{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T15:51:43Z","timestamp":1747151503141,"version":"3.40.5"},"reference-count":58,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2022,8,27]],"date-time":"2022-08-27T00:00:00Z","timestamp":1661558400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006738","name":"Medicinska Fakulteten, Lunds Universitet","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100006738","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["PM&amp;R"],"published-print":{"date-parts":[[2023,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Fear of falling (FoF) is very common in persons with late effects of polio (LEoP). An internationally recognized rating scale to assess FoF is the Falls Efficacy Scale\u2010International (FES\u2010I). Yet, there is limited knowledge about its measurement properties in persons with LEoP.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>To investigate the measurement properties of the FES\u2010I (16\u2010item version) and the short FES\u2010I (7\u2010item version) in persons with LEoP.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Explorative factor analysis and Rasch model analysis of cross\u2010sectional data.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>University hospital.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>A total of 321 persons with LEoP (mean age \u00b1 standard deviation [SD] 70\u2009\u00b1\u200910\u2009years, 173 women).<\/jats:p><\/jats:sec><jats:sec><jats:title>Main Outcome Measurement<\/jats:title><jats:p>The FES\u2010I and the short FES\u2010I, comprising four response options about concerns of falling ranging from 1 (not at all concerned) to 4 (very concerned).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Data were collected by a postal survey. First, a factor analysis was performed to investigate the unidimensionality of the scale. Thereafter, a Rasch model analysis was used to further analyze the measurement properties of the FES\u2010I and the short FES\u2010I, such as local dependency, targeting, hierarchical order of items, Differential Item Functioning (DIF), response category functioning and reliability (Person Separation Index, PSI). Raw score transformation to interval measurements was also performed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The factor analysis revealed that the FES\u2010I was unidimensional, even though the Rasch analysis showed some misfit to the Rasch model and local dependency. Targeting for the FES\u2010I and the short FES\u2010I was somewhat suboptimal as the participants on average reported less FoF than expected. A negligible gender DIF was found for two items in the FES\u2010I and for one item in the short FES\u2010I. Reliability was high (PSI &gt;0.86), and the response category thresholds worked as intended for both the FES\u2010I and the short FES\u2010I.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The FES\u2010I and the short FES\u2010I have sufficient measurement properties in persons with LEoP. Both versions can be used to assess fear of falling (or FoF) in this population.<\/jats:p><\/jats:sec>","DOI":"10.1002\/pmrj.12861","type":"journal-article","created":{"date-parts":[[2022,6,6]],"date-time":"2022-06-06T08:03:11Z","timestamp":1654502591000},"page":"751-760","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Measurement properties of the Falls Efficacy Scale\u2010International (FES\u2010I) in persons with late effects of polio: A cross\u2010sectional study"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9249-9421","authenticated-orcid":false,"given":"Christina","family":"Brog\u00e5rdh","sequence":"first","affiliation":[{"name":"Department of Health Sciences Lund University  Lund Sweden"},{"name":"Department of Neurology, Rehabilitation Medicine, Memory Disorders and Geriatrics Sk\u00e5ne University Hospital  Lund 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