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<title>PubMed's Automatic Term Mapping Enhanced. NLM Technical Bulletin. 2004 Nov-Dec</title>
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<meta name="DC.Subject.Keyword" content="Abstract" />
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<meta name="DC.Subject.Keyword" content="Author Name" />
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<meta name="DC.Subject.Keyword" content="Automatic Term Mapping" />
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<meta name="DC.Subject.Keyword" content="Clinical Queries" />
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<meta name="DC.Subject.Keyword" content="Limits" />
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<meta name="DC.Subject.Keyword" content="MeSH Terms" />
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<meta name="DC.Subject.Keyword" content="Unified Medical Language System" />
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<tr><td width="30"> </td><td width="470"><font size="2"><strong>November 10, 2004</strong> [posted]</font><br />
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<font size="2"><strong>November 22, 2004</strong> [<a href="#note">note added</a>]</font></td><td width="30"> </td></tr>
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<tr><td width="30"> </td><td width="470">
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<!--************************indicate title of article below*********************-->
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<tr><td width="30"> </td><td width="470"><font size="5"><strong>PubMed's<sup>®</sup> Automatic Term Mapping Enhanced</strong></font><br /></td><td width="30"> </td></tr>
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<tr><td width="30"> </td><td width="470">
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<br />
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<em><a name = "note">[</a>Editor's Note: This enhancement was implemented on November 22, 2004.]</em>
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<p>
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<img src="/pubs/techbull/new_tb_graphics/p.gif" border="0" align="left" alt="drop cap letter for p"/>
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ubMed optimizes searches using a process known as Automatic Term Mapping (ATM). ATM compares terms from the search query with lists of terms: MeSH<sup>®</sup> (including UMLS<sup>®</sup> mappings), journal titles, and author names.</p>
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<p>If a searcher's query includes an untagged term that maps to a MeSH term, the term will be searched as the MeSH term as well as a Text Word. </p>
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<p>For example a search for hay fever translates to:</p>
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<p>"hay fever"[MeSH Terms] OR hay fever[Text Word]</p>
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<p>In order to augment PubMed retrieval with additional non-MEDLINE citations, a new translation will be implemented if the searcher enters an entry term for a MeSH heading. This translation will include a Title/Abstract search for the MeSH heading associated with the entry term that is limited to citations outside the MEDLINE subset of citations.
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</p>
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<p>For example, a search for the entry term Odontalgia will soon translate as:</p>
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<p>("toothache"[TIAB] NOT Medline[SB]) OR "toothache"[MeSH Terms] OR odontalgia[Text Word]</p>
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<p>Inverted MeSH entry terms search in the Title/Abstract field in a reversed form without commas as the direct phrase is more likely to be found that way in a citation.</p>
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<p>For example, a search for viral arthritis will soon map as:</p>
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<p>("infectious arthritis"[TIAB] NOT Medline[SB]) OR "arthritis, infectious"[MeSH Terms] OR viral arthritis[Text Word]</p>
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<p>The new translation will retrieve additional citations in PubMed that have not been indexed for MEDLINE, e.g., in-process and OLDMEDLINE (see <a href="#fig1">Figure 1</a>): </p>
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<table border="2" width="450" cellpadding="5" align="center">
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<tr>
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<td>
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1:<br />
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Gherunpong S, Tsakos G, Sheiham A. <br />
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The prevalence and severity of oral impacts on daily performances in Thai
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primary school children.<br />
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Health Qual Life Outcomes. 2004 Oct 12;2(1):57 [Epub ahead of print] <br />
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PMID: 15476561 [PubMed - as supplied by publisher]
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<br /><br />
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2:<br />
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Versloot J, Veerkamp JS, Hoogstraten J. <br />
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Dental Discomfort Questionnaire: predicting toothache in preverbal children.<br />
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Eur J Paediatr Dent. 2004 Sep;5(3):170-3. <br />
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PMID: 15471526 [PubMed - in process]
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<br /><br />
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3: <br />
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Riley JL 3rd, Gilbert GH. <br />
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Racial differences in orofacial pain.<br />
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J Pain. 2002 Aug;3(4):284-91. <br />
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PMID: 14622752 [PubMed]
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<br /><br />
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4: <br />
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JACOBSON S. <br />
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DIAGNOSIS OF TOOTHACHE.<br />
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Dent Surv. 1965 Jan;41:54-5. No abstract available. <br />
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PMID: 14240812 [PubMed - OLDMEDLINE for Pre1966]
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</td>
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</tr>
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<tr><td><strong>Figure 1: Additional citations retrieved for odontalgia using new translation search.</strong></td></tr>
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</table>
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<p>Please note: Often, searchers utilize options from the Limits screen that add tagged terms to their strategies, e.g., "humans"[MeSH Terms]. Or, they incorporate tagged terms into their searches with a Boolean AND, e.g., asthma AND humans [mh]. Others may use the Clinical Queries. Even though these examples do not use a specific limit for the MEDLINE subset, they are self-limiting to the MEDLINE subset because they require that the retrieved citations carry a term that is found only on citations in MEDLINE, e.g., MeSH headings, Publication Types. Any search that is self-limiting to the MEDLINE subset will not retrieve additional citations made possible by this change to ATM as it is intended to supplement retrieval with items not in MEDLINE. </p>
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<p>For more information about Automatic Term Mapping, see PubMed's <a href="http://www.ncbi.nlm.nih.gov/books/NBK3830/">Help</a>. For a review of PubMed coverage, see the PubMed <a href="http://www.ncbi.nlm.nih.gov/books/NBK3827/#pubmedhelp.PubMed_Coverage">Overview, under "PubMed comprises"</a>.</p>
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<p><strong>Indexing Terms</strong></p>
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<p>PubMed. Automatic Term Mapping Enhanced.</p>
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<p>Automatic Term Mapping. Enhanced.</p>
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-->
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<em>PubMed's Automatic Term Mapping Enhanced. NLM Tech Bull. 2004 Nov-Dec;(341):e7.</em>
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