Lie, Stein Atle Dependency issues in survival analyses of 55,782 primary hip replacements from 47,355 patients. [electronic resource] - Statistics in medicine Oct 2004 - 3227-40 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0277-6715 Standard No.: 10.1002/sim.1905 doi Subjects--Topical Terms: AgedArthroplasty, Replacement, Hip--standardsFemaleHip Prosthesis--standardsHumansMaleNorwayProportional Hazards Models