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Table 3 Analysis of the relative weights of the serological criteria and their combinations

From: Improved RA classification among early arthritis patients with the concordant presence of three RA autoantibodies: analysis in two early arthritis clinics

 

2010 ACR/EULARa

Concordance

2010 + Ccd.

2010 + Ccd.’

Stratum

OR (95% CI) b

OR (95% CI)

OR (95% CI)

OR (95% CI)

3

26.1 (18.0–37.8)

7.5 (3.3–17.0)

7.0 (4.0–12.2)

2

2.4 (1.6–3.7)

1.7 (0.8–3.7) c

1.6 (1.0–2.6) c

3Ab

80.9 (37.0–177.1)

11.4 (3.7–35.2)

12.2 (4.9–30.2)

2Ab

15.1 (10.0–22.9)

2.8 (1.2–6.8)

3.0 (1.7–5.3)

1Ab

2.1 (1.4–3.0)

0.9 (0.5–1.8) c

  1. aThe serological criteria from the 2010 ACR/EULAR RA classification criteria, the concordance (Ccd.) of autoantibodies, and their combination without modification (2010 + Ccd.) and after deleting the 1Ab stratum (2010 + Ccd’)
  2. bOR and their 95% confidence intervals
  3. cThis stratum did not contribute significantly to RA classification