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How to use Medline via OVID
Searching using Mapping

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The term drug addiction is mapped to only one subject heading, Substance-Related Disorders. This is a term that might not immediately come to mind, so it shows the value of allowing the system to find the subject headings for you. As seen below the database now offers you two options: Explode or Focus.
    Explode:
    • selecting this box will retrieve records not only containing the subject heading listed, but also any or all more narrow or specific terms (these can be seen by clicking on the heading itself)
    • using Explode will increase the number of records you retrieve

    Focus:

    • clicking on this box will restrict your search to those records where the concept listed is the main point of the article
    • useful in a search which has retrieved a large number of records and/or where only a few articles are required

Explode the Substance-Related Disorders heading by selecting the Explode box next to it, then click on "Continue".

Screenshot - 5684 Bytes

 

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Last updated 11 February, 2003.
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