Psychometric Evaluation of the Original and Canadian French Version of the Activities-Specific Balance Confidence Scale Among People With Stroke
Abstract
Salbach NM, Mayo NE, Hanley JA, Richards CL, Wood-Dauphinee S. Psychometric evaluation of the original and Canadian French version of the Activities-Specific Balance Confidence scale among people with stroke.
Objective
To evaluate the internal and absolute reliability and construct validity of the Activities-Specific Balance Confidence (ABC) scale and a new Canadian French version (ABC-CF) of it among people with stroke.
Design
Cross-sectional data from a randomized controlled trial.
Setting
Community.
Participants
Ninety-one people with a residual walking deficit between 57 and 386 days poststroke.
Interventions
Not applicable.
Main Outcome Measures
The ABC and ABC-CF scales, Berg Balance Scale (BBS), comfortable and maximum gait speeds, Timed Up & Go (TUG) test, 6-minute walk test (6MWT), Barthel Index, physical function scale of the Medical Outcomes Study 36-Item Short-Form Health Survey, Geriatric Depression Scale (GDS), and the EQ-5D visual analog scale (EQ VAS).
Results
Internal consistency (Cronbach α) was .94 and .93 and the standard error of measurement was 5.05 and 5.13 for the ABC (n=51) and the ABC-CF (n=35) scales, respectively. Spearman ρ values ranged from .30 to .60 for the ABC scale and from .45 to .68 on the ABC-CF scale for associations with scores on the BBS, comfortable and maximum gait speeds, TUG, 6MWT, Barthel Index, physical function scale, GDS, and EQ VAS.
Conclusions
Evidence of internal and absolute reliability and of construct validity of the ABC and the ABC-CF scales supports their use for cross-sectional measurements of balance self-efficacy among community-dwelling people in the first year poststroke.
aDepartment of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada
bSchool of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
cDivision of Clinical Epidemiology, Royal Victoria Hospital, Montreal, QC, Canada
dRehabilitation Department, Laval University and Interdisciplinary Research Centre for Rehabilitation and Social Integration, Rehabilitation Institute of Quebec, Quebec City, QC, Canada.
Correspondence to Nancy M. Salbach, PhD, Dept of Physical Therapy, University of Toronto, 160-500 University Ave, Toronto, ON M5G 1V7, Canada.
Supported by the Canadian Institutes of Health Research (fellowship), the Quebec Réseau Provincial de Recherche en Adaptation-Réadaptation, the Heart and Stroke Foundation of Canada, and the Canadian Stroke Network.
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.
ABSTRACT