{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:30:22Z","timestamp":1747182622006,"version":"3.40.5"},"reference-count":43,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2019,6,27]],"date-time":"2019-06-27T00:00:00Z","timestamp":1561593600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Int J of Rheum Dis"],"published-print":{"date-parts":[[2019,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To assess the validity and reliability of the Assessment of Spondyloarthritis International Society Health Index (ASAS HI) among patients with axial spondyloarthritis (axSpA) in Singapore.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We collected data from English\u2010speaking patients with axSpA seen at a dedicated axSpA clinic in a Singapore tertiary referral hospital from 2017 to 2018. Face validity of the English version of ASAS HI was assessed through cognitive debriefing interviews (CDIs). Structural validity was assessed with confirmatory factor analysis. Convergent construct validity was assessed with 12 a priori hypotheses about the magnitude and direction of correlations between the ASAS HI summary score and other patient\u2010reported outcome measures. Internal consistency was assessed using Cronbach's alpha. Test\u2010retest reliability was assessed by intraclass correlation coefficient (ICC). Measurement error was assessed by analyzing smallest detectable change (SDC).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Ten patients (age range 22\u201046\u00a0years, 50% male) participated in CDIs and face validity was supported. Among 108 patients (median age: 37 [21\u201077], 80.6% males), unidimensionality was confirmed (comparative fit index\u00a0=\u00a00.960, Tucker\u2010Lewis Index\u00a0=\u00a00.952, root mean square error of approximation\u00a0=\u00a00.038, standardized root mean residuals\u00a0=\u00a00.068, model Chi\u2010square test <jats:italic>P<\/jats:italic>\u00a0=\u00a00.1251) in the 17\u2010item ASAS HI. The ASAS HI showed good internal consistency of 0.83 and excellent test\u2010retest reliability (ICC\u00a0=\u00a00.95; 95% CI 0.91\u20100.98) when baseline was compared with week 2. SDC was 1.02. Convergent validity was supported as hypotheses were confirmed in 100% of the results.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study supports the ASAS HI as a valid and reliable measure of health status for use in patients with axSpA in Singapore.<\/jats:p><\/jats:sec>","DOI":"10.1111\/1756-185x.13640","type":"journal-article","created":{"date-parts":[[2019,6,27]],"date-time":"2019-06-27T11:35:05Z","timestamp":1561635305000},"page":"1644-1651","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Validity and reliability of the Assessment of Spondyloarthritis International Society Health Index in English\u2010speaking patients with axial spondyloarthritis in Singapore"],"prefix":"10.1111","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7802-9696","authenticated-orcid":false,"given":"Yu Heng","family":"Kwan","sequence":"first","affiliation":[{"name":"Program in 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