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A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index

BACKGROUND: Mobility capacity is a key outcome domain in neurorehabilitation. The de Morton Mobility Index (DEMMI), an established and generic outcome assessment of mobility capacity in older patients, is promising for use in neurorehabilitation. The aim of this study was to examine the measurement...

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Autores principales: Braun, Tobias, Marks, Detlef, Thiel, Christian, Grüneberg, Christian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8317343/
https://www.ncbi.nlm.nih.gov/pubmed/34320926
http://dx.doi.org/10.1186/s12883-021-02327-0
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author Braun, Tobias
Marks, Detlef
Thiel, Christian
Grüneberg, Christian
author_facet Braun, Tobias
Marks, Detlef
Thiel, Christian
Grüneberg, Christian
author_sort Braun, Tobias
collection PubMed
description BACKGROUND: Mobility capacity is a key outcome domain in neurorehabilitation. The de Morton Mobility Index (DEMMI), an established and generic outcome assessment of mobility capacity in older patients, is promising for use in neurorehabilitation. The aim of this study was to examine the measurement properties of the DEMMI in rehabilitation inpatients with neurological conditions. METHODS: Cross-sectional study including a mixed sample of adult inpatients in a neurorehabilitation hospital. Structural validity, unidimensionality and measurement invariance (Rasch analysis), construct validity, internal consistency reliability, and inter-rater reliability of the DEMMI (scale range: 0–100 points) were established. The minimal detectable change, the 95% limits of agreement, and possible floor and ceiling effects were calculated to indicate interpretability. RESULTS: We analyzed validity (n = 348) and reliability (n = 133) in two samples. In both samples, the majority of participants had a sub-acute stroke or Parkinson’s disease. Rasch analysis indicated unidimensionality with an overall fit to the model (chi-square = 59.4, P = 0.074). There was no relevant measurement invariance by disease group. Hypotheses-based correlation analyses (DEMMI and other functional outcome assessments) showed sufficient construct validity. Internal consistency reliability (Cronbach’s alpha = 0.94) and inter-rater reliability (intraclass correlation coefficient = 0.94; 95% confidence interval: 0.91–0.95) were sufficient. The minimal detectable change with 90% confidence was 15.0 points and the limits of agreement were 39%. No floor or ceiling effects were observed. CONCLUSIONS: Results indicate sufficient measurement properties of the DEMMI in rehabilitation inpatients with neurological conditions. The DEMMI can be used as a generic outcome assessment of mobility capacity in neurorehabilitation. TRIAL REGISTRATION: German Clinical Trials Register (DRKS00004681). Registered May 6, 2013. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12883-021-02327-0.
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spelling pubmed-83173432021-07-28 A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index Braun, Tobias Marks, Detlef Thiel, Christian Grüneberg, Christian BMC Neurol Research BACKGROUND: Mobility capacity is a key outcome domain in neurorehabilitation. The de Morton Mobility Index (DEMMI), an established and generic outcome assessment of mobility capacity in older patients, is promising for use in neurorehabilitation. The aim of this study was to examine the measurement properties of the DEMMI in rehabilitation inpatients with neurological conditions. METHODS: Cross-sectional study including a mixed sample of adult inpatients in a neurorehabilitation hospital. Structural validity, unidimensionality and measurement invariance (Rasch analysis), construct validity, internal consistency reliability, and inter-rater reliability of the DEMMI (scale range: 0–100 points) were established. The minimal detectable change, the 95% limits of agreement, and possible floor and ceiling effects were calculated to indicate interpretability. RESULTS: We analyzed validity (n = 348) and reliability (n = 133) in two samples. In both samples, the majority of participants had a sub-acute stroke or Parkinson’s disease. Rasch analysis indicated unidimensionality with an overall fit to the model (chi-square = 59.4, P = 0.074). There was no relevant measurement invariance by disease group. Hypotheses-based correlation analyses (DEMMI and other functional outcome assessments) showed sufficient construct validity. Internal consistency reliability (Cronbach’s alpha = 0.94) and inter-rater reliability (intraclass correlation coefficient = 0.94; 95% confidence interval: 0.91–0.95) were sufficient. The minimal detectable change with 90% confidence was 15.0 points and the limits of agreement were 39%. No floor or ceiling effects were observed. CONCLUSIONS: Results indicate sufficient measurement properties of the DEMMI in rehabilitation inpatients with neurological conditions. The DEMMI can be used as a generic outcome assessment of mobility capacity in neurorehabilitation. TRIAL REGISTRATION: German Clinical Trials Register (DRKS00004681). Registered May 6, 2013. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12883-021-02327-0. BioMed Central 2021-07-28 /pmc/articles/PMC8317343/ /pubmed/34320926 http://dx.doi.org/10.1186/s12883-021-02327-0 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Research
Braun, Tobias
Marks, Detlef
Thiel, Christian
Grüneberg, Christian
A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index
title A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index
title_full A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index
title_fullStr A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index
title_full_unstemmed A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index
title_short A generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de Morton Mobility Index
title_sort generic outcome assessment of mobility capacity in neurorehabilitation: measurement properties of the de morton mobility index
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8317343/
https://www.ncbi.nlm.nih.gov/pubmed/34320926
http://dx.doi.org/10.1186/s12883-021-02327-0
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