Low back pain: what determines functional outcome at six months? An observational study
Michele C Harms1, Charles E Peers, Derek Chase
1Faculty of Health and Social Care Sciences, Kingston University, St Georges University of London, Cranmer Terrace, London SW17 0RE, UK. M.Harms@Kingston.ac.uk
BMC Musculoskeletal Disorders
|October 15, 2010
Summary
Episodic back pain predicts better recovery than continuous pain. Non-white ethnicity was associated with poorer outcomes in low back pain patients, contrary to previous findings.
Area of Science:
- Low back pain research
- Prognostic factor analysis
- Epidemiology of musculoskeletal disorders
Background:
- Back pain disability is rising exponentially, increasing medical and societal costs.
- The specific prognostic indicators influencing recovery patterns in low back pain are not well understood.
- Identifying predictive factors is crucial for effective patient management and resource allocation.
Purpose of the Study:
- To determine the prognostic value of demographic, psychosocial, employment, and clinical factors on recovery outcomes in patients with low back pain.
- To identify key predictors of functional improvement in individuals experiencing acute or chronic low back pain.
- To refine understanding of factors influencing the trajectory of low back pain recovery.
Main Methods:
- A prospective cohort study with a six-month follow-up was conducted at a multidisciplinary back pain clinic.
- 593 consecutive patients with simple low back pain were recruited from general practice referrals.
- Baseline questionnaires captured prognostic variables; primary outcomes were changes in the Roland Morris Disability Questionnaire and SF-36 physical functioning scale.
Main Results:
- Significant improvements were observed in Roland Morris scores (3.8 points) and SF-36 physical functioning (10.7 points) at six months.
- While ten factors initially showed links to outcome, only two remained significant in multiple regression analysis.
- Episodic pain (OR 2.64) predicted better recovery, whereas non-white ethnicity (OR 0.41) was associated with poorer outcomes.
Conclusions:
- Short-lived pain episodes in the preceding year were associated with greater improvement in low back pain patients.
- Patients of Middle Eastern, North African, and Chinese ethnicity showed minimal improvement, suggesting potential ethnic disparities in recovery.
- The study did not support previous findings suggesting a broad range of factors predict low back pain outcomes.
