Figure 2.
ACPA score among anti-CCP2 positive RA cases categorized as never, former, or current smokers; ACPA scores shown for patients with periodontitis (top panel) and without periodontitis (bottom panel). Among RA cases without periodontitis, ACPA scores significantly higher in current smokers compared to both never smokers (p = 0.043) with a non-significant trend (p = 0.083) in comparisons of current vs. former smokers. There were no differences in ACPA score based on smoking status among those with periodontitis (p = NS).