Features/Subset | Systemic Arthritis, n = 19 | OLA-P, n = 39 | OLA-E, n = 10 | Polyarthritis, RF−, n = 41 | Polyarthritis RF+, n = 28 | Psoriatic Arthritis, n = 3 | Enthesitis-related Arthritis, n = 84 | UnA, n = 11 |
---|---|---|---|---|---|---|---|---|
JRA systemic arthritis n = 19 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
JRA OLA, n = 65 | 0 | 38 | 10 | 0 | 0 | 0 | 11 | 6 |
JRA-polyarthritis, n = 76 | 1 | 0 | 0 | 39 | 27 | 0 | 9 | 0 |
UnA: undifferentiated arthritis; ACR: American College of Rheumatology; ILAR: International League of Associations for Rheumatology.