Rasch validation of the German translation of the Prosthetic Limb Users Survey of Mobility short forms in people with lower limb amputation.
Journal
Prosthetics and orthotics international
ISSN: 1746-1553
Titre abrégé: Prosthet Orthot Int
Pays: France
ID NLM: 7707720
Informations de publication
Date de publication:
01 Oct 2023
01 Oct 2023
Historique:
received:
19
05
2022
accepted:
19
09
2022
medline:
23
10
2023
pubmed:
24
1
2023
entrez:
23
1
2023
Statut:
ppublish
Résumé
Prostheses are a primary rehabilitative intervention for people after lower limb amputation. To appropriately measure the effectiveness of prosthetic interventions, valid and reliable measures of prosthetic mobility are required. The Prosthetic Limb Users Survey of Mobility (PLUS-M) is a promising instrument for measuring prosthesis users' mobility. However, German translations of the PLUS-M short forms have not yet been validated. Rasch validation of the German translation of the PLUS-M short forms in people with lower limb amputation. This study is based on a cross-sectional survey of prosthesis-using lower limb amputees from a nation-wide cohort. PLUS-M data (the 7-item and the 12-item shortforms; PLUS-M-7 and PLUS-M-12, respectively) from 194 lower limb prosthesis users were subjected to Rasch analysis, an advanced statistical method for assessing if the measurement properties of a questionnaire comply with a wide spectrum of psychometric requirements. Analysis showed appropriate rating scale functioning, good internal construct validity (item fit), unidimensionality, and good targeting of the PLUS-M-7 and PLUS-M-12 short forms. Moreover, the greater conditional measurement precision of PLUS-M-12 (regarding higher test information and lower standard error of mobility estimates) was quantified. Rasch analysis of the German translation of both PLUS-M short forms showed good psychometric qualities. In addition, our study showed that test scores from the PLUS-M-12 are more accurate. Therefore, the PLUS-M-12 is recommended for individual-level clinical applications (e.g., classification or change assessment).
Sections du résumé
BACKGROUND
BACKGROUND
Prostheses are a primary rehabilitative intervention for people after lower limb amputation. To appropriately measure the effectiveness of prosthetic interventions, valid and reliable measures of prosthetic mobility are required. The Prosthetic Limb Users Survey of Mobility (PLUS-M) is a promising instrument for measuring prosthesis users' mobility. However, German translations of the PLUS-M short forms have not yet been validated.
OBJECTIVES
OBJECTIVE
Rasch validation of the German translation of the PLUS-M short forms in people with lower limb amputation.
STUDY DESIGN
METHODS
This study is based on a cross-sectional survey of prosthesis-using lower limb amputees from a nation-wide cohort.
METHODS
METHODS
PLUS-M data (the 7-item and the 12-item shortforms; PLUS-M-7 and PLUS-M-12, respectively) from 194 lower limb prosthesis users were subjected to Rasch analysis, an advanced statistical method for assessing if the measurement properties of a questionnaire comply with a wide spectrum of psychometric requirements.
RESULTS
RESULTS
Analysis showed appropriate rating scale functioning, good internal construct validity (item fit), unidimensionality, and good targeting of the PLUS-M-7 and PLUS-M-12 short forms. Moreover, the greater conditional measurement precision of PLUS-M-12 (regarding higher test information and lower standard error of mobility estimates) was quantified.
CONCLUSIONS
CONCLUSIONS
Rasch analysis of the German translation of both PLUS-M short forms showed good psychometric qualities. In addition, our study showed that test scores from the PLUS-M-12 are more accurate. Therefore, the PLUS-M-12 is recommended for individual-level clinical applications (e.g., classification or change assessment).
Identifiants
pubmed: 36689667
doi: 10.1097/PXR.0000000000000201
pii: 00006479-990000000-00092
doi:
Substances chimiques
5,6-dihydroxy-2-dimethylaminotetralin
39478-90-5
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
552-557Informations de copyright
Copyright © 2022 International Society for Prosthetics and Orthotics.
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