Novel insights regarding the measurement properties of the SCOPA-AUT

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LIBRIS-ID:oai:researchportal.hkr.se/admin:publications/6d48c039-9dab-49b0-be2b-6741ef4ea756
oai:researchportal.hkr.se/admin:publications/6d48c039-9dab-49b0-be2b-6741ef4ea756URI
https://doi.org/10.1186/s12883-022-03008-2DOI
https://lup.lub.lu.se/record/cf21b563-c177-4d1c-9fca-a70ade9a5c1cURI

Publisher Copyright: © 2022, The Author(s).
BACKGROUND: The Scale for Outcomes in Parkinson's disease for Autonomic symptoms (SCOPA-AUT) is an instrument intended to assess overall and domain-specific autonomic symptom burden. In this study the SCOPA-AUT is translated into Swedish and its measurement properties are assessed. METHODS: Following translation the SCOPA-AUT was field-tested regarding comprehensibility, relevance, and respondent burden (n = 20). It was then tested according to Rasch measurement theory using data from 242 persons with PD, of whom 162 completed SCOPA-AUT at baseline and 1-2 years later, giving a total of 404 data points for analysis. RESULTS: The Swedish SCOPA-AUT took a mean of 6 min to complete and was considered easy to use and relevant by respondents. SCOPA-AUT exhibited acceptable Rasch model fit, represents more severe levels of dysautonomia than that reported by the sample, and response categories were not working as expected for 17 items. Local dependency was identified and followed a pattern resembling the suggested subscales. Accounting for the subscale structure eliminated local dependency and reduced the initially inflated reliability from 0.81 to 0.68. CONCLUSIONS : The SCOPA-AUT is useful as a clinical check-list but requires further developmental work in order to meet more rigorous standards as an outcome measurement instrument.

Wictorin, KlasLund University,Lunds universitet,Kliniska Vetenskaper, Helsingborg,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Clinical Sciences, Helsingborg,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Helsingborg Hospital(Swepub:lu)kl6605wi (författare)
Hansson, OskarLund University,Lunds universitet,Klinisk minnesforskning,Forskargrupper vid Lunds universitet,Clinical Memory Research,Lund University Research Groups,Skåne University Hospital(Swepub:lu)mphy-ohn (författare)
Hagell, PeterKristianstad University(Swepub:lu)neur-pha (författare)
Kristianstad UniversityKliniska Vetenskaper, Helsingborg (creator_code:org_t)

Av författaren/redakt...: Westergren, Albe ...; Wictorin, Klas; Hansson, Oskar; Hagell, Peter

Om ämnet

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Neurologi

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