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Related Experiment Videos

The Quebec Back Pain Disability Scale. Measurement properties

J A Kopec1, J M Esdaile, M Abrahamowicz

  • 1Department of Epidemiology and Biostatistics, Montreal General Hospital, McGill University, Canada.

Spine
|February 1, 1995
PubMed
Summary

The Quebec Back Pain Disability Scale demonstrates high reliability and validity for assessing back pain functional disability. It is recommended for clinical trials and patient progress monitoring.

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Area of Science:

  • Orthopedics
  • Rehabilitation Medicine
  • Pain Management

Background:

  • Existing back pain disability scales lack clear conceptual validity.
  • The Quebec scale was developed using a rigorous conceptual and empirical approach.

Purpose of the Study:

  • To assess the reliability, validity, and responsiveness of the Quebec Back Pain Disability Scale.
  • To compare the Quebec scale with other established disability measures.

Main Methods:

  • Administered the 20-item Quebec scale to 242 back pain patients.
  • Conducted test-retest and internal consistency analyses.
  • Evaluated construct validity and responsiveness to change.

Main Results:

  • Achieved high test-retest reliability (0.92) and internal consistency (Cronbach's alpha 0.96).

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  • Demonstrated expected correlations with other disability, pain, and utilization measures.
  • Showed significant changes in disability over time, confirming responsiveness.

    • Conclusions:

    • The Quebec scale is a reliable and valid measure for back pain disability.
    • Recommended for use in clinical trials and patient monitoring in rehabilitation programs.