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Related Experiment Video

Updated: Oct 27, 2025

Murine Excisional Wound Healing Model and Histological Morphometric Wound Analysis
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Determining the Minimal Important Difference for the Wound-QoL Questionnaire.

Janine Topp1, Christine Blome1, Matthias Augustin1

  • 1Institute for Health Services Research in Dermatology and Nursing (IVDP), German Center for Health Services Research in Dermatology (CVderm), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.

Patient Preference and Adherence
|July 21, 2021
PubMed
Summary

This study determined the minimal important difference (MID) for the Wound-Quality of Life (Wound-QoL) questionnaire. An estimated MID of 0.50 for the global score helps interpret meaningful changes in chronic wound patient quality of life.

Keywords:
MIDchronic woundshealth-related quality of lifeminimal important difference

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Area of Science:

  • Health Outcomes Research
  • Patient-Reported Outcomes
  • Chronic Wound Care

Background:

  • The Wound-Quality of Life (Wound-QoL) questionnaire assesses health-related quality of life (HRQoL) in chronic wound patients.
  • Interpreting HRQoL score changes requires understanding the minimal important difference (MID).
  • MID signifies a change in HRQoL a patient deems meaningful and indicative of beneficial treatment.

Purpose of the Study:

  • To estimate the MID for the Wound-QoL global score and its subscales.
  • To provide a benchmark for interpreting clinically relevant changes in wound-specific quality of life.

Main Methods:

  • Patients (N=227) completed the Wound-QoL pre- and post-treatment (4-6 weeks).
  • A global rating of change served as an anchor question.
  • MIDs were calculated using anchor-based and distribution-based methods.

Main Results:

  • The study included 227 patients (mean age 66.9 years, 51.5% female).
  • MIDs for the Wound-QoL global score ranged from 0.47 to 0.52.
  • An overall estimation of 0.50 was proposed for the MID of the global score.

Conclusions:

  • The estimated MID values aid in measuring and interpreting changes in wound-specific quality of life.
  • These findings enhance the clinical utility of the Wound-QoL questionnaire for tracking patient progress.