Interrater and Intrarater Reliability of the Balance Computerized Adaptive Test in Patients With Stroke.
Arch Phys Med Rehabil 2018;
99:1499-1506. [PMID:
29653107 DOI:
10.1016/j.apmr.2018.03.011]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 03/15/2018] [Accepted: 03/19/2018] [Indexed: 11/23/2022]
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.
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