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Defining patient-reported outcomes.

Lynda C Doward1, Stephen P McKenna

  • 1Galen Research, Manchester, UK. ldoward@galen-research.com

Value in Health : the Journal of the International Society for Pharmacoeconomics and Outcomes Research
|September 16, 2004
PubMed
Summary

This study differentiates quality of life (QoL) from Health-Related Quality of Life (HRQL) in clinical research. It proposes a needs-based QoL approach as a key indicator for patient outcomes.

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Area of Science:

  • Clinical Research Methodology
  • Patient-Reported Outcomes (PROs)
  • Health Outcomes Measurement

Background:

  • Clinical studies collect various patient-reported outcomes (PROs).
  • Distinguishing between different PRO types is crucial for accurate data interpretation.
  • Existing frameworks may not fully capture the patient's holistic experience.

Purpose of the Study:

  • To define and differentiate key types of patient-reported outcomes.
  • To distinguish Quality of Life (QoL) from Health-Related Quality of Life (HRQL).
  • To introduce and validate a needs-based QoL approach.

Main Methods:

  • Conceptual analysis and definition of PRO categories.
  • Comparative analysis of QoL and HRQL definitions.
  • Development and proposal of a needs-based QoL framework.

Main Results:

  • Quality of Life (QoL) is defined as an overall patient assessment of illness and treatment impact.
  • Health-Related Quality of Life (HRQL) is defined as clinically relevant issues, irrespective of patient concern.
  • A needs-based QoL approach, focusing on meeting individual needs, is proposed as a robust indicator.

Conclusions:

  • QoL and HRQL are distinct concepts requiring separate measurement in clinical studies.
  • The proposed needs-based QoL offers a practical and sensitive measure of overall patient well-being.
  • Clear definitions enhance the validity and interpretability of patient-reported outcomes in research.

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