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A hierarchy of evidence (or levels of evidence) is a heuristic used to rank the relative strength of results obtained from scientific research. There is broad agreement on the relative strength of large-scale, epidemiological studies. More than 80 different hierarchies have been proposed for assessing medical evidence. The design of the study (such as a case report for an individual patient or a blinded randomized controlled trial) and the endpoints measured (such as survival or quality of life) affect the strength of the evidence. In clinical research, the best evidence for treatment efficacy is mainly from meta-analyses of randomized controlled trials (RCTs). Systematic reviews of completed, high-quality randomized controlled trials – such as those published by the Cochrane Collaboration

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  • A hierarchy of evidence (or levels of evidence) is a heuristic used to rank the relative strength of results obtained from scientific research. There is broad agreement on the relative strength of large-scale, epidemiological studies. More than 80 different hierarchies have been proposed for assessing medical evidence. The design of the study (such as a case report for an individual patient or a blinded randomized controlled trial) and the endpoints measured (such as survival or quality of life) affect the strength of the evidence. In clinical research, the best evidence for treatment efficacy is mainly from meta-analyses of randomized controlled trials (RCTs). Systematic reviews of completed, high-quality randomized controlled trials – such as those published by the Cochrane Collaboration rank the same as systematic review of completed high-quality observational studies in regard to the study of side effects. Evidence hierarchies are often applied in evidence-based practices and are integral to evidence-based medicine (EBM). (en)
  • Evidenshierarkier reflekterar den relativa auktoriteten av olika typer av biomedicinska studier som framställer evidensgrad, eller åtminstone olika grader av metoder som producerar evidens. Det finns en omfattande överenskommelse kring den relativa styrkan av de epidemiologiska studiernas huvudtyper, men ändå existerar ingen evidenshierkarki som är universellt accepterad. Fler än 80 olika hierarkier har föreslagits för utvärderingen av medicinsk evidens. Vanligtvis ges randomiserade kontrollerade studier (förkortat "RCT" efter engelskans randomized controlled trial) en högre rang än medan expertutlåtanden och anekdoter normalt sett placeras vid botten av dessa hierarkier. En del evidenshierarkier placerar systematiska översikter och metaanalyser ovanför RCT:er. Evidenshierarkier är väsentliga för evidensbaserad medicin (EBM). (sv)
  • Иерархия доказательств отражает относительное качество (надежность получаемых данных при их проведении) различных видов биомедицинских исследований экспериментальной медицины, которое выражается в . (ru)
  • 證據等級,或稱證據金字塔(英語:levels of evidence,常以縮寫LOE代表;或 英語:hierarchy of evidence),係指以啟發法為科學研究結果的相對強度來進行排名。針對大型流行病學研究的相對強度排名已廣獲普遍認可;目前用以評估醫學所提出的等級,已超過80種以上。研究的設計方法和及試驗指標也會影響證據強度;前者例如特定病人的或依盲法進行的隨機對照試驗,後者例如存活率或生活品質。臨床研究中,治療效能的最佳證據,主要就是基於統整有多篇隨機對照實驗的統合分析。統合了高品質的完整隨機對照試驗之系統性回顧,和囊括了治療副作用的高品質完整觀察型研究之系統性回顧,二者相較的話,其等級可評估為相同重要。前者的例子即為考科藍實證醫學資料庫所發表的文章。實證應用中經常應用證據等級,並將其整合至實證醫學之中。 (zh)
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  • State University of New York (en)
  • Canadian Association of Pharmacy in Oncology (en)
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  • Example hierarchies of evidence in medicine. (en)
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  • Research design and evidence.svg (en)
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  • Иерархия доказательств отражает относительное качество (надежность получаемых данных при их проведении) различных видов биомедицинских исследований экспериментальной медицины, которое выражается в . (ru)
  • 證據等級,或稱證據金字塔(英語:levels of evidence,常以縮寫LOE代表;或 英語:hierarchy of evidence),係指以啟發法為科學研究結果的相對強度來進行排名。針對大型流行病學研究的相對強度排名已廣獲普遍認可;目前用以評估醫學所提出的等級,已超過80種以上。研究的設計方法和及試驗指標也會影響證據強度;前者例如特定病人的或依盲法進行的隨機對照試驗,後者例如存活率或生活品質。臨床研究中,治療效能的最佳證據,主要就是基於統整有多篇隨機對照實驗的統合分析。統合了高品質的完整隨機對照試驗之系統性回顧,和囊括了治療副作用的高品質完整觀察型研究之系統性回顧,二者相較的話,其等級可評估為相同重要。前者的例子即為考科藍實證醫學資料庫所發表的文章。實證應用中經常應用證據等級,並將其整合至實證醫學之中。 (zh)
  • A hierarchy of evidence (or levels of evidence) is a heuristic used to rank the relative strength of results obtained from scientific research. There is broad agreement on the relative strength of large-scale, epidemiological studies. More than 80 different hierarchies have been proposed for assessing medical evidence. The design of the study (such as a case report for an individual patient or a blinded randomized controlled trial) and the endpoints measured (such as survival or quality of life) affect the strength of the evidence. In clinical research, the best evidence for treatment efficacy is mainly from meta-analyses of randomized controlled trials (RCTs). Systematic reviews of completed, high-quality randomized controlled trials – such as those published by the Cochrane Collaboration (en)
  • Evidenshierarkier reflekterar den relativa auktoriteten av olika typer av biomedicinska studier som framställer evidensgrad, eller åtminstone olika grader av metoder som producerar evidens. Det finns en omfattande överenskommelse kring den relativa styrkan av de epidemiologiska studiernas huvudtyper, men ändå existerar ingen evidenshierkarki som är universellt accepterad. Fler än 80 olika hierarkier har föreslagits för utvärderingen av medicinsk evidens. Vanligtvis ges randomiserade kontrollerade studier (förkortat "RCT" efter engelskans randomized controlled trial) en högre rang än medan expertutlåtanden och anekdoter normalt sett placeras vid botten av dessa hierarkier. En del evidenshierarkier placerar systematiska översikter och metaanalyser ovanför RCT:er. (sv)
rdfs:label
  • Hierarchy of evidence (en)
  • Иерархия доказательств (ru)
  • Evidenshierarki (sv)
  • 證據等級 (zh)
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