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The EQ-5D-5L valuation study in Nigeria.

Abdulrasheed Hassan Yusuf1,2, Bello Usman Ardo1,2, Montarat Thavorncharoensap3,4

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Summary

Nigeria now has its first EQ-5D-5L value set, crucial for health technology assessment and resource allocation. This tool reflects national preferences to improve healthcare policy and advance Universal Health Coverage.

Keywords:
EQ-5DHealth technology assessmentNigeriaValuation studyValue set

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Area of Science:

  • Health Economics
  • Outcome Research
  • Public Health

Background:

  • Country-specific EQ-5D-5L value sets are essential for accurate health utility estimates.
  • These estimates are vital for contextually appropriate health technology assessment (HTA) and efficient resource allocation.
  • Nigeria previously lacked a national EQ-5D-5L value set.

Purpose of the Study:

  • To develop the first EQ-5D-5L value set for Nigeria.
  • To ensure health utility estimates align with Nigerian population preferences.
  • To support evidence-based decision-making in healthcare.

Main Methods:

  • Recruited 1,200 adult Nigerians across 12 states using multi-stage stratified quota sampling.
  • Conducted face-to-face interviews using Computer-Assisted Personal Interviews and the EQ-5D-5L Value Set User Guide protocol.
  • Employed composite time-trade-off (cTTO) and discrete choice experiment (DCE) tasks, analyzing data with hybrid Tobit models.

Main Results:

  • The preferred model was a hybrid Tobit model with intercept, corrected for heteroscedasticity.
  • Utility values for the best and worst health states were 1 and -0.733, respectively.
  • Pain/Discomfort was the most significant dimension, followed by Anxiety/Depression, Mobility, Usual Activity, and Self-care.

Conclusions:

  • This study successfully developed Nigeria's first EQ-5D-5L value set from a representative adult population.
  • The value set provides a robust foundation for health technology assessment in Nigeria.
  • This contributes to informed policy decisions and progress toward Universal Health Coverage (UHC) in Nigeria and West Africa.