. Author manuscript; available in PMC: 2010 Oct 27.

Published in final edited form as: Ann Rheum Dis. 2008 Jan 30;67(11):1557–1561. doi: 10.1136/ard.2007.082339

Table 1.

Criteria sets investigated for classification of RA

	1987 ACR Criteria	1987 ACR Criteria + anti-CCP	CCP 7 Criteria	CCP 6 Criteria
1. morning stiffness > 1 hr^*	✓	✓	✓	✓
2. arthritis ≥ 3 joints^*	✓	✓	✓	✓
3. hand arthritis^*	✓	✓	✓	✓
4. symmetric arthritis^*	✓	✓	✓	✓
5. rheumatoid nodules	✓	✓
6. RF +	✓	✓	✓	✓
7. radiographic changes	✓	✓	✓
8. anti-CCP +		✓	✓	✓
# criteria required	≥4 out of 7	≥4 out of 8	≥3 out of 7	≥3 out of 6

Arthritis symptoms ≥ 6 weeks