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Fig. 1 | Arthritis Research & Therapy

Fig. 1

From: Rheumatoid arthritis–associated autoantibodies in non–rheumatoid arthritis patients with mucosal inflammation: a case–control study

Fig. 1

Serum immunoglobulin G (IgG) (a) and IgA anti-cyclic citrullinated peptide (anti-CCP) (b) levels in healthy controls (HC) and in patients with periodontitis (PD), bronchiectasis (BR), cystic fibrosis (CF) and rheumatoid arthritis (RA). Cutoff values are indicated: diagnostic cutoff (25 U/ml) and >2 SD above the mean of HC for IgG anti-CCP and >2 SD above the mean of HC for IgA anti-CCP. Seropositivity (%) is indicated for cutoff based on >2 SD above the mean of HC. Bar indicates the median. **p < 0.01, ***p < 0.0001, Kruskal–Wallis one-way analysis of variance with Dunn’s multiple-comparisons post-test compared with HC if overall p < 0.05

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