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    Reliability of pressure pain threshold testing in healthy pain free young adults

    Access Status
    Fulltext not available
    Authors
    Waller, R.
    Straker, Leon
    O'Sullivan, Peter
    Sterling, M.
    Smith, A.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Waller, R. and Straker, L. and O'Sullivan, P. and Sterling, M. and Smith, A. 2015. Reliability of pressure pain threshold testing in healthy pain free young adults. Scandinavian Journal of Pain. 9: pp. 38-41.
    Source Title
    Scandinavian Journal of Pain
    DOI
    10.1016/j.sjpain.2015.05.004
    ISSN
    1877-8860
    School
    School of Physiotherapy and Exercise Science
    Remarks

    The authors of the above paper have noticed significant errors in Table 2. The errors appear in columns 5 to 8, in which the computed sample sizes are incorrect. Corrigendum available at https://doi.org/10.1016/j.sjpain.2016.06.008

    URI
    http://hdl.handle.net/20.500.11937/17476
    Collection
    • Curtin Research Publications
    Abstract

    Background and aims: Investigation of the multidimensional correlates of pressure pain threshold (PPT) requires the study of large cohorts, and thus the use of multiple raters, for sufficient statistical power. Although PPT testing has previously been shown to be reliable, the reliability of multiple raters and investigation for systematic bias between raters has not been reported. The aim of this study was to evaluate the intrarater and interrater reliability of PPT measurement by handheld algometer at the wrist, leg, cervical spine and lumbar spine. Additionally the study aimed to calculate sample sizes required for parallel and cross-over studies for various effect sizes accounting for measurement error. Methods: Five research assistants (RAs) each tested 20 pain free subjects at the wrist, leg, cervical and lumbar spine. Intraclass correlation coefficient (ICC), standard error of measurement (SEM) and systematic bias were calculated. Results: Both intrarater reliability (ICC = 0.81–0.99) and interrater reliability (ICC = 0.92–0.95) were excellent and intrarater SEM ranged from 79 to 100 kPa. There was systematic bias detected at three sites with no single rater tending to consistently rate higher or lower than others across all sites. Conclusion: The excellent ICCs observed in this study support the utility of using multiple RAs in large cohort studies using standardised protocols, with the caveat that an absence of any confounding of study estimates by rater is checked, due to systematic rater bias identified in this study.

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