TNF and rheumatoid arthritis: aP = 0.001 compared to RA on MTX; P = 0.033 compared to RA on anti-TNF as monotherapy; P = 0.002 compared to RA on anti-TNF + MTX; P = 0.011 compared to RA on abatacept; P < 0.001 compared to RA on rituximab; P = 0.006 compared to SpA on anti-TNF + MTX; bP = 0.05 compared to RA on rituximab; cP = 0.013 compared to RA on rituximab; P = 0.033 compared to SpA on dP = 0.046 compared to RA on rituximab (Chi2 test/Fisher’s exact test).