{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,4]],"date-time":"2026-07-04T00:03:29Z","timestamp":1783123409311,"version":"3.54.6"},"reference-count":47,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2025,7,29]],"date-time":"2025-07-29T00:00:00Z","timestamp":1753747200000},"content-version":"vor","delay-in-days":209,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Northern Norway Regional Health"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,6,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Objectives<\/jats:title>\n                  <jats:p>To compare Sami and non-Sami patients with PsA in northern Norway, where both the human antigen HLA-B27 and psoriasis are prevalent, particularly among the Sami population.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>A total of 536 adult PsA patients were recruited from the Norwegian Arthritis Registry and hospitals in northern Norway. All participants met the Classification Criteria for Psoriatic Arthritis. A questionnaire from the SAMINOR (a study in regions with Sami and Norwegian populations) was used to identify Sami and non-Sami patients. Demographic, clinical and laboratory parameters were compared between these groups. Binary logistic regression was used to adjust for age and gender differences.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>The 60 Sami and 476 non-Sami patients identified were comparable in demographic characteristics and disease activity measurements. Sami patients experienced a longer duration of symptoms before diagnosis compared with non-Sami patients (4\u2009years vs 2\u2009years, P\u2009=\u20090.045), with a more pronounced delay among Sami men (5\u2009years vs 1\u2009year, P\u2009=\u20090.003). Sami men also had higher scores for back and\/or pelvis pain (42\u2009mm vs 31\u2009mm, P\u2009=\u20090.034). Axial involvement was more frequent among Sami than non-Sami patients (30% vs 18%, P\u2009=\u20090.029), even after adjusting for gender and age (odds ratio 1.91, P\u2009=\u20090.041). Among patients with axial involvement, HLA-B27 was positive in 47.1% of Sami patients compared with 37% of non-Sami patients (P\u2009=\u20090.461).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Sami patients face longer symptom durations before diagnosis and more frequent axial involvement than non-Sami patients. Sami men also report higher back\/pelvic pain levels, though no differences between the cohorts in demographics or disease activity were observed.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/rap\/rkaf092","type":"journal-article","created":{"date-parts":[[2025,7,29]],"date-time":"2025-07-29T16:35:10Z","timestamp":1753806910000},"source":"Crossref","is-referenced-by-count":1,"title":["Sami patients in northern Norway experience longer symptoms duration before psoriatic arthritis diagnosis and have more axial involvement"],"prefix":"10.1093","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-4927-6767","authenticated-orcid":false,"given":"Marija I","family":"Rosic","sequence":"first","affiliation":[{"name":"Department of Rheumatology, University Hospital of North Norway , Troms\u00f8,","place":["Norway"]},{"name":"Faculty of Health Sciences, UIT\u2014The Arctic University of Norway , Troms\u00f8,","place":["Norway"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9279-5191","authenticated-orcid":false,"given":"Glenn","family":"Haugeberg","sequence":"additional","affiliation":[{"name":"S\u00f8rlandet Hospital, Kristiansand, and Norwegian University of Science and Technology , Trondheim,","place":["Norway"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4251-6278","authenticated-orcid":false,"given":"Gro \u00d8","family":"Eilertsen","sequence":"additional","affiliation":[{"name":"Department of Rheumatology, University Hospital of North Norway , Troms\u00f8,","place":["Norway"]},{"name":"Faculty of Health Sciences, UIT\u2014The Arctic University of Norway , Troms\u00f8,","place":["Norway"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2025,7,29]]},"reference":[{"key":"2025082418361207900_rkaf092-B1","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/0049-0172(73)90035-8","article-title":"Psoriatic arthritis","volume":"3","author":"Moll","year":"1973","journal-title":"Semin Arthritis Rheum"},{"key":"2025082418361207900_rkaf092-B2","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1007\/978-3-319-19530-8_17","volume-title":"Psoriatic arthritis and psoriasis: pathology and clinical aspects","author":"Koehm","year":"2016"},{"key":"2025082418361207900_rkaf092-B3","first-page":"719","article-title":"Possible involvement of group A streptococci in the pathogenesis of psoriatic arthritis","volume":"9","author":"Vasey","year":"1982","journal-title":"J Rheumatol"},{"key":"2025082418361207900_rkaf092-B4","doi-asserted-by":"crossref","first-page":"101495","DOI":"10.1016\/j.berh.2020.101495","article-title":"The microbiome in spondyloarthritis","volume":"33","author":"Breban","year":"2019","journal-title":"Best Pract Res Clin Rheumatol"},{"key":"2025082418361207900_rkaf092-B5","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1136\/ard.2011.155044","article-title":"Human leucocyte antigen risk alleles for psoriatic arthritis among patients with psoriasis","volume":"71","author":"Eder","year":"2012","journal-title":"Ann Rheum Dis"},{"key":"2025082418361207900_rkaf092-B6","doi-asserted-by":"crossref","first-page":"101692","DOI":"10.1016\/j.berh.2021.101692","article-title":"The epidemiology of psoriatic arthritis: a literature review","volume":"35","author":"Karmacharya","year":"2021","journal-title":"Best Pract Res Clin Rheumatol"},{"key":"2025082418361207900_rkaf092-B7","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1136\/annrheumdis-2013-203862","article-title":"Prevalence and incidence rates of psoriatic arthritis in central Norway: data from the Nord-Tr\u00f8ndelag health study (HUNT)","volume":"74","author":"Hoff","year":"2015","journal-title":"Ann Rheum Dis"},{"key":"2025082418361207900_rkaf092-B8","first-page":"1918","article-title":"Prevalence, disease manifestations, and treatment of psoriatic arthritis in Western Norway","volume":"32","author":"Madland","year":"2005","journal-title":"J Rheumatol"},{"key":"2025082418361207900_rkaf092-B9","doi-asserted-by":"crossref","first-page":"6","DOI":"10.2340\/0001555518269","article-title":"Prevalence of psoriasis in a Norwegian Lapp population","volume":"73","author":"Falk","year":"1993","journal-title":"Acta Derm Venereol"},{"key":"2025082418361207900_rkaf092-B10","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1016\/j.jaad.2018.06.027","article-title":"Prevalence of psoriatic arthritis in patients with psoriasis: a systematic review and meta-analysis of observational and clinical studies","volume":"80","author":"Alinaghi","year":"2019","journal-title":"J Am Acad Dermatol"},{"key":"2025082418361207900_rkaf092-B11","doi-asserted-by":"crossref","first-page":"1303","DOI":"10.1111\/bjd.12230","article-title":"Is the prevalence of psoriasis increasing? 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