Mean SF-36 (a) physical (PCS) and (b) mental (MCS) component summary score by treatment group and visit (*P < 0.05; †P < 0.01; ‡P < 0.001). Treatment groups are 'Abatacept' = abatacept + MTX and 'Placebo' = placebo + MTX. Reproduced from Ann Rheum Dis 2007, 66: 189–194  with permission from the BMJ Publishing Group.
Buch et al. Arthritis Research & Therapy 2008 10(Suppl 1):S5 doi:10.1186/ar2416