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  • Validation of the Activities-specific Balance Confidence scale with 5-option response format in Slovene lower-limb prosthetic users
    Franchignoni, Franco ...
    Objective: To examine the psychometric properties of the Activities-specific Balance Confidence (ABC) scale administered in the Slovene version with a simplified 5-option response format (ABC-5/SLO) ... using Rasch analysis. Design: Methodological research on data gathered in a cross-sectional study. Setting: Outpatient university rehabilitation clinic. Participants: A convenience sample of adults with unilateral lower-limb amputation (NZ138; 75% men) longer than 6 months who regularly wear a prosthesis. Intervention: Not applicable. Main Outcome Measures: We evaluated functioning of rating scale categories, internal construct validity, reliability indices, and dimensionality using the ABC-5/SLO (0Zno confidence to 4Zcomplete confidence). Results: The ABC-5/SLO rating scale fulfilled the category functioning criteria. All items fit the underlying scale construct (balance confidence) except item 8 (%walk outside the house to a car parked in the driveway%), which was overfitting. The person abilities-item difficulty matching (targeting) was good. The person separation reliability was .92, and the item separation reliability was .99. Analysis of the standardized Rasch residuals showed the scale%s unidimensionality and absence of high item dependency (residual correlations, <.30). The correlation between the ABC-5/SLO and the Prosthetic Mobility Questionnaire (Rasch measures) was high (rZ.84), as expected. Minor signs of item redundancy were found. Conclusions: The simplified ABC-5/SLO scale is a valid and reliable measure of balance confidence for individuals with lower-limb amputation. It is possible to transform the ordinal summed raw scores of the ABC-5/SLO into interval-level measurements using a nomogram.
    Source: Archives of physical medicine and rehabilitation. - ISSN 0003-9993 (Vol. 102, no. 4, Apr. 2021, str. 619-625)
    Type of material - article, component part
    Publish date - 2021
    Language - english
    COBISS.SI-ID - 42549251

    Link(s):

    https://www.sciencedirect.com/science/article/pii/S0003999320312296?via%3Dihub
    DOI

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