1987 Revised Classification Criteria
Rheumatoid Arthritis (1987 Revised Classification Criteria)
- Morning stiffness (in/around joints, at least 1 hour before maximal improvement)
- Arthritis (swelling) of 3 or more joint areas (observed by a physician)
- Symmetric arthritis (swelling, NOT bony overgrowth)
- Arthritis of Hand joints (wrists, MCPs or PIPs)
- Rheumatoid nodules
- Rheumatoid factor (serum)
- Radiographic changes (erosions and/or periarticular osteopenia in hand/wrist joints)
Requirements
≥ 4 of the above 7 criteria. Criteria 1-4 must have been present for at least 6 weeks.
Reference
Arnett et al. The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis. Arthritis Rheum 1988;31:315-324
ACR/EULAR (2010) Classification Criteria for RA
Symptom Duration (as reported by patient) | Points |
---|---|
< 6 Weeks | 0 |
> 6 Weeks | 1 |
Joint Distribution | Points |
---|---|
1 large joint | 0 |
2-10 large joints | 1 |
1-3 small joints (with or without involvement of large joints) | 2 |
4-10 small joints (with or without involvement of large joints) | 3 |
> 10 joints (at least 1 small joint) | 5 |
Serology | Points |
---|---|
RF- and CCP- | 0 |
Low RF+ or CCP+ | 2 |
High RF+ or CCP+ | 3 |
Acute Phase Reactants | Points |
---|---|
Normal ESR or CRP | 0 |
Abnormal ESR or CRP | 1 |
RF: rheumatoid factor. CCP: anti-citrullinated citric peptide. ESR: erythrocyte sedimentation rate. CRP: C-reactive protein. Low: < 3 x upper limit of normal (ULN). High: > 3 x ULN
Requirements
Patients who have at least 1 swollen joint, and not better explained by another disease to be applied. A score ≥ 6 points is required for classification as definite RA.
Reference
Aletaha et al. 2010 Rheumatoid arthritis classification criteria: an American College of Rheumatology/European League Against Rheumatism collaborative initiative. Ann Rheum Dis 2010;69:1580-1588.