Figure 1.

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.

Too et al. Arthritis Research & Therapy 2012 14:R89   doi:10.1186/ar3813
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