Anecdotes that provide definitive evidence

Many adverse drug reactions are first reported anecdotally. Anecdotal reports, by which we mean either individual cases or small case series, are generally regarded as providing poor quality evidence. They therefore usually require formal verification through robust epidemiological studies or clinic...

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Main Authors: Aronson, J, Hauben, M
Format: Journal article
Language:English
Published: 2006
Subjects:
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author Aronson, J
Hauben, M
author_facet Aronson, J
Hauben, M
author_sort Aronson, J
collection OXFORD
description Many adverse drug reactions are first reported anecdotally. Anecdotal reports, by which we mean either individual cases or small case series, are generally regarded as providing poor quality evidence. They therefore usually require formal verification through robust epidemiological studies or clinical trials, although a minority are actually verified. However, we propose that some adverse drug reactions are so convincing, even without traditional chronological causal criteria such as challenge tests, that a well documented anecdotal report can provide convincing evidence of causal association and further verification is not needed. Such reactions could serve as gold standards for use, for example, when validating pharmacovigilance systems or assessing the quality of systematic reviews of adverse drug reactions and the methods used to perform them. Specificity of an adverse drug reaction has previously been discussed as a concept but to our knowledge has never been fully developed.
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spelling oxford-uuid:dde0582a-6622-4dfa-a437-1acd4287f83d2022-03-27T09:28:02ZAnecdotes that provide definitive evidenceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:dde0582a-6622-4dfa-a437-1acd4287f83dPharmacologyEnglishOxford University Research Archive - Valet2006Aronson, JHauben, MMany adverse drug reactions are first reported anecdotally. Anecdotal reports, by which we mean either individual cases or small case series, are generally regarded as providing poor quality evidence. They therefore usually require formal verification through robust epidemiological studies or clinical trials, although a minority are actually verified. However, we propose that some adverse drug reactions are so convincing, even without traditional chronological causal criteria such as challenge tests, that a well documented anecdotal report can provide convincing evidence of causal association and further verification is not needed. Such reactions could serve as gold standards for use, for example, when validating pharmacovigilance systems or assessing the quality of systematic reviews of adverse drug reactions and the methods used to perform them. Specificity of an adverse drug reaction has previously been discussed as a concept but to our knowledge has never been fully developed.
spellingShingle Pharmacology
Aronson, J
Hauben, M
Anecdotes that provide definitive evidence
title Anecdotes that provide definitive evidence
title_full Anecdotes that provide definitive evidence
title_fullStr Anecdotes that provide definitive evidence
title_full_unstemmed Anecdotes that provide definitive evidence
title_short Anecdotes that provide definitive evidence
title_sort anecdotes that provide definitive evidence
topic Pharmacology
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AT haubenm anecdotesthatprovidedefinitiveevidence