{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,7]],"date-time":"2026-11-07T00:11:57Z","timestamp":1794010317989,"version":"4.8.0"},"reference-count":33,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2014,1,23]],"date-time":"2014-01-23T00:00:00Z","timestamp":1390435200000},"content-version":"vor","delay-in-days":22,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100009727","name":"The Hospital Research Foundation","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100009727","id-type":"DOI","asserted-by":"crossref"}]},{"name":"The Health Observatory and a University of Adelaide Scholarship"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Internal Medicine Journal"],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background\/Aim<\/jats:title><jats:p>To determine the epidemiology and clinical features of biopsy\u2010proven giant cell arteritis (<jats:styled-content style=\"fixed-case\">GCA<\/jats:styled-content>) in South <jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>ustralia (<jats:styled-content style=\"fixed-case\">SA<\/jats:styled-content>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients with biopsy\u2010proven <jats:styled-content style=\"fixed-case\">GCA<\/jats:styled-content> were identified from pathology reports of temporal artery biopsies at <jats:styled-content style=\"fixed-case\">SA P<\/jats:styled-content>athology laboratories, from 1 <jats:styled-content style=\"fixed-case\">J<\/jats:styled-content>anuary 1992, to 31 <jats:styled-content style=\"fixed-case\">J<\/jats:styled-content>uly 2011. Epidemiological data were collected through patient questionnaires and standardised case note reviews. Incidence was estimated using <jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>ustralian <jats:styled-content style=\"fixed-case\">B<\/jats:styled-content>ureau of <jats:styled-content style=\"fixed-case\">S<\/jats:styled-content>tatistics population data for <jats:styled-content style=\"fixed-case\">SA<\/jats:styled-content>. Seasonality was analysed by Cosinor analysis, and time\u2010to\u2010 event analysis was performed for the duration of steroid use.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>There were 314 cases of biopsy\u2010proven <jats:styled-content style=\"fixed-case\">GCA<\/jats:styled-content> (72% female). The mean age at diagnosis of <jats:styled-content style=\"fixed-case\">GCA<\/jats:styled-content> was 78 years (interquartile range 72\u201382). The estimated population incidence for people over 50 was 3.2 per 100\u2009000 person years. The female\u2009:\u2009male incidence ratio was 2.3 (<jats:italic>P<\/jats:italic> &lt; 0.001), and incidence increased with each age decade. There was evidence of seasonal variation (<jats:italic>P<\/jats:italic> = 0.015), with higher rates observed in the summer months.<\/jats:p><jats:p>Clinical data were available for 163 patients (68% female, median age 78 years). The most common presenting clinical features were temporal headache (74%), visual disturbance (68.4%), jaw claudication (59.3%) and symptoms of polymyalgia rheumatica (56%). The median initial steroid dose was 60\u2009mg, with median duration of steroid use 4.5 years. Corticosteroid side\u2010effects were common, affecting 89%, with 34% reporting five or more.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This is the first epidemiological study of Australian biopsy\u2010proven <jats:styled-content style=\"fixed-case\">GCA<\/jats:styled-content> patients. Age at onset and gender associations were similar to other <jats:styled-content style=\"fixed-case\">W<\/jats:styled-content>estern populations. There was a high burden of steroid use in these patients.<\/jats:p><\/jats:sec>","DOI":"10.1111\/imj.12293","type":"journal-article","created":{"date-parts":[[2013,10,12]],"date-time":"2013-10-12T02:04:54Z","timestamp":1381543494000},"page":"32-39","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":67,"title":["Epidemiology of biopsy\u2010proven giant cell arteritis in <scp>S<\/scp>outh <scp>A<\/scp>ustralia"],"prefix":"10.1111","volume":"44","author":[{"given":"E.","family":"Dunstan","sequence":"first","affiliation":[{"name":"Rheumatology Unit The Queen Elizabeth Hospital  Adelaide South Australia Australia"},{"name":"Discipline of Medicine The University of Adelaide  Adelaide South Australia Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. 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