John D. Reveille|James Witter|Michael H. Weisman
Prevalence of axial spondylarthritis in the United States: Estimates from a cross?sectional survey
The University of Texas Health Science Center at Houston
us national prevalence spondylarthritis spa estimated 2 published sets classification criteria amor criteria european spondylarthropathy study group essg criteria 2 spa criteria sets widely utilized previous populationbased studies spathe us spa prevalence estimates based representative sample 5013 us adults ages 2069 years examined us national health nutrition examination survey nhanes 20092010the overall ageadjusted prevalence definite probable spa amor criteria 09 95 confidence interval 95 ci 0711 corresponding estimated 17 million persons 95 ci 1421 million persons ageadjusted prevalence spa essg criteria 14 95 ci 1019 corresponding estimated 27 million persons 95 ci 1937 million persons statistically significant sex differences spa prevalence spa prevalence among nonhispanic white persons 10 95 ci 0715 amor criteria 15 95 ci 1023 essg criteria spa prevalence could reliably estimated raceethnicity subgroups due sample size imitationsthe spa prevalence estimates range spa prevalence estimates reported elsewhere populationbased surveys likely spa may affect 1 us adults prevalence similar reported rheumatoid arthritis current us spa prevalence estimates may lower true value nhanes 20092010 data collection capture complete set elements specified 2 spa criteria sets