Figure 1From: Smoking interacts with HLA-DRB1 shared epitope in the development of anti-citrullinated protein antibody-positive rheumatoid arthritis: results from the Malaysian Epidemiological Investigation of Rheumatoid Arthritis (MyEIRA)Odds ratios of developing ACPA-positive and ACPA-negative rheumatoid arthritis (RA) for different combinations of smoking and SE alleles. The odds ratios of developing (a) ACPA-positive RA and (b) ACPA-negative RA were compared with those who never smoked and have no SE alleles.Back to article page