Table 3 Comparison of logistic regression models for RA classification based on the serological 2010 criteria, the antibody concordance, and their combination.

From: Improved classification of rheumatoid arthritis with a score including anti-acetylated ornithine antibodies

Stratum

2010 ACR/EULARa

Ccdc. anti-AcOrn

2010 + Ccdc. anti-AcOrn

OR (95% CI)b

OR (95% CI)

OR (95% CI)

3

25.9 (17.9–37.6)

–

4.4 (1.9–10.4)

2

2.5 (1.6–3.8)

–

1.2 (0.5–2.6)c

3Ab

–

48.7 (25.5–93.0)

11.4 (4.0–32.9)

2Ab

–

28.5 (17.1–47.4)

7.9 (3.0–20.4)

1Ab

–

2.7 (1.9–3.9)

1.6 (0.8–3.2)c

  1. aThe serological component of the 2010 ACR/EULAR RA classification criteria, the concordance (Ccdc.) of RF, anti-CCP and anti-AcOrn autoantibodies, and their combination (2010 + Ccdc.)
  2. bOR and their 95% confidence intervals.
  3. cThis stratum did not contribute significantly to RA classification.
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