Durability of response to intra-articular corticosteroid injections with triamcinolone hexacetonide in juvenile idiopathic arthritis

Methods A retrospective chart review was conducted of all JIA patients who received IACI from 6/05 to 3/10, and had at least six months of follow-up. Data collected included demographic information, JIA subtype, date of injection and arthritis flare, type of joint injected and concomitant medications. Any joint that did not flare by the study end date in 9/10 was censored. Time to flare of arthritis was calculated based on the Kaplan-Meier product limit estimator. Two-sided log-rank test was conducted to compare the time to flare within each characteristic group: joints, diagnosis, medications. All analysis in this study was performed using SAS 9.2 (SAS Institute Inc, Cary, NC).