Highlights
- •The Balance Assessment in Sitting and Standing Positions has sound psychometric properties.
- •The Balance Assessment in Sitting and Standing Positions is as responsive as the Postural Assessment Scale for Stroke Patients.
- •Rasch scores of the Balance Assessment in Sitting and Standing Positions can identify patients' balance ability.
Abstract
Objective
To validate the psychometric properties of the Balance Assessment in Sitting and Standing
Positions, including validity (unidimensionality and concurrent validity), reliability
(Rasch reliability), and responsiveness (compared with the Postural Assessment Scale
for Stroke Patients [PASS]) and to transform the Balance Assessment in Sitting and
Standing Positions from an ordinal-level measure into an interval-level measure.
Design
Retrospective cross-sectional study.
Setting
Medical records from a medical center.
Participants
Patients with stroke (N=1193).
Interventions
Not applicable.
Main Outcome Measures
The 4-item Balance Assessment in Sitting and Standing Positions was used, assessing
static sitting balance, dynamic sitting balance, static standing balance, and dynamic
standing balance.
Results
Data of 1193 patients with stroke were included for Rasch analysis. The 4 items of
the Balance Assessment in Sitting and Standing Positions constituted a unidimensional
construct (infit/outfit mean square, .75–1.05), had good concurrent validity (r=.70–.90), and had sufficient Rasch reliability (.93). The Balance Assessment in Sitting
and Standing Positions had large responsiveness (effect size, 1.20; standardized response
mean, 1.51) and was comparable with the PASS (effect size, .90; standardized response
mean, 1.32).
Conclusions
The Balance Assessment in Sitting and Standing Positions has sound psychometric properties.
The transformed-Rasch scores of the Balance Assessment in Sitting and Standing Positions
can be used to identify patients' balance function and detect patients' changes.
Keywords
List of abbreviations:
BBS (Berg Balance Scale), ES (effect size), MNSQ (mean square), PASS (Postural Assessment Scale for Stroke Patients), SRM (standardized response mean)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: February 02, 2016
Footnotes
Supported by grants from the Ministry of Science and Technology (grant no. MOST 103-2314-B-002-012-MY3) and National Taiwan University (grant no. 104R4000).
Disclosures: none.
Identification
Copyright
© 2016 by the American Congress of Rehabilitation Medicine
