3. Scores and Measurements: Validity, Reliability, Sensitivity

  1. Peter M. Fayers1,2 and
  2. David Machin3,4

Published Online: 8 MAR 2002

DOI: 10.1002/0470846283.ch3

Quality of Life: Assessment, Analysis and Interpretation

Quality of Life: Assessment, Analysis and Interpretation

How to Cite

Fayers, P. M. and Machin, D. (2000) Scores and Measurements: Validity, Reliability, Sensitivity, in Quality of Life: Assessment, Analysis and Interpretation, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/0470846283.ch3

Author Information

  1. 1

    Medical Research Council Clinical Trials Unit, London, UK

  2. 2

    Unit of Applied Clinical Research, Norwegian University of Science and Technology, Trondheim, Norway

  3. 3

    NMRC Clinical Trials & Epidemiology Research Unit, Singapore

  4. 4

    School of Health and Related Research, University of Sheffield, UK

Publication History

  1. Published Online: 8 MAR 2002
  2. Published Print: 18 APR 2000

ISBN Information

Print ISBN: 9780471968610

Online ISBN: 9780470846285

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Keywords:

  • content validity;
  • criterion validity;
  • construct validity;
  • binary data;
  • known-groups validation;
  • convergent validity;
  • discriminant validity;
  • multitrait-multimethod analysis

Summary

Properties that are common to all forms of measurements are explored. This includes both single-item measurements, such as the response to a single global question, and summary scores derived from multi-item scales, such as the scores from the summated scales that are used in many QoL instruments. These properties include validity, reliability, sensitivity and responsiveness. This chapter focuses upon those aspects of the properties that apply to single items and summary scales scores.