Population trends in the incidence and initial management of osteoarthritis : age-period-cohort analysis of the Clinical Practice Research Datalink, 1992-2013 - Yu, Dahai (Research Institute for Primary Care & Health Sciences, Keele University, Keele, UK) ; Jordan, Kelvin P.. (Research Institute for Primary Care & Health Sciences, Keele University, Keele, UK) ; Bedson, John (Research Institute for Primary Care & Health Sciences, Keele University, Keele, UK) ; Englund, Martin (Clinical Epidemiology Research & Training Unit, Boston University School of Medicine, Boston, MA, USA) ; Blyth, Fiona (Concord Clinical School, Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia) ; Turkiewicz, Aleksandra (Clinical Epidemiology Unit, Orthopaedics, Department of Clinical Sciences Lund, Lund University, Lund, Sweden) ; Prieto-Alhambra, Daniel (Institut Universitari d'Investigació en Atenció Primària Jordi Gol) ; Peat, George (Research Institute for Primary Care & Health Sciences, Keele University, Keele, UK) ; Universitat Autònoma de Barcelona