Abstract
Objective
To examine the interrater and intrarater reliability of the Balance Computerized Adaptive
Test (Balance CAT) in patients with chronic stroke having a wide range of balance
functions.
Design
Repeated assessments design (1wk apart).
Setting
Seven teaching hospitals.
Participants
A pooled sample (N=102) including 2 independent groups of outpatients (n=50 for the
interrater reliability study; n=52 for the intrarater reliability study) with chronic
stroke.
Interventions
Not applicable.
Main Outcome Measures
Balance CAT.
Results
For the interrater reliability study, the values of intraclass correlation coefficient,
minimal detectable change (MDC), and percentage of MDC (MDC%) for the Balance CAT
were .84, 1.90, and 31.0%, respectively. For the intrarater reliability study, the
values of intraclass correlation coefficient, MDC, and MDC% ranged from .89 to .91,
from 1.14 to 1.26, and from 17.1% to 18.6%, respectively.
Conclusions
The Balance CAT showed sufficient intrarater reliability in patients with chronic
stroke having balance functions ranging from sitting with support to independent walking.
Although the Balance CAT may have good interrater reliability, we found substantial
random measurement error between different raters. Accordingly, if the Balance CAT
is used as an outcome measure in clinical or research settings, same raters are suggested
over different time points to ensure reliable assessments.
Keywords
List of abbreviations:
ANOVA (analysis of variance), BBS (Berg Balance Scale), CAT (computerized adaptive test), ICC (intraclass correlation coefficient), LOA (limits of agreement), MDC (minimal detectable change), MDC% (percentage of minimal detectable change), PASS (Postural Assessment Scale for Stroke Patients)To read this article in full you will need to make a payment
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Article info
Publication history
Published online: April 10, 2018
Footnotes
Disclosures: none.
Identification
Copyright
© 2018 by the American Congress of Rehabilitation Medicine
