• Eur J Pain · Mar 2011

    Contributions of prognostic factors for poor outcome in primary care low back pain patients.

    • Kate M Dunn, Kelvin P Jordan, and Peter R Croft.
    • Arthritis Research UK Primary Care Centre, Keele University, UK. k.m.dunn@cphc.keele.ac.uk
    • Eur J Pain. 2011 Mar 1; 15 (3): 313-9.

    BackgroundBack pain is common and some sufferers consult GPs, yet many sufferers develop persistent problems. Combining information on risk of persistence and prognostic indicator prevalence provides more information on potential intervention targets than risk estimates alone.AimsTo determine the proportion of primary care back pain patients with persistent problems whose outcome is related to measurable prognostic factors.MethodsProspective cohort study of back pain patients (30-59 years) at five general practices in Staffordshire, UK (n=389). Baseline factors (demographic; episode duration; symptom severity; pain widespreadness; anxiety; depression; catastrophising; fear-avoidance; self-rated health) were assessed for their association with disabling and limiting pain after 12-months. The proportion of those with persistent problems whose outcome was related to each factor was calculated.ResultsPrevalence of prognostic factors ranged from 23% to 87%. Strongest predictors were unemployment (adjusted relative risk (RR) 4.2; 95% CI 2.0, 8.5) and high pain intensity (4.1; 1.7, 9.9). The largest proportions of persistent problems were related to high pain intensity (68%; 95% CI 27, 87%) and unemployment (64%; 33, 82%). Combining these indicated that 85% of poor back pain outcome is related to these two factors. Poor self-rated health, functional disability, upper body pain and pain bothersomeness were related with outcome for over 40% of those with persistent problems.ConclusionsSeveral factors increased risk of poor outcome in back pain patients, notably high pain and unemployment. These risks in combination with high prevalence of risk factors in this population distinguish factors that can help identify targets or sub-groups for intervention.Copyright © 2010 European Federation of International Association for the Study of Pain Chapters. Published by Elsevier Ltd. All rights reserved.

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