{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,9]],"date-time":"2026-05-09T06:31:10Z","timestamp":1778308270089,"version":"3.51.4"},"reference-count":0,"publisher":"AVES YAYINCILIK A.\u015e.","issue":"3","license":[{"start":{"date-parts":[[2017,9,30]],"date-time":"2017-09-30T00:00:00Z","timestamp":1506729600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Archives of Rheumatology"],"abstract":"<jats:p>Objectives: This study aims to assess whether vitamin D deficiency is associated with increased disease activity and functional impairment in axial spondyloarthritis (axSpA), with control for its seasonal variation.\r\nPatients and methods: Serum 25-hydroxyvitamin D [25(OH)D] levels were measured in 235 consecutive axSpA patients (176 males, 59 females; mean age 46.3 years; range 18 to 85 years) attending a specialist spondyloarthritis service in the United Kingdom. Disease activity and functional status were assessed using Bath Ankylosing Spondylitis indices, C-reactive protein, and erythrocyte sedimentation rates. Vitamin D deficiency was defined as 25(OH)D<\/jats:p>","DOI":"10.5606\/archrheumatol.2017.6212","type":"journal-article","created":{"date-parts":[[2018,1,14]],"date-time":"2018-01-14T16:15:33Z","timestamp":1515946533000},"page":"209-215","source":"Crossref","is-referenced-by-count":17,"title":["Vitamin D Deficiency in Axial Spondyloarthritis is Associated With Higher Disease Activity"],"prefix":"10.5152","volume":"32","author":[{"family":"Sizheng ZHAO","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"family":"Daniel THONG","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"family":"Stephen DUFFIELD","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"family":"Nicola GOODSON","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"3111","published-online":{"date-parts":[[2017,9,30]]},"container-title":["Archives of Rheumatology"],"original-title":[],"link":[{"URL":"https:\/\/archivesofrheumatology.org\/index.php\/pub\/article\/download\/873\/1440","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/archivesofrheumatology.org\/index.php\/pub\/article\/download\/873\/1441","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/archivesofrheumatology.org\/index.php\/pub\/article\/download\/873\/1440","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T10:38:46Z","timestamp":1761215926000},"score":1,"resource":{"primary":{"URL":"https:\/\/archivesofrheumatology.org\/index.php\/pub\/article\/view\/873"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,9,30]]},"references-count":0,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2017,9,30]]}},"URL":"https:\/\/doi.org\/10.5606\/archrheumatol.2017.6212","relation":{},"ISSN":["2618-6500"],"issn-type":[{"value":"2618-6500","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,9,30]]}}}