頸動脈末関節切除術は費用対効果はあるのか? 症状と無症状の患者の分析
1Section for Clinical Epidemiology, Brigham and Women's Hospital, Boston, MA 02115, USA. keaney@hsph.harvard.edu
Circulation
|November 1, 1996
まとめ
頸動脈末関節切除術 (CE) は,症状のある患者にとって有利な費用対効果を提供します. 無症状患者の場合,費用対効果は異なるため,手術のリスクと費用を慎重に考慮する必要性を強調しています.
科学分野:
- 血管外科 血管外科
- 健康経済学 医療経済学
- 臨床的意思決定 臨床的意思決定
背景:
- NASCETやACASなどの以前の試験では,脳卒中のリスクを低減するCEの有効性が示されました.
- しかし,これらの画期的な研究は,CEの経済的影響を評価しなかった.
研究 の 目的:
- 医学的治療と比較して,大動脈末関節切除術 (CE) の費用対効果を評価する.
- 頸動脈狭窄症の症状と無症状の両方の患者に対するCEの経済的価値を分析する.
主な方法:
- マルコフモデルは,NASCETとACASの試験データに基づいて開発されました.
- 品質調整された平均寿命と直接的な医療費は,CEと医療療法との比較で計算されました.
- 重要なパラメータには,手術による脳卒中リスク,医療療法による脳卒中リスク,手術後のリスク軽減が含まれていました.
主要な成果:
- 症状のある患者の場合,インクリメンタル費用対効果比 (ICER) は,獲得したQALYあたり4100ドルで,QALYあたり5万ドル以下でした.
- 症状のない患者の場合,ICERは獲得したQALYあたり52700ドルだったが,手術後のリスクや治療費などのパラメータに敏感であった.
- 仮定の変動は,特定の条件下で無症状患者の場合,潜在的ICERが$50000/QALY以下であることを示しました.
結論:
- 頸動脈末関節切除術 (CE) は,他の医療介入と比較して有利な費用対効果を示しています.
- 無症状患者のCEの経済的利益は,手術後のリスクとコストの仮定に敏感であり,個別的な評価を必要とします.
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