Outcome measures for low back pain research. A proposal for standardized use

Area of Science:

• Clinical outcomes research
• Epidemiology of musculoskeletal disorders
• Health services research

Background:

• Standardizing outcome measures in back pain research is crucial for comparing results across studies and improving reporting.
• Back pain assessment is complex, involving multiple dimensions like symptoms, function, well-being, work disability, and care satisfaction.
• Current outcome measurement lacks standardization, hindering robust clinical trials and meta-analyses.

Framework:

• A panel of international back pain researchers convened to recommend standardized outcome measures.
• Key factors for measure selection included reliability, validity, responsiveness, and practicality.
• Compatibility with existing instruments, such as the American Academy of Orthopaedic Surgeons Lumbar Cluster, was considered.

Implementation:

• A brief, six-item outcome set was proposed for routine care and quality improvement.
• An expanded set offers more precise measurement for research, including symptom severity/frequency, disability scales (Roland/Oswestry), general health status (SF-12/EuroQol), and satisfaction.
• The expanded set includes disability days and overall satisfaction with medical care.

Implications:

• Standardized outcome measurement will advance scientific understanding and clinical care for back pain.
• A short questionnaire and an expanded battery are recommended for widespread adoption.
• Further research is needed on the responsiveness and minimally important change for many proposed instruments.