Reliability, validity, and agreement of the short-form Activities-specific Balance Confidence Scale in people with lower extremity amputations

Published on 2019-09-21T12:08:52Z (GMT) by
<div>Study design:<p>Test–retest with a 2-week interval.</p>Background:<p>Clinicians use the Activities-specific Balance Confidence Scale to understand balance confidence. A short-form Activities-specific Balance Confidence scale, was developed using the six most difficult tasks from the original Activities-specific Balance Confidence scale; however, short-form the short-form scale psychometrics and agreement with the original scale have yet to be explored in people with lower extremity amputations.</p>Objective:<p>To determine the relative and absolute reliability, construct validity, and agreement of the short-form Activities-specific Balance Confidence scale.</p>Methods:<p>Analysis for relative reliability and internal consistency was intraclass correlation coefficient and Cronbach’s <i>α</i>, respectively. Absolute reliability was measured using standard error of measurement and minimal detectable change. Bland–Altman plots measured agreement between scales. Construct validity was evaluated against the L Test using a Pearson-product moment correlation.</p>Results:<p>The short-form Activities-specific Balance Confidence (intraclass correlation coefficient = 0.92) and Activities-specific Balance Confidence (intraclass correlation coefficient = 0.91) scales had excellent relative reliability. Both scales demonstrated good internal consistency. Worse absolute reliability was observed in the short-form Activities-specific Balance Confidence scale. Construct validity against the L Test was confirmed. Bland–Altman plots indicated poor agreement between scales.</p>Conclusion:<p>Both scales exhibit excellent relative reliability and good internal consistency and construct validity. Poor agreement between short-form Activities-specific Balance Confidence and Activities-specific Balance Confidence indicates the scales should not be used interchangeably. Inadequate absolute reliability of the short-form Activities-specific Balance Confidence scale suggests the Activities-specific Balance Confidence should be the balance confidence scale of choice.</p>Clinical relevance:<p>Balance confidence is an important metric for our understanding of rehabilitation and community re-integration in people with lower extremity amputations. Due to inferior absolute reliability and a lack of appropriate items composing the short-form Activities-specific Balance Confidence scale, the full-scale Activities-specific Balance Confidence is recommended for the assessment of balance confidence in this population.</p></div>

Cite this collection

Fuller, Katherine; Omaña Moreno, Humberto Adolfo; Frengopoulos, Courtney; Payne, Michael W; Viana, Ricardo; Hunter, Susan W (2019): Reliability, validity, and agreement of the short-form Activities-specific Balance Confidence Scale in people with lower extremity amputations. SAGE Journals. Collection. https://doi.org/10.25384/SAGE.c.4674215.v1