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Epidemiology of JIA

Comparison of epidemiological studies of JIA is challenging due to many influencing factors, mainly differences in classification criteria or study designs (e.g. population-based, hospital-based, questionnaires, registry data). Recently, longitudinal cohort studies have provided important contributions to the understanding of the disease course of JIA in the long run. Latest advances in research of incidence and prevalence of JIA will be highlighted and discussed to facilitate understanding the consequences of epidemiological knowledge of the disease.

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P. Lahdenne Speakers Bureau of: Consultancy and speaker’s fees from Pfizer, Abbvie, Roche, Novartis

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This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.

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Lahdenne, P. Epidemiology of JIA. Pediatr Rheumatol 12 (Suppl 1), I15 (2014).

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