: Ewout W
authors.initials: EW
authors.lastname: Steyerberg
authors.forename: Yvonne
authors.initials: Y
authors.lastname: Vergouwe
mesh_terms: D016000:Cluster Analysis; D005260:Female; D006801:Humans; D009369:Neoplasms / Q000473:pathology*; D011379:Prognosis