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Study Design.

Literature review, expert panel, and a workshop during the “VIII International Forum on Primary Care Research on Low Back Pain”(Amsterdam, June 2006).

Objective.

To develop practical guidance regarding the minimal important change (MIC) on frequently used measures of pain and functional status for low back pain.

Summary of Background Data.

Empirical studies have tried to determine meaningful changes for back pain, using different methodologies. This has led to confusion about what change is clinically important for commonly used back pain outcome measures.

Methods.

This study covered the Visual Analogue Scale (0–100) and the Numerical Rating Scale (0–10) for pain and for function, the Roland Disability Questionnaire (0–24), the Oswestry Disability Index (0–100), and the Quebec Back Pain Disability Questionnaire (0–100). The literature was reviewed for empirical evidence …