Intra- and Inter-Rater Reliability of the Mini-Balance Evaluation Systems Test in Individuals with Stroke
- *Corresponding Author:
- Lone Jørgensen
Department of Health and Care Sciences
University of Tromsø, N-9037 Tromsø, Norway
Tel: +47 77646443
E-mail: [email protected]
Received Date: November 15, 2013; Accepted Date: January 16, 2014; Published Date: January 20, 2014
Citation: Dahl SSH, Jørgensen L (2014) Intra- and Inter-Rater Reliability of the Mini-Balance Evaluation Systems Test in Individuals with Stroke. Int J Phys Med Rehabil 2:177. doi: 10.4172/2329-9096.1000177
Copyright: © 2014 Dahl SSH, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Objective: The aim of this study was to assess intra- and inter-rater reliability of the ‘The Mini-Balance Evaluation Systems Test (Mini-BESTest)’ in adults with stroke, based on video recordings of their test performances. Methods: We included 24 adults with stroke classified at four different ambulatory levels, ranging from the ability to ambulate within the household only, to normal ambulation. Mini-BESTest performance of the participants were filmed and then scored by three raters twice, with four weeks between the sessions. None of the raters had used the test prior to the study, but attended a three-hour training session to become familiar with the test and scoring instructions just before study-start. Relative reliability was investigated for by calculating intraclass correlation coefficients (ICC1.1 and ICC3.1). Absolute reliability was assessed by calculating within-subject standard deviation (sw) and smallest detectable difference (SDD). For each individual items of the Mini-BESTest, Cohen’s kappa (k) was calculated. Results: The study showed that the Mini-BESTest had excellent intra-rater reliability (ICC1.1=0.94−0.99 and ICC3.1=0.97−0.99) and inter-rater reliability (ICC1.1=0.97−0.99 and ICC3.1=0.97−0.99). Kappa values for the individual items ranged between 0.21 and 1.00. The majority of items (intra-rater=88%, inter-rater=78%) showed very good or good agreement. The smallest detectable change at 95% confidence interval was ≤4 points for intra-rater assessments and ≤ 3 points for inter-rater assessments. Conclusions: We conclude that the reliability of the Mini-BESTest based on video recordings of adults with stroke is excellent, even though the ratings are performed by novice assessors.