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    Measurement of lower limb volume: Agreement between the vertically oriented perometer and a tape measure method

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    eResearch_3121.pdf (490.2Kb)
    Date
    2013-09
    Author
    Tan, Chee-Wee
    Coutts, Fiona
    Bulley, Catherine
    Metadata
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    Citation
    Tan, C., Coutts, F. & Bulley, C. (2013) Measurement of lower limb volume: Agreement between the vertically oriented perometer and a tape measure method, Physiotherapy, vol. 99, , pp. 247-251,
    Abstract
    Objective: To investigate the agreement between lower limb volume measurements for the vertically oriented perometer and a tape measure method. Design: Between-methods agreement and test-retest reliability study. Setting: University setting. Participants: Thirty university staff and students were recruited using convenience sampling with no participant drop-outs. Interventions: All participants' dominant lower limb volumes were measured using the vertically oriented perometer and a tape measure method. Main outcome measures: The Bland-Altman difference plot was reported for determining the bias between the two methods and its 95% confidence interval. Test-retest reliability and the measurement error for the perometer method were determined using the ICC(2,1) model and within-subject standard deviation (sw) respectively. Results: There was a lack of agreement between the tape measure and perometer method. The Bland-Altman difference plot showed that the tape measure method overestimated limb volume by 157 ml compared to the perometer method. A 95% confidence interval of -834 ml to 519 ml was observed. The test-retest reliability of the perometer method was ICC(2,1) = 0.99. The measurement error of the perometer method was clinically acceptable (sw = 121 ml). Conclusions: There was a lack of agreement between the two methods investigated. Therefore the perometer and tape measure methods are not interchangeable. It is recommended that future validity and reliability studies for the vertically oriented perometer are conducted on clinical populations. 2012 Chartered Society of Physiotherapy.
    Official URL
    http://dx.doi.org/10.1016/j.physio.2012.12.004
    URI
    https://eresearch.qmu.ac.uk/handle/20.500.12289/3121
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