Fig. 1

Subtype distribution per recruitment year in the etanercept cohort. sJIA, systemic juvenile idiopathic arthritis; RF-neg PA, rheumatoid factor-negative polyarthritis; RF-pos PA, rheumatoid factor-positive polyarthritis; poJIA, persistent oligoarthritis; eoJIA, extended oligoarthritis; ERA, enthesitis-related arthritis; PsA, psoriatic arthritis; unclass JIA, unclassified juvenile idiopathic arthritis