The ABLE scale: the development and psychometric properties of an outcome measure for the spinal cord injury population

Physical Therapy
Elizabeth M ArdolinoSusan Harkema

Abstract

A paucity of information exists on the psychometric properties of several balance outcome measures. With the exception of the Modified Functional Reach Test, none of these balance outcome measures were developed specifically for the population with spinal cord injury (SCI). A new balance assessment tool for people with SCI, the Activity-based Balance Level Evaluation (ABLE scale), was developed and tested. The purposes of this study were: (1) to develop a scale capturing the wide spectrum of functional ability following SCI and (2) to assess the initial psychometric properties of the scale using a Rasch analysis. A methodological research design was used to test the initial psychometric properties of the ABLE scale. The Delphi technique was used to establish the original 28-item ABLE scale. People with SCI at each of 4 centers (n=104) were evaluated using the ABLE scale. A Rasch analysis was conducted to test for targeting, item difficulty, item bias, and unidimensionality. An analysis of variance was completed to test for discriminant validity. The Rasch analysis revealed a scale with minimal floor and ceiling effects and a wide range of item difficulty capturing the large scope of functional capacity after SCI. Multiple redun...Continue Reading

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Citations

Aug 28, 2012·Archives of Physical Medicine and Rehabilitation·Susan J HarkemaAndrea L Behrman
Feb 16, 2018·The Journal of Spinal Cord Medicine·Kamyar MomeniGail F Forrest
Dec 29, 2020·Progress in Rehabilitation Medicine·Koshi MatsuokaMichinari Fukuda

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