(A) Mean (95% CI) change and (B) mean percentage (SE) change in enthesitis scores (Leeds Enthesitis Index, SPARCC Enthesitis Index, and MASES) from baseline to Week 12 among patients with a baseline enthesitis score ≥ 1 by treatment (observed data). (A) Mean (95% CI) change and (B) mean percentage (SE) change in enthesitis scores (Leeds Enthesitis Index, SPARCC Enthesitis Index, and MASES) from baseline to Week 12 among patients with a baseline enthesitis score ≥ 1 by treatment (observed data). SE: standard error; MASES: Maastricht Ankylosing Spondylitis Enthesitis Score; SPARCC: Spondyloarthritis Research Consortium of Canada. Philip J. Mease et al. J Rheumatol 2017;44:599-608 ©2017 by The Journal of Rheumatology