Higher rates of nonradiographic axSpA among Black patients
The rate of nonradiographic axSpA among Black Americans was more than twice that of their White counterparts, which, Dr. Alexander noted, could make it more difficult to diagnose axSpA in that population.
The odds ratio for Black patients having nonradiographic axSpA, compared with Whites, was 2.265 (95% CI, 1.082-4.999; P = .035), after adjustment for age, sex, and HLA-B27 status.
Adult patients with axSpA were identified from rheumatology clinics at four major hospital systems and one private clinic in Shelby County, Tenn., between 2011 and 2021. Patients met modified New York (mNY) or Assessment of Spondyloarthritis International Society (ASAS) criteria as assessed by reviewers.
The authors and Dr. Alexander reported no relevant financial relationships.