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Searching Pubmed Database استخدام قاعدة المعلومات Pubmed 

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Searching Pubmed Database استخدام قاعدة المعلومات Pubmed . برنامج مهارات البحث العلمي مركز البحوث بأقسام العلوم والدراسات الطبية للطالبات الأحد 1433/11/14هـ الموافق30 /9/ 2012 م. د. سيناء عبد المحسن العقيل قسم الصيدلة الإكلينيكية [email protected]. - PowerPoint PPT Presentation
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Page 1: Searching  Pubmed  Database  استخدام قاعدة المعلومات Pubmed 

Searching Pubmed Database المعلومات قاعدة  Pubmedاستخدام

المحسن. عبد سيناء دالعقيل

اإلكلينيكية الصيدلة قسم[email protected]

العلمي برنامج البحث مهاراتوالدراسات العلوم بأقسام البحوث مركز

للطالبات الطبيةالموافق 1433/11/14األحد 2012/ 9 /30هـ

م

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The National Center for Biotechnology Information (NCBI) established on November 4, 1988, as a division of the National Library of Medicine (NLM) at the National Institutes of Health (NIH), US.

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Other NCBI databases

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PubMed Overview • NLM has been indexing the biomedical literature since 1879, to help

provide health professionals access to information necessary for research, health care, and education.

• What was once a printed index to articles, the Index Medicus, became a database now known as MEDLINE. MEDLINE contains journal citations and abstracts for biomedical literature from around the world.

• Since 1996, free access to MEDLINE has been available to the public online via PubMed.

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PubMed Overview (cont.)

• PubMed is a database of bibliographic information drawn primarily from the life sciences literature.

• PubMed contains links to full-text articles at participating publishers' Web sites as well as links to other third party sites such as libraries and sequencing centers.

• PubMed provides access and links to the integrated molecular biology and chemistry databases maintained by NCBI.

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What's in PubMed?

• Over 22 million records representing articles in the biomedical literature and a small selection of items from the NCBI Books database.

• Most PubMed records are MEDLINE citations. • Other records include those in different stages of

processing (including records provided directly from the journal publisher) but destined to be MEDLINE citations.

• A relatively small number of records that are included in PubMed but not selected for MEDLINE.

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Navigating PubMed

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Understanding the Vocabulary

• MEDLINE uses a controlled vocabulary, meaning that there is a specific set of terms used to describe each article. Familiarity with this vocabulary will make you a better PubMed searcher.

• The Medical Subject Headings (MeSH®)

• MeSH is the authority list of the vocabulary terms used for subject analysis of biomedical literature at NLM. MeSH vocabulary is used for indexing journal articles for MEDLINE and is also used for cataloging books and audiovisuals.

• The MeSH controlled vocabulary is a distinctive feature of MEDLINE. It imposes uniformity and consistency to the indexing of biomedical literature. MeSH terms are arranged in a hierarchical categorized manner called MeSH Tree Structures and are updated annually.

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MeSH vocabulary is organized by 16 main branches:

1. Anatomy2. Organisms3. Diseases4. Chemical and Drugs5. Analytical, Diagnostic and Therapeutic Techniques and Equipment6. Psychiatry and Psychology7. Biological Sciences8. Natural Sciences9. Anthropology, Education, Sociology and Social Phenomena10. Technology, Industry, Agriculture11. Humanities12. Information Science13. Named Groups14. Health Care15. Publication Characteristics16. Geographic Locations

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• NLM indexers examine articles and assign the most specific MeSH heading(s) that appropriately describes the concept(s) discussed.

• The indexer will assign as many MeSH headings as appropriate to cover the topics of the article (generally 5 to 15).

• Indexers can also assign Subheadings to further describe a particular aspect of a MeSH concept.

• In addition to assigning MeSH terms that describe the topic of the article, the indexer provides terms that reflect:

characteristics of the group being studied (e.g., the age group, human or other animal, male or female)

the material represented (Publication Types) e.g., Clinical Trials, Editorial, Review

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Activity -1- (5 minutes)

Audience suggest two terms and the relevant MeSH are identified.

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Automatic Term Mapping

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Automatic Term Mapping

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Use filters to narrow your search results.

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Building Blocks

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Autism And Saudi Saudi Autism

2319620850

37

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Autism Not Saudi Saudi Autism

2319620850

37

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Autism and (Saudi or Arabs)

Saudi

Autism

2319620850

37

Arabs

33317

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Building the Search

Before you can search for any information, you should first develop a search strategy.

What is a Search Strategy? A search strategy is a plan that helps you look

for the information you need.

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Search Strategy Tips

• Identify the key concepts. • Determine alternative terms for these

concepts, if needed. • Refine your search to dates, study groups, etc.,

as appropriate. • Practice helps. Strategies and styles will differ

according to personal choice and professional discipline.

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Activity-2-(15 minutes)

Building a Search Strategy Exercise

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Managing the Results• Understand the layout of the search results screen. • Move between pages of results. • Change the display of the retrieved citations. • Adjust the number of citations displayed on a page. • Sort your results. • E-mail, download and print selected citations.• Save selected citations to the Clipboard and Collections. • Create your Bibliography.• Set up filters for your results.

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Understand the layout of the search results screen .

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Change the display of the retrieved citations .

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E-mail, download and print selected citations.

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My NCBI

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My NCBI

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(15 minutes)


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