"No language restrictions" in database searches: what does this really mean?

The aim of this study was to investigate the coverage of non-English journals by MEDLINE((R)) and EMBASE, the two major biomedical databases used for identifying studies for possible inclusion in systematic reviews and meta-analyses. A series of searches were conducted to compare the coverage of jou...

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Main Authors: Pilkington, K, Boshnakova, A, Clarke, M, Richardson, J
Format: Journal article
Language:English
Published: 2005
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author Pilkington, K
Boshnakova, A
Clarke, M
Richardson, J
author_facet Pilkington, K
Boshnakova, A
Clarke, M
Richardson, J
author_sort Pilkington, K
collection OXFORD
description The aim of this study was to investigate the coverage of non-English journals by MEDLINE((R)) and EMBASE, the two major biomedical databases used for identifying studies for possible inclusion in systematic reviews and meta-analyses. A series of searches were conducted to compare the coverage of journals in languages other than English. The results were compared against listings in Ulrich's Periodicals Directory, an authoritative source of information on periodicals published in more than 200 countries. This study has highlighted the existence of a database coverage bias, in terms of the systematic exclusion of journals from certain countries and/or in certain languages. Searching that relies only on English language databases may result in failure to find many relevant studies published in languages other than English, irrespective of the research question and the avoidance of any language restrictions.
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spelling oxford-uuid:292783fa-1eab-4db1-8d45-c63099ef47ae2022-03-26T12:17:25Z"No language restrictions" in database searches: what does this really mean?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:292783fa-1eab-4db1-8d45-c63099ef47aeEnglishSymplectic Elements at Oxford2005Pilkington, KBoshnakova, AClarke, MRichardson, JThe aim of this study was to investigate the coverage of non-English journals by MEDLINE((R)) and EMBASE, the two major biomedical databases used for identifying studies for possible inclusion in systematic reviews and meta-analyses. A series of searches were conducted to compare the coverage of journals in languages other than English. The results were compared against listings in Ulrich's Periodicals Directory, an authoritative source of information on periodicals published in more than 200 countries. This study has highlighted the existence of a database coverage bias, in terms of the systematic exclusion of journals from certain countries and/or in certain languages. Searching that relies only on English language databases may result in failure to find many relevant studies published in languages other than English, irrespective of the research question and the avoidance of any language restrictions.
spellingShingle Pilkington, K
Boshnakova, A
Clarke, M
Richardson, J
"No language restrictions" in database searches: what does this really mean?
title "No language restrictions" in database searches: what does this really mean?
title_full "No language restrictions" in database searches: what does this really mean?
title_fullStr "No language restrictions" in database searches: what does this really mean?
title_full_unstemmed "No language restrictions" in database searches: what does this really mean?
title_short "No language restrictions" in database searches: what does this really mean?
title_sort no language restrictions in database searches what does this really mean
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AT boshnakovaa nolanguagerestrictionsindatabasesearcheswhatdoesthisreallymean
AT clarkem nolanguagerestrictionsindatabasesearcheswhatdoesthisreallymean
AT richardsonj nolanguagerestrictionsindatabasesearcheswhatdoesthisreallymean