• Physiotherapy · Mar 2015

    Risk factors for chronic disability in a cohort of patients with acute whiplash associated disorders seeking physiotherapy treatment for persisting symptoms.

    • Esther Williamson, Mark A Williams, Simon Gates, and Sarah E Lamb.
    • Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, United Kingdom. Electronic address: esther.williamson@ndorms.ox.ac.uk.
    • Physiotherapy. 2015 Mar 1;101(1):34-43.

    Objectives(1) To identify risk factors for chronic disability in people with acute whiplash associated disorders (WAD). (2) To estimate the impact of the numbers of risk factors present.DesignProspective cohort study. Data were collected, on average, 32 days after injury (SD=10.9) and 12 months later. Baseline measures of pain, disability, neck movement, psychological and behavioural factors were independent variables and chronic disability at 12 months was the dependent variable in a multivariable logistic regression analysis.SettingNational Health Service physiotherapy departments.ParticipantsParticipants (n=599) with symptoms 3 weeks after injury, self-referred to physiotherapy as part of a randomised controlled trial. 430 (72%) participants provided complete data for this analysis.Main Outcome MeasuresChronic disability based on Neck Disability Index scores.Results136 (30%) participants developed chronic disability. High baseline disability (OR 3.3, 95% CI 1.97 to 5.55), longer predicted recovery time (OR 2.4, 95% CI 1.45 to 3.87), psychological distress (OR 1.9, 95%CI 1.05 to 3.51), passive coping (OR 1.8, 95% CI 1.07 to 2.97) and greater number of symptoms (OR 1.7, 95% CI 1.07 to 2.78) were associated with chronic disability. One risk factor resulted in 3.5 times the risk (95% CI 1.04 to 11.45) of chronic disability but this risk increased to 16 times (95%CI 5.36 to 49.27) in those with four or five risk factors.ConclusionBaseline disability had the strongest association with chronic disability but psychological and behavioural factors were also important. Treatment strategies should reflect this which may require a change to current physiotherapy approaches for acute WAD. The number of risk factors present should be considered when evaluating potential for poor outcome.Copyright © 2014 Chartered Society of Physiotherapy. Published by Elsevier Ltd. All rights reserved.

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