Figure 1From: Meta-analysis identified the TNFA -308G > A promoter polymorphism as a risk factor for disease severity in patients with rheumatoid arthritisDevelopment of corrected joint scores over time showing the GG and GA+AA genotypes, separately. Data points were calculated using the mixed model (least-square means and standard errors), including correction for age and 28-joint disease activity score (DAS28).Back to article page