Diagnosis | All patients (n) | RF+ (n) | Patients with early disease (<12 months) (n) | RF+ (n) |
---|---|---|---|---|
Rheumatoid arthritis | 160 | 129 | 52 | 39 |
Undifferentiated monoarhtritis | 13 | 4/11a | 8b | 2/6a |
Undifferentiated oligoarthritis | 9 | 2 | 4b | 1 |
Undifferentiated polyarthritis | 7 | 2 | 5c | 1 |
Juvenile idiopathic arthritis | 9 | 4 | 0 | 0 |
Adult Still's disease | 1 | 0 | 0 | 0 |
Undifferentiated spondylarthritis | 4 | 0 | 2 | 0 |
Psoriatic arthritis | 12 | 0 | 2 | 0 |
Ankylosing spondylitis | 1 | 0 | 0 | 0 |
Ulcerative colitis | 2 | 0/1d | 1 | 0 |
Undifferentiated systemic inflammatory disease with arthritis | 1 | 0 | 0 | 0 |
Systemic lupus erythematosus | 3 | 0 | 1 | 0 |
Cutaneous PAN with arthritis | 1 | 0 | 0 | 0 |
Osteoarthritis | 4 | 4 | 1 | 1 |
Healthy individuals | 10 | ND | NA | NA |
Sum | 237 | 141 | 76 | 42 |