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The reliability of reliability.

M Haas1

  • 1Research Department, Western States Chiropractic College, Portland, Oregon 97230.

Journal of Manipulative and Physiological Therapeutics
|March 1, 1991
PubMed
Summary
This summary is machine-generated.

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Chiropractic research on examiner reliability is often flawed. Most studies lack adequate statistical analysis and sound experimental design, failing to support claims about diagnostic tools.

Area of Science:

  • Chiropractic research
  • Medical statistics
  • Research methodology

Background:

  • Chiropractic physicians rely on diagnostic instrumentation and palpatory procedures.
  • Claims regarding the reliability of these methods are prevalent in chiropractic literature.
  • Independent assessment of the scientific rigor supporting these claims is warranted.

Purpose of the Study:

  • To critically evaluate the scientific validity of studies investigating examiner reliability in chiropractic.
  • To determine if statistical analyses and experimental designs adequately support the conclusions presented in the chiropractic literature.

Main Methods:

  • A systematic review of 45 original articles on examiner reliability in chiropractic was conducted.
  • Studies were assessed for the adequacy of their statistical analyses and experimental designs.

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  • Conclusions were evaluated for substantiation by the presented data and methodology.

    • Main Results:

    • Only 10 out of 45 studies (22%) had adequately supported conclusions.
    • Three studies (7%) reached correct conclusions coincidentally.
    • Eight studies (18%) featured invalid designs, and three (7%) had contradicted findings. Approximately 50% of studies employed inappropriate or inconclusive statistical analysis.

    Conclusions:

    • The current body of chiropractic research is insufficient to substantiate claims regarding the reliability of diagnostic instrumentation.
    • Evidence does not support the reliability of commonly used palpatory procedures in chiropractic practice.
    • Significant improvements in research methodology and statistical analysis are needed within the chiropractic field.