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    Uncertainty in monetary cost estimates for assessing working postures using inclinometry, observation or self-report

    Access Status
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    Authors
    Waleh Åström, A.
    Heiden, M.
    Mathiassen, Svend
    Strömberg, A.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Waleh Åström, A. and Heiden, M. and Mathiassen, S. and Strömberg, A. 2018. Uncertainty in monetary cost estimates for assessing working postures using inclinometry, observation or self-report. Applied Ergonomics. 71: pp. 73-77.
    Source Title
    Applied Ergonomics
    DOI
    10.1016/j.apergo.2018.04.005
    ISSN
    0003-6870
    School
    School of Physiotherapy and Exercise Science
    URI
    http://hdl.handle.net/20.500.11937/69207
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 Objective: To assess uncertainty in cost estimates for collecting posture data by inclinometry, observations and self-report. Method: In a study addressing physical workloads at a paper mill, costs were calculated for measuring postures of twenty-eight workers during three shifts. Uncertainty in costs was assessed for all three methods as the range between an assumed best case (lowest cost) and worst case (highest cost) using scenario analysis. Results: The cost for observation was larger, but also more uncertain (€16506 and €89552 in the best and worst case, respectively) than that of inclinometry (€7613 - €45896). Self-report costs were both lower and less uncertain (€3743 - €23368). Conclusions: The extent of uncertainty in cost estimates implies that observation could be less expensive than inclinometry, e.g., in a scenario where experienced observers could use existing software, while inclinometers would have to be purchased. We propose adding uncertainty assessments to cost estimates when selecting a method for measuring working postures, and offer guidance in how to proceed in a specific setting.

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