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. 2022 Oct 21;8(2):e002465. doi: 10.1136/rmdopen-2022-002465

Figure 1.

Figure 1

Kaplan-Meier analysis for the risk of lung cancer in patients with RA versus population referents from the EIRA study: (A) for the whole group of patients; (B) for ever smokers patients with RA versus never smoker controls; (C) for patients with RA who are ACPA positive versus ACPA negative and (D) for patients with RA who were ever smokers (current and past) and were both RF and ACPA positive. ACPA, anticitrullinated peptide antibody; EIRA, Epidemiological Investigation of RA; RA, rheumatoid arthritis; RF, rheumatoid factor.