{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T07:55:43Z","timestamp":1790582143683,"version":"4.1.0"},"reference-count":18,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T00:00:00Z","timestamp":1790553600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/100000069","name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases","doi-asserted-by":"publisher","award":["K23AR08306"],"award-info":[{"award-number":["K23AR08306"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000069","name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases","doi-asserted-by":"publisher","award":["P01\u2010052915"],"award-info":[{"award-number":["P01\u2010052915"]}],"id":[{"id":"10.13039\/100000069","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["acrjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthritis Care &amp; Research"],"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>The goal of this study was to determine if patient global assessment (PGA) scores reported by patients with axial spondyloarthritis (AxSpA) before the development of the AxSpA Disease Activity Score (ASDAS) can be used as a substitute for the global item of the ASDAS formula.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Data from the Prospective Study of Outcomes in Ankylosing Spondylitis (PSOAS) observational cohort were analyzed. Patients completed a questionnaire during visits to assess disease activity. Before the development of ASDAS, global disease activity was rated on a numeric scale with the prompt, \u201cConsidering all the ways that your ankylosing spondylitis affects you, rate how you are doing.\u201d The ASDAS global prompt instead asks, \u201cHow active was your spondylitis on average during the last week?\u201d We calculated the ASDAS based on the original PGA of the PSOAS cohort (PSOAS\u2010PGA) and the standard ASDAS\u2010PGA. Then, we compared ASDAS disease activity categories between the two values and calculated weighted Cohen's \u03ba coefficients. We also compared the older versus newer global single\u2010item scores with intraclass correlation coefficients (ICCs).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 610 unique patient visits were analyzed. The proportion of agreement of ASDAS calculated with the PSOAS\u2010PGA compared to the ASDAS\u2010PGA was 86.7% based on disease activity categories with Cohen's \u03ba coefficient of 0.818. The ICC was calculated using a two\u2010way mixed\u2010effects model and was 0.980, consistent with excellent agreement.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Prior measures of PGA used before the validation of ASDAS are a valid substitution for the PGA in the ASDAS based on calculation of a \u03ba coefficient showing excellent agreement.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/acr.80163","type":"journal-article","created":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T11:07:51Z","timestamp":1789384071000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Examining the Interchangeability of Two Different Patient\u2010Reported Global Assessment Measures in an Observational Axial Spondyloarthritis Cohort"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-4982-3590","authenticated-orcid":false,"given":"Connor","family":"Vershel","sequence":"first","affiliation":[{"name":"McGovern Medical School, The University of Texas Health Science Center  Houston Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seokhun","family":"Kim","sequence":"additional","affiliation":[{"name":"McGovern Medical School, The University of Texas Health Science Center  Houston Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6314-5336","authenticated-orcid":false,"given":"Lianne S.","family":"Gensler","sequence":"additional","affiliation":[{"name":"University of California San Francisco  San Francisco California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew A.","family":"Brown","sequence":"additional","affiliation":[{"name":"Department of Medical and Molecular Genetics, Faculty of Life Sciences and Medicine King's College London  London United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael H.","family":"Weisman","sequence":"additional","affiliation":[{"name":"Cedars Sinai Medical Center  Los Angeles California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariko L.","family":"Ishimori","sequence":"additional","affiliation":[{"name":"Cedars Sinai Medical Center  Los Angeles California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1857-9367","authenticated-orcid":false,"given":"Michael","family":"Ward","sequence":"additional","affiliation":[{"name":"National Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH  Bethesda Maryland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5950-0913","authenticated-orcid":false,"given":"John D.","family":"Reveille","sequence":"additional","affiliation":[{"name":"McGovern Medical School, The University of Texas Health Science Center  Houston Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2160-1481","authenticated-orcid":false,"given":"Mark C.","family":"Hwang","sequence":"additional","affiliation":[{"name":"McGovern Medical School, The University of Texas Health Science Center  Houston Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,28]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2008.094870"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2008.100826"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1136\/annrheumdis-2016-210770"},{"issue":"12","key":"e_1_2_7_5_1","first-page":"2286","article-title":"A new approach to defining disease status in ankylosing spondylitis: the Bath Ankylosing Spondylitis Disease Activity 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