Prevalence of symptomatic hip and knee osteoarthritis: a two-phase population-based survey1

ObjectiveOsteoarthritis (OA) epidemiologic data are scarce in Europe. To estimate the prevalence of symptomatic knee and hip OA in a multiregional sample in France.DesignA two-phase population-based survey was conducted in six regions in 2007–2009. On initial phone contact using random-digit dialing, subjects 40–75 years old were screened with a validated questionnaire. Subjects screened positive were invited for ascertainment: physical...