ランダム化試験における複合結果:より高い精度,しかしより大きな不確実性?
Nick Freemantle1, Melanie Calvert, John Wood
1Department of Primary Care and General Practice, University of Birmingham, Birmingham, England. N.Freemantle@bham.ac.uk
JAMA
|May 22, 2003
まとめ
臨床試験における複合的なアウトカムは統計的効率を高めますが,解釈の課題を提起します. 報告はしばしば不十分であり,全体的な複合比と比較して個々のコンポーネントの結果をより明確にするために,改訂されたガイドラインを必要とします.
科学分野:
- 臨床試験の方法論 臨床試験の方法論
- バイオ統計学 バイオ統計学
- 医学研究 報告 報告する
背景:
- 複合的アウトカムは,統計的効率を高めるために,ランダム化試験で頻繁に使用されます.
- 複合的なアウトカムの結果の結果を解釈するにあたって,課題が存在します.
- この研究は,主要な医学雑誌における複合結果の適用と報告を扱っています.
研究 の 目的:
- 高インパクトの臨床試験における複合結果の発生率と報告の質を体系的に検討する.
- 複合的な結果の使用の賛成・反対の議論を評価する.
- 複合的な結果の適用と報告に関するガイドラインを提供すること.
主な方法:
- 1997年から2001年の間に9つの主要な医学雑誌に掲載されたランダム化試験の体系的レビュー.
- すべての原因による死亡率を含む複合的なプライマリアウトカムを持つ試験を含む.
- 3万276人の患者を対象とした167件の試験の分析.
主要な成果:
- 試験の38%は,複合的な結果と死亡率の両方に対して中立であった.
- 36%が複合体の有意性を示したが,死亡率は示されなかった.
- 13%の試験は不十分に報告されており,結果が全体的な複合体よりも個々の成分に適用される可能性があることを示唆しています.
結論:
- 臨床試験における複合結果の報告は,しばしば不十分である.
- 現在のガイドラインは,複合的なアウトカムの一般的な使用と解釈に対処するために改訂する必要があるかもしれません.
- 改善された報告は,特に個々の成分に関する試験結果の正確な理解に不可欠です.
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