{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T08:22:27Z","timestamp":1777623747052,"version":"3.51.4"},"reference-count":20,"publisher":"The Journal of Rheumatology","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Rheumatol"],"published-print":{"date-parts":[[2020,6,1]]},"abstract":"<jats:sec><jats:title>Objective.<\/jats:title><jats:p>To examine racial differences of clinical features, medication usage, and comorbidities of patients with ankylosing spondylitis (AS) in the United States.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods.<\/jats:title><jats:p>In the Explorys database, 28,520 patients with AS were identified. Data were stratified by 2 rheumatology visits, race, sex, clinical characteristics, medication use, and comorbidities. Datasets were recorded as proportions, which were compared using chi-square test (p &lt; 0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results.<\/jats:title><jats:p>Of the 10,990 patients with AS, 8% were African Americans and had elevated erythrocyte sedimentation rate and C-reactive protein, and high frequency of anterior uveitis, hypertension, diabetes, depression, and heart disease.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion.<\/jats:title><jats:p>African Americans with AS in the United States have high disease activity and comorbidities compared to whites.<\/jats:p><\/jats:sec>","DOI":"10.3899\/jrheum.181019","type":"journal-article","created":{"date-parts":[[2019,9,1]],"date-time":"2019-09-01T16:15:17Z","timestamp":1567354517000},"page":"835-838","source":"Crossref","is-referenced-by-count":29,"title":["Racial Differences in Clinical Features and Comorbidities in Ankylosing Spondylitis in the United States"],"prefix":"10.3899","volume":"47","author":[{"given":"Dilpreet Kaur","family":"Singh","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marina N.","family":"Magrey","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2262","published-online":{"date-parts":[[2019,9,1]]},"reference":[{"key":"2020060113043397000_47.6.835.1","doi-asserted-by":"crossref","first-page":"2359","DOI":"10.1007\/s10067-017-3767-6","article-title":"Ethnicity and disease severity in ankylosing spondylitis a cross-sectional analysis of three ethnic groups","volume":"36","author":"Jamalyaria","year":"2017","journal-title":"Clin Rheumatol"},{"key":"2020060113043397000_47.6.835.2","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1016\/S0140-6736(76)91504-X","article-title":"Low incidence of HLA-B27 in American Blacks with spondyloarthropathies","volume":"1","author":"Khan","year":"1976","journal-title":"Lancet"},{"key":"2020060113043397000_47.6.835.3","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1002\/art.1780200401","article-title":"Comparison of clinical features in HLA-B27 positive and negative patients with AS","volume":"20","author":"Khan","year":"1997","journal-title":"Arthritis Rheum"},{"key":"2020060113043397000_47.6.835.4","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1002\/art.1780140103","article-title":"The rarity of ankylosing spondylitis in the black race","volume":"14","author":"Baum","year":"1971","journal-title":"Arthritis Rheum"},{"key":"2020060113043397000_47.6.835.5","doi-asserted-by":"publisher","DOI":"10.1097\/00002281-200007000-00008"},{"key":"2020060113043397000_47.6.835.6","doi-asserted-by":"publisher","DOI":"10.1002\/acr.21621"},{"key":"2020060113043397000_47.6.835.7","unstructured":"SNOMED International . 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