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Functional Index-3:...
Functional Index-3: A Valid and Reliable Functional Outcome Assessment Measure in Patients With Dermatomyositis and Polymyositis
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Ernste, FC (författare)
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Chong, C (författare)
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Crowson, CS (författare)
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Kermani, TA (författare)
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Mhuircheartaigh, ON (författare)
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- Alexanderson, H (författare)
- Karolinska Institutet
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(creator_code:org_t)
- 2020-04-15
- 2021
- Engelska.
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Ingår i: The Journal of rheumatology. - : The Journal of Rheumatology. - 0315-162X .- 1499-2752. ; 48:1, s. 94-100
- Relaterad länk:
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https://www.ncbi.nlm...
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http://kipublication...
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https://doi.org/10.3...
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Abstract
Ämnesord
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- Patients with dermatomyositis (DM) and polymyositis (PM) have reduced muscle endurance.The aim of this study was to streamline the Functional Index-2 (FI-2) by developing the Functional Index-3 (FI-3) and to evaluate its measurement properties, content and construct validity, and intra- and interrater reliability.Methods.A dataset of the previously performed and validated FI-2 (n = 63) was analyzed for internal redundancy, floor, and ceiling effects. The content of the FI-2 was revised into the FI-3. Construct validity and intrarater reliability of FI-3 were tested on 43 DM and PM patients at 2 rheumatology centers. Interrater reliability was tested in 25 patients. The construct validity was compared with the Myositis Activities Profile (MAP), Health Assessment Questionnaire (HAQ), and Borg CR-10 using Spearman correlation coefficient.Results.Spearman correlation coefficients of 63 patients performing FI-3 revealed moderate to high correlations between shoulder flexion and hip flexion tasks and similar correlations with MAP and HAQ scores; there were lower correlations for neck flexion task. All FI-3 tasks had very low to moderate correlations with the Borg scale. Intraclass correlation coefficients (ICC) of FI-3 tasks for intrarater reliability (n = 25) were moderate to good (0.88–0.98). ICC of FI-3 tasks for interrater reliability (n = 17) were fair to good (range 0.83–0.96).Conclusion.The FI-3 is an efficient and valid method for clinically assessing muscle endurance in DM and PM patients. FI-3 construct validity is supported by the significant correlations between functional tasks and the MAP, HAQ, and Borg CR-10 scores.
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- art (ämneskategori)
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