Estudio epidemiológico de artritis idiopática juvenil en el Principado de Asturias: presentación de la casuística en los últimos dieciséis años

An incidence rate of 3.5/105 and a prevalence rate of 51.4/105 children and adolescents aged less than 16 years old in Asturias were calculated (taking into account the possible bias of our study). The most frequent form of onset was persistent oligoarticular arthritis and the most commonly involved joints were the knees.