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Related Experiment Videos

Development and initial validation of the back pain functional scale.

P W Stratford1, J M Binkley, D L Riddle

  • 1School of Rehabilitation Science and Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada.

Spine
|August 23, 2000
PubMed
Summary
This summary is machine-generated.

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The Back Pain Functional Scale (BPFS) shows strong measurement properties for assessing low back pain. A head-to-head comparison with the Roland-Morris Questionnaire (RMQ) is recommended for future research.

Area of Science:

  • Orthopedics
  • Rehabilitation Medicine
  • Health Outcomes Research

Background:

  • Existing functional status measures for low back pain often focus on group data, not individual patient assessment.
  • Limited formal comparisons exist between the numerous available measurement tools.
  • There is a need to validate and compare instruments for individual patient evaluation.

Purpose of the Study:

  • To evaluate the measurement properties of the Back Pain Functional Scale (BPFS) and the Roland-Morris Questionnaire (RMQ).
  • To establish hypotheses and sample size for a future comparative study of these low back pain measures.

Main Methods:

  • A prospective, repeated-measures design was employed.
  • 77 patients with low back pain were recruited from outpatient physical therapy clinics in Canada and the US.

Related Experiment Videos

  • Reliability, cross-sectional validity, and longitudinal validity (sensitivity to change) were assessed over 3 weeks.

    • Main Results:

    • The BPFS demonstrated higher test-retest reliability (0.88) than the RMQ (0.81).
    • Both scales showed similar cross-sectional validity, with correlations of 0.65 (BPFS) and 0.56 (RMQ) with prognostic ratings of change.
    • The RMQ exhibited a ceiling effect, suggesting potential limitations in detecting change.

    Conclusions:

    • The Back Pain Functional Scale (BPFS) exhibits robust measurement characteristics.
    • A direct comparative study between the BPFS and RMQ is justified and recommended.