Technical Notes - e1 NLM Classification, 5th Edition Additions and Changes List 4 - e2 PubMed: Searching Using Subsets - e3 OLDMEDLINE Database Moves Back in Time - e4 MEDLINEplus - e6 |
PubMed: Searching Using SubsetsSubsets allow searchers to limit their search to a particular portion of the PubMed database. This article discusses two existing categories of subsets and the associated subset tags to be used in searching. The two subset categories currently available are: processing status subsets and a subject subset for AIDS. Processing status tags are used to indicate the status of those citations that are not indexed with MeSH headings and that have not been through quality control procedures. Subsets based on journal title lists will also be available in the future and are highlighted at the end of this article.
Citation Status Subsets The records that are electronically supplied by the publisher have had the least scrutiny and the data are made available as supplied and without revision. The majority of these publisher-supplied electronic records quickly convert to PREMEDLINE and eventually MEDLINE records. The remainder of the publisher-supplied citations are the out-of-scope articles from selectively indexed journals and permanently retain the [Record as supplied by publisher] tag. As a result, your search retrieval may include PUBLISHER-supplied citations, indicated by the tag, [Record as supplied by publisher], PREMEDLINE citations indicated by the tag, [MEDLINE record in process], or MEDLINE citations (no tag). These three subsets that denote citation processing status are mutually exclusive. These tags display in different locations depending on the PubMed display format you are viewing; however, the processing tags are easily seen in all displays.
Subsets for Subjects The new PubMed subsets currently available are:
In the future PubMed will provide an easier way to limit by subset, with the ability to select these subsets from the Advanced Search screen. For now, type in the subset name qualified with [sb].
Search Examples Figure 1 - Limiting Retrieval to the Processing Status SubsetsYou can limit your retrieval to the AIDS subset by using "aids" with the subset search field qualifier [sb] as shown in Figure 2. Figure 2 -Searching Using the AIDS Subset
Coming Soon: Journal Title List Based Subsets Dental (Special List titles and Index Medicus Titles) Nursing (Special List titles and Index Medicus Titles)
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