Inter-rater reliability of output measures for a posture matching assessment approach: a pilot study with food service workers |
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Authors: | Cann A P Connolly M Ruuska R MacNeil M Birmingham T B Vandervoort A A Callaghan J P |
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Affiliation: | Doctoral Program in Rehabilitation Sciences, Faculty of Health Sciences, University of Western London, Ontario, Canada. |
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Abstract: | Despite the ongoing health problem of repetitive strain injuries, there are few tools currently available for ergonomic applications evaluating cumulative loading that have well-documented evidence of reliability and validity. The purpose of this study was to determine the inter-rater reliability of a posture matching based analysis tool (3DMatch, University of Waterloo) for predicting cumulative and peak spinal loads. A total of 30 food service workers were each videotaped for a 1-h period while performing typical work activities and a single work task was randomly selected from each for analysis by two raters. Inter-rater reliability was determined using intraclass correlation coefficients (ICC) model 2,1 and standard errors of measurement for cumulative and peak spinal and shoulder loading variables across all subjects. Overall, 85.5% of variables had moderate to excellent inter-rater reliability, with ICCs ranging from 0.30-0.99 for all cumulative and peak loading variables. 3DMatch was found to be a reliable ergonomic tool when more than one rater is involved. |
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