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Related Experiment Video

Updated: Jan 11, 2026

Author Spotlight: Fu's Subcutaneous Needling for Knee Osteoarthritis Pain
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Health State Utility Values Associated with Knee Osteoarthritis: A Vignette-Based Approach.

Juan M Ramos-Goñi1,2, Mathieu F Janssen1, Magaly Perez-Nieves3

  • 1Maths in Health, Klimmen, Limburg, the Netherlands.

Patient Preference and Adherence
|November 12, 2025
PubMed
Summary

This study estimated health state utility values (HSUVs) for knee osteoarthritis (KOA) pain. Severe KOA pain significantly reduces quality of life, with HSUVs dropping from 0.983 to 0.305.

Keywords:
knee osteoarthritisoverweight/obesitypaintime-trade-offvignettes

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Area of Science:

  • Health Economics
  • Rheumatology
  • Quality of Life Research

Background:

  • Osteoarthritis (OA) is a leading cause of disability, with pain significantly impacting health-related quality of life (HRQoL).
  • Knee Osteoarthritis (KOA) pain is a primary symptom, often leading to mobility dependence.
  • Quantifying the impact of KOA pain on HRQoL is crucial for healthcare economic evaluations.

Purpose of the Study:

  • To estimate health state utility values (HSUVs) associated with varying pain levels in Knee Osteoarthritis (KOA).
  • To understand the relationship between pain severity and utility decrements in KOA patients.
  • To provide data for economic modeling of KOA interventions.

Main Methods:

  • Developed six health state vignettes based on real-world data from the Osteoarthritis Initiative (OAI) database.
  • Categorized KOA pain profiles using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain items.
  • Conducted a time trade-off study with 198 individuals diagnosed with KOA in the UK.

Main Results:

  • Mean HSUVs ranged from 0.983 (mild pain, e.g., slight pain climbing stairs) to 0.305 (extreme pain across all assessed activities).
  • A clear gradient was observed, with increasing pain severity correlating with lower HSUVs.
  • The findings highlight a substantial HRQoL burden associated with KOA pain.

Conclusions:

  • This study provides the first known HSUVs specifically for commonly reported pain levels in KOA.
  • The estimated HSUVs demonstrate the significant negative impact of KOA pain on patient HRQoL.
  • These values are essential for accurately assessing the cost-effectiveness of treatments for KOA.