{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T05:38:20Z","timestamp":1790055500558,"version":"4.0.1"},"reference-count":32,"publisher":"Walter de Gruyter GmbH","issue":"1","license":[{"start":{"date-parts":[[2021,10,26]],"date-time":"2021-10-26T00:00:00Z","timestamp":1635206400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/100009471","name":"DAM Foundation","doi-asserted-by":"crossref","award":["2018\/57956\/3\/EPA"],"award-info":[{"award-number":["2018\/57956\/3\/EPA"]}],"id":[{"id":"10.13039\/100009471","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,1,27]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec id=\"j_sjpain-2021-0087_s_001\">\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>The Fibromyalgia Survey Diagnostic Criteria-2016 (FSD-2016 criteria) were recently recommended for both clinical and research purposes. The present study aims to examine whether there is concordance between clinician-based and FSD-2016 criteria-based diagnoses of FM, and secondly, to examine how the illness severity and physical function relate to the criteria-based diagnosis among patients referred to a rheumatism hospital.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"j_sjpain-2021-0087_s_002\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Participants with a clinician-based diagnosis of FM were included consecutively when referred to a patient education programme for patients with FM. Illness severity was assessed with the Fibromyalgia Survey Questionnaire (FSQ). Based on the FSQ, the fulfilment of the FSD-2016 criteria was evaluated. Physical function was assessed using the Fibromyalgia Impact Questionnaire (FIQ) function scale and self-reported employment status.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"j_sjpain-2021-0087_s_003\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The sample included 130 patients (84% women) from 20 to 66 years of age. Eighty-nine per cent met the FSD-2016 criteria, and 44% of the patients were fully or partially employed. Great variability in illness severity was seen irrespective of employment status. There was an association between illness severity and physical function (r=0.4, p&lt;0.001). For 95% of the patients, the FSQ illness severity scores classify as severe or very severe, and even for those not fulfilling the diagnostic criteria the scores were moderate and severe.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"j_sjpain-2021-0087_s_004\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>There was relatively high agreement between clinician- and criteria-based diagnoses. The illness severity overlapped irrespective of different employment status and fulfilment of FSD-2016 criteria.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1515\/sjpain-2021-0087","type":"journal-article","created":{"date-parts":[[2021,10,26]],"date-time":"2021-10-26T17:24:29Z","timestamp":1635269069000},"page":"59-66","source":"Crossref","is-referenced-by-count":2,"title":["Concordance between clinician- and 2016 criteria-based diagnoses of fibromyalgia"],"prefix":"10.1515","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1800-4440","authenticated-orcid":false,"given":"Anne Marit","family":"Mengshoel","sequence":"first","affiliation":[{"name":"Department of Interdisciplinary Health Sciences , Institute of Health and Society, Medical Faculty, University of Oslo , Oslo , Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nina Linnea","family":"Brandsar","sequence":"additional","affiliation":[{"name":"Hospital of Rheumatic Diseases , Lillehammer , Norway"},{"name":"Skogli Centre for Health and Rehabilitation , Lillehammer , Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8931-9496","authenticated-orcid":false,"given":"B\u00e5rd","family":"Natvig","sequence":"additional","affiliation":[{"name":"Department of General Practice , Institute of Health and Society, Medical Faculty, University of Oslo , Oslo , Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0980-8247","authenticated-orcid":false,"given":"Egil A.","family":"Fors","sequence":"additional","affiliation":[{"name":"Department of Public Health and Nursing , General Practice Research Unit, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU) , Trondheim , Norway"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"374","published-online":{"date-parts":[[2021,10,26]]},"reference":[{"key":"2025120910033491228_j_sjpain-2021-0087_ref_001","doi-asserted-by":"crossref","unstructured":"Sim, J, Madden, S. 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