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Measuring health: guidelines for reliability assessment.

D S Main1, W D Pace

  • 1Department of Family Medicine, University of Colorado Health Sciences Center, Denver 80220.

Family Medicine
|March 1, 1991
PubMed
Summary

This article explains reliability in health measurement, offering methods to assess health assessment instruments. It provides practical guidance for creating and using reliable questionnaires in research and clinical settings.

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Area of Science:

  • Health Measurement
  • Psychometrics
  • Biostatistics

Background:

  • Limited guidelines exist for health professionals on understanding and applying reliability in health measurement.
  • There is a frequent need to develop, adapt, or choose reliable instruments for research or clinical purposes.

Purpose of the Study:

  • To review the concept of reliability in health assessment.
  • To present common techniques for calculating the reliability of health assessment instruments.
  • To offer practical guidelines for questionnaire construction and administration.

Main Methods:

  • Literature review of reliability concepts.
  • Description of common reliability calculation techniques (e.g., test-retest, internal consistency).
  • Discussion of practical aspects of questionnaire design and implementation.

Main Results:

  • Reliability is a crucial concept in health measurement, ensuring consistency and accuracy of instruments.
  • Various statistical methods can quantify the reliability of health assessment tools.
  • Effective questionnaire construction and administration are vital for achieving reliable results.

Conclusions:

  • Understanding and applying reliability principles is essential for health professionals.
  • The article provides a foundational understanding and practical tools for assessing and improving the reliability of health assessment instruments.
  • Adherence to guidelines enhances the validity and utility of health measurements in diverse settings.

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