| Author/Editor | Franchignoni, Franco; Bavec, Andrej; Zupanc, Urška; Giordano, Andrea; Albensi, Caterina; Burger, Helena | |
| Title | Validation of the Activities-specific Balance Confidence scale with 5-option response format in Slovene lower-limb prosthetic users | |
| Type | članek | |
| Vol. and No. | Letnik 102, št. 4 | |
| Publication year | 2021 | |
| Volume | str. 619-625 | |
| ISSN | 0003-9993 - Archives of physical medicine and rehabilitation | |
| Language | eng | |
| Abstract | 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. | |
| Keywords | amputation postural balance psychometrics rehabilitation amputacija telesno ravnotežje psihometrija rehabilitacija |