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characteristics of secondary resources |
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-complete citation to the primary article -abstracts summarize the primary article |
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-saves time -single database to purchase -can search multiple publications at once -computerized -can combine search terms easily |
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-cost of database -specialized training may be required -cost of materials -computer necessary |
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-time it takes from publication to actual entry into the indexing service |
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-Index Medicus -Medline -International Pharmaceutical Abstracts -Iowa Drug Information System |
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-paper version of Medline -first published in 1879 -National Library of Medicine took over publication in 1960 -pure indexing service, no interpretation of information -indexed over 3700 journal titles |
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Index Medicus scope of coverage |
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-86% of citations are from English language journals -76% have a published abstract available -article types-reviews, letters, care reports, clinical trials |
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Index Medicus standard vocabulary |
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-MeSH -25000 headings/descriptors with tree structure numbers |
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-controlled vocabulary developed and utilized by NLM for indexing primary literature -arranged in both an alphabetic and heiarchial structure |
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-used when you need to narrow or broaden a search and you need to look for a different MeSH term -categorizes all MeSH terms into a hierarchy from general to most specific -Each MeSH term appears in at least one place in the trees, but may appear in more than one tree -16 main branches Each MeSH term has a tree number that positions the term in the hierarchy |
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subheadings (allowable qualifiers) |
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-organizes articles into groups of similar topics to make searching easier -there is a selected set of subheadings for each MeSH term -subheadings are used to narrow a search by focusing the MeSH to a specific category of biomedicine -there are over 800 subheadings available, but only certain subheadings apply to each MeSH term |
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-available through OVID or online at pubmed.com -computer version of Index Medicus provided by the NLM -NLM website (nim.nih.gov) also has access to other databases |
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-over 16 million records from 1950 to present -about 4800 journals -uses MeSH vocabulary |
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-year of publication (PY) -language (LA) -study groups-human/animal -gender -publication type (PT) -age group |
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International Pharmaceutical Abstracts (IPA) |
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-edited by(ASHP) -focuses on human studies -primarily English language journals, but foreign articles are included -has abstracts from ASHP clinical meetings |
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->850 journals -accessibility-online, CDROM,and as printed paper copies -primary focus of index is pharmacy |
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Iowa Drug Information System (IDIS) |
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-online resource which covers human drug therapy topics -includes entire article on microfiche or online, good for small libraries -apprx. 200 journals (english and human subject articles only) |
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-rapid retrieval of a citation -only printed articles from 1995 -can combine terms using online to find citations but must still retrieve articles from microfiche (prior 1995) |
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-lag time 1 week to months depending on priority of the journal |
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(default)-will capture and include all narrower terms in the tree structure beneath your search term. This will broaden your search. |
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-lag time 6-14 weeks depending on priority |
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-lag time around 4 weeks depending on priority |
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-looks for term in both the title and abstract fields |
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-looks for term in title of indexed articles |
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combines a textword and MeSH term search, this is the default in PubMed if you just type in the query box (if a MeSH term is available) |
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-each article has a unique ID number |
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