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Intervention thresholds for osteoporosis.

J A Kanis1, O Johnell, A Oden

  • 1Centre for Metabolic Bone Diseases (WHO Collaborating Centre), University of Sheffield Medical School, Sheffield, UK.

Bone
|July 12, 2002
PubMed
Summary
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Osteoporotic fracture interventions are cost-effective for women aged 65 and older. Including all fracture types, not just hip fractures, significantly impacts cost-effectiveness thresholds for osteoporosis treatment.

Area of Science:

  • Health Economics
  • Osteoporosis Research
  • Pharmacoeconomics

Background:

  • Osteoporotic fractures pose a significant health burden, necessitating cost-effective prevention strategies.
  • Determining the optimal threshold for intervention is crucial for resource allocation in healthcare.

Purpose of the Study:

  • To identify the fracture probability threshold at which osteoporosis interventions become cost-effective.
  • To model the economic impact of a 5-year osteoporosis treatment with varying effectiveness and costs.

Main Methods:

  • Cost-effectiveness analysis using a threshold of $60,000 per quality-adjusted life-year (QALY) gained.
  • Modeling treatment effects, including a 35% risk reduction and waning efficacy over time.
  • Sensitivity analyses incorporating a range of treatment efficacies (10%-50%) and costs ($200-$500/year).

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Main Results:

  • In the base case, intervention was cost-effective for women aged 65+ at average risk.
  • Cost-effectiveness was achieved at lower ages with decreased intervention costs and increased efficacy.
  • Excluding non-hip osteoporotic fractures increased the 10-year hip fracture probability threshold from 1.4%-4.4% to 9%-11%.

Conclusions:

  • The inclusion of all osteoporotic fractures significantly influences intervention cost-effectiveness thresholds.
  • Intervention thresholds for osteoporosis treatment vary with age and fracture probability.
  • Current osteoporosis treatments can be cost-effectively targeted to individuals with moderately increased fracture risk.