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. Author manuscript; available in PMC: 2023 Jul 19.
Published in final edited form as: Nat Rev Rheumatol. 2021 Mar 17;17(5):257–269. doi: 10.1038/s41584-021-00590-6

Figure 1. Epidemiology of juvenile idiopathic arthritis.

Figure 1.

Age of onset in 1081 children with arthritis evaluated in the Pediatric Rheumatology Clinic at The Hospital for Sick Children, Toronto, Canada. Note the paucity of JIA onset in the first year of life; the incidence peak in girls between age 1 and 4; and the relatively balanced gender ratio of arthritis that begins in adolescence. Modified from ref 139.