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Title: Validity of the Activities-specific Balance Confidence Scale in individuals with chronic obstructive pulmonary disease.
Austin Authors: Alsubheen, Sanaa A;Beauchamp, Marla K;Ellerton, Cindy;Goldstein, Roger;Alison, Jennifer A;Dechman, Gail;Haines, Kimberley J ;Harrison, Samantha L;Holland, Anne E ;Lee, Annemarie L;Marques, Alda;Spencer, Lissa;Stickland, Michael;Skinner, Elizabeth H;Brooks, Dina
Affiliation: Department of Physical Therapy, Faculty of Medicine, University of Toronto, Toronto, ON, Canada..
School of Rehabilitation Science, Faculty of Health Science, McMaster University, Hamilton, ON, Canada..
School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, Australia..
Allied Health, Sydney Local Health District, Sydney, Australia..
Physiotherapy Department, Western Health, Melbourne, Australia..
Department of Physiotherapy, Alfred Health, Melbourne, Australia..
Respiratory Research, Monash University, Melbourne, Australia..
Institute for Breathing and Sleep
Department of Physiotherapy, School of Primary and Allied Health Care, Monash University, Melbourne, Australia..
Department of Allied Health Research, Cabrini Health, Malvern, Australia..
Department of Physiotherapy, Royal Prince Alfred Hospital, Camperdown, Australia..
Department of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada..
Department of Medicine, Respirology, Dalhousie University and Nova Scotia Health Authority, Halifax, NS, Canada..
G.F. MacDonald Centre for Lung Health, Covenant Health, Edmonton, AB, Canada..
School of Physiotherapy, Faculty of Health, Dalhousie University, Halifax, NS, Canada..
School of Health and Life Sciences, Teesside University, Middlesbrough, UK..
Research and Rehabilitation Laboratory, School of Health Sciences, ESSUA) and Institute of Biomedicine, iBiMED), University of AveiroLab3R-Respiratory, Aveiro, Portugal..
Division of Pulmonary Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada..
Rehabilitation Sciences Institute, School of Graduate Studies, University of Toronto, Toronto, ON, Canada..
Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada..
Issue Date: Jun-2022
Date: 2022-07-12
Publication information: Expert Review of Respiratory Medicine 2022; 16(6): 689-696.
Abstract: Limited research assessed the validity of the Activities-specific Balance Confidence, ABC) Scale in individuals with chronic obstructive pulmonary disease, COPD) at risk of falls. We report on the scale's construct and criterion validity. Construct validity was established by assessing known groups, convergent, and divergent validity. A receiver operating characteristic, (ROC) curve and logistic regression examined the criterion validity of the scale. In 223 individuals with COPD, the ABC Scale significantly, (p < 0.001) discriminated between groups, with lower scores for females [Mean difference (MD) = 10%], rollator use [MD = 13%], and fallers [MD = 12%], and had a strong association [r = 0.58, p < 0.001] with Berg Balance Scale. The scale distinguished fallers from non-fallers with a cutoff value of 58% [Area Under the Curve = 0.64, 95% CI = 0.57-0.72, p < 0.001] and significantly identified fall status [B, SE = -0.03, 0.01, p < 0.001] with an odds ratio of 0.97 [95%CI = 0.96-0.99]. The sensitivity, specificity, and test accuracy were: 61, 58, and 60%, respectively. The ABC Scale showed evidence for known groups, convergent, and divergent validity and can assist in identifying fall status in individuals with COPD.
DOI: 10.1080/17476348.2022.2099378
ORCID: 0000-0001-9841-7522
Journal: Expert review of respiratory medicine
PubMed URL: 35792741
PubMed URL:
Type: Journal Article
Subjects: ABC Scale
balance confidence
fall status
Appears in Collections:Journal articles

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