Table 1

The 1987 ACR classification criteria and the 2010 ACR/EULAR classification criteria for RA

1987 classification criteria
(parameters)
2010 classification criteria
(parameters and points)
To be used in patients with at least one joint with definite clinical synovitis and with the synovitis not better explained by another disease
Morning stiffnessJoint involvement
1 large joint=0
2–10 large joints=1
1–3 small joints=2
4–10 small joints=3
>10 small joints=5
Arthritis of three or more joint areasSerology
RF and ACPA negative=0
Low positive RF or ACPA=2
High positive RF or ACPA=3
Arthritis of hand jointsAcute phase reactants
Normal=0
Elevated CRP or ESR=1
Symmetric arthritisDuration of symptoms
<6 weeks=0
>6 weeks=1
Rheumatoid nodules
Serum RF
Radiographic changes
Criteria are fulfilled if 4 out of 7 parameters are presentCriteria are fulfilled if a patient has ≥6 points
  • ACPA, anti-citrullinated peptide antibody; ACR, American College of Rheumatology; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; EULAR, European League Against Rheumatism; RA, rheumatoid arthritis; RF, rheumatoid factor.