Health / Medical Topics |
Level of Evidence V
Opinion of respected authorities based on clinical experience, descriptive studies, or reports of expert committees. (NCI Thesaurus)
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Opinions of respected authorities based on clinical experience, consensus statements from expert committees, or authoritative reviews.
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Prospective, nonrandomized, controlled trials; prospective cohort studies; prospective case series; and cross-sectional studies.
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Prospective, randomized, controlled trials and meta-analyses of prospective, randomized, controlled trials.
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Randomized, controlled clinical trial with total mortality as an endpoint.
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A formal ranking system of the strength of evidence linked to a reported result.
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