Paediatric JIA categories reclassified according to the adult classification criteria of chronic inflammatory rheumatic diseases in individuals with long-term follow-up
| Strong correlation between paediatric/adult classifications | Poor correlation between paediatric/adult classifications | ||
|---|---|---|---|
| Onset (n) | Long-term follow-up (n) | Onset (n) | Long-term follow-up (n) |
| Syst JIA (39) | ASD (36) 92.3%RA (2) Undiff (1) | RFneg Poly JIA (63) | RA (36) 57.1% AS (2) USpA (2) PsA (8) Undiff(15) 23.8% |
| RFpos Poly JIA (68) | RA (65) 95.6% AS (1) PsA (1) Undiff (1) | Persist Oligo JIA (66) | RA (4) AS (5) USpA (9) 13.6%EnterA (4) PsA (5) Undiff(39) 59.1% |
| ERA (76) | AS (41) USpA (21) 86.8% EnterA (4) PsA (6) Undiff (4) | Extend Oligo JIA (54) | RA (21) 38.9% AS (2) USpA (10)18.5% EnterA (1) PsA (1) Undiff(19) 35.2% |
| jPsA (13) | PsA (12) 92.3% USpA (1) | Undiff (6) | RA (3) AS (1) EnterA (1) Undiff (1) |
AS, ankylosing spondylitis; ASD, adult Still's disease; EnterA: enteropathic arthritis; ERA, Enthesitis-Related Arthritis; jPsA : juvenile Psoriatic Arthritis; Persist/Extend Oligo, persistent/extended oligoarticular JIA; PsA, psoriatic arthritis; RA, rheumatoid arthritis; RFneg Poly JIA, rheumatoid factor negative polyarticular JIA; RFpos Poly JIA, rheumatoid factor positive polyarticular JIA; Syst JIA, systemic JIA; USpA, undifferentiated spondyloarthritis; Undiff, undifferentiated arthritis.