Mean differences with 95% CI between the Internal Family Systems (IFS) intervention group and the education group in study outcomes at baseline and 3, 6, 9, and 21 months. Mean differences with 95% CI between the Internal Family Systems (IFS) intervention group and the education group in study outcomes at baseline and 3, 6, 9, and 21 months. P values reflect mixed model repeated measures analyses. DAS28-CRP4S: Disease Activity Score-28-C-reactive Protein 4; RADAI: Rheumatoid Arthritis Disease Activity Index; SF-12: Short Form-12; STAI: State Trait Anxiety Inventory. Nancy A. Shadick et al. J Rheumatol 2013;40:1831-1841 ©2013 by The Journal of Rheumatology