Figure 4From: A meta-analysis of the incidence of malignancy in adult patients with rheumatoid arthritisRelative risk of lung cancer in patients with rheumatoid arthritis (RA) compared with the general population. CI, confidence interval; DMARDs, disease-modifying antirheumatic drugs; MTX, methotrexate; n, number of malignancies; N, population size; SIR, standardized incidence ratio; TNF, tumor necrosis factor.Back to article page