TNF and rheumatoid arthritis: After multivariate logistic regression analysis using NAb positivity as the dependent variable and as independent variables, those with p < 0.2 in univariate analysis (RA, SLE, sulfasalazine, anti-TNF, ABA, TCZ, and RTX use), only ABA use (OR = 0.48; 95% CI 0.24–0.97, p = 0.041) remained significantly associated with the absence of NAb at D210 in ARD patients (Table 4).