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The Barcelona Orthorexia Scale (BOS): development process using the Delphi method.

Stefan M Bauer1, Adela Fusté1, Ana Andrés2

  • 1Department of Clinical Psychology and Psychobiology, Universitat de Barcelona, P. Vall d'Hebron, 171, 08035, Barcelona, Spain.

Eating and Weight Disorders : EWD
|August 5, 2018
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Summary
This summary is machine-generated.

Experts developed the Barcelona Orthorexia Scale (BOS), a new questionnaire to assess psychological features of orthorexia nervosa. This tool aims to support research into this eating disorder by providing valid evaluation instruments.

Keywords:
BOSContent validityDelphiExpert consensusOrthorexia

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Eating Disorders

Background:

  • Orthorexia nervosa is an emerging eating disorder characterized by an unhealthy obsession with healthy eating.
  • Existing assessment tools for orthorexia nervosa's psychological dimensions are limited.

Purpose of the Study:

  • To develop core items for a new questionnaire, the Barcelona Orthorexia Scale (BOS).
  • To evaluate key psychological features of orthorexia nervosa.
  • To create versions in both English and Spanish.

Main Methods:

  • A three-round Delphi study involving experts in orthorexia and eating disorders.
  • Experts evaluated and refined an initial pool of 105 items across six content areas.
  • Statistical analysis and expert recommendations guided item modification and selection.

Main Results:

  • The study resulted in a 64-item questionnaire, with parallel English and Spanish versions.
  • Expert consensus was achieved through iterative refinement of items.
  • Participant feedback and statistical analysis informed item changes.

Conclusions:

  • The Barcelona Orthorexia Scale (BOS) is proposed as a potential solution to the lack of valid assessment instruments for orthorexia nervosa.
  • The BOS aims to facilitate further research into the psychological aspects of orthorexia nervosa.
  • Subsequent studies are required to establish the validity and reliability of the BOS.