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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. DESIGN: Prospective 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. SETTING: National Health Service physiotherapy departments. PARTICIPANTS: Participants (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 MEASURES: Chronic disability based on Neck Disability Index scores. RESULTS: 136 (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. CONCLUSION: Baseline 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.

Original publication

DOI

10.1016/j.physio.2014.04.004

Type

Journal article

Journal

Physiotherapy

Publication Date

03/2015

Volume

101

Pages

34 - 43

Keywords

Disability, Neck injuries, Pain, Physiotherapy, Rehabilitation, Whiplash injuries, Acute Disease, Chronic Pain, Cohort Studies, Confidence Intervals, Diagnostic Self Evaluation, Disability Evaluation, Female, Humans, Injury Severity Score, Male, Neck Pain, Odds Ratio, Pain Measurement, Physical Therapy Modalities, Prognosis, Prospective Studies, Psychology, Risk Assessment, Risk Factors, Treatment Outcome, United Kingdom, Whiplash Injuries