راهنمای استفاده از پایگاه اطلاعاتی ovid PDF Ovid provides access to the following health databases:
Selecting a database
Medline - 1946 onwards - Covers the world's leading journal literature on medical, healthcare, medical education, nursing, dental and veterinary topics.
Embase - 1974 onwards - Covers biomedical literature worldwide, but concentrates on European sources and emphasises the pharmacological effects of drugs. Covers most areas of medicine including psychiatry (but not psychology).
Allied and Complementary Medicine (AMED) - 1985 onwards - Covers complementary and alternative medicine.
Health Management Information Consortium (HMIC) – 1979 onwards - Coverage includes official publications, journal articles and grey literature on: health service policy, management and administration, with an emphasis on the NHS.
How to log in
After logging into your RCP Athens account at www.openathens.net select ‘Databases: Medline, Embase, HMIC…’ – this should take you to Ovid’s ‘Select resources’ screen:
To search one database (eg Medline), click in the box to the left of the title and then click on the OK button
You will notice that both Embase and Medline provide more than one version of the database as they provide different time period coverage – you can see more detail about what is included in the different database versions by clicking on the small information (i) icon to the right of the database’s name.
It is possible to select more than one database and search them together, however, it is more effective to search each database separately as they do have different indexing terms. By selecting to search databases together you will lose the option to search the database subject headings for example, MeSH in Medline.
There are 3 key search options in OvidSP
< >Basic Search
is the default search option and allows you to use natural language so that you can enter a complete question or phrase stated in plain English. When using the natural language search, it's a good idea to check the box labelled Include Related Terms
to be sure that synonyms are included in your search. If you want more control and accuracy, you should use the Advanced Search option. Find Citation
– allows you to search for specific articles using title, author, journal etc. to retrieve a reference. The find citation option is a useful tool for finding articles when you only have a partial reference or for quickly getting to the full-text of an article (for journals where the RCP has an online subscription).Advanced Search
- allows you to construct more precise searches by linking your search to subject headings (eg. MeSH within Medline). These index terms provide a way to search all articles on a topic by using one phrase to describe that particular topic. Please note that if you are searching more than one database, the option to ‘Map term to subject heading’ will not be available.
Click on the Advanced Search
tab and enter a search term eg education
Make sure that Map Term to Subject Heading is checked (this is usually checked by default) and then click Search.
Advanced search cont.
< >By selecting the Map Term to Subject Heading
option the database then links your search terms to the most relevant index headings.
From this screen you can control how broad or focused you want your results to be:
Checking the Explode
box will retrieve citations using the selected term and all of its more specific terms.
Checking the Focus
box will limit your results to those documents in which your subject heading is considered to be the major point of the article.
Advanced search cont.
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Once you’ve selected any relevant headings from the list using the explode or focus options, select ‘Include all subheadings’ above the list and click continue. The default search for ‘Combine selections with’ is OR and, at this stage, this is the recommended option when selecting more than one topic from the list of subject headings.
If your search term does not match to any suitable subject headings then you can either select the term to ‘search as keyword’ (this should appear at the bottom of the list of suggested headings) or return to the advanced search screen (by clicking the ‘Search’ option on the top navigation menu) and enter another term.
The map term to subject heading function is very useful, however, it is worthwhile running a combination of searches using both subject headings and keywords to get the best results.
< >Repeat the steps above to search for any additional subject headings that are relevant to your search topic. Search History
should appear at the top of your results as you run searches in Advanced Search.
Using ‘AND’ to combine search terms
Once you have run a number of subject heading or keyword searches you will be able to combine by selecting the searches from the Search History and using the AND or OR buttons.
Use the ‘And’ button to combine keywords or subject headings to find records where ALL of your search terms appear within the records.
Using ‘OR’ to combine search terms
Use the ‘Or’ button to combine keywords or subject headings to find records where ANY of your search terms appear in the records.
You can narrow down your search by using a variety of limits. You can restrict by year, language, publication type etc.
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From the Search History select the search you want to limit.
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Click Limits under the search box for the most popular limits such as date and language.
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Click the Additional Limits button for further options.
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After selecting limits e.g. date click the Search button
To view the results from the most recent search, scroll down the page, or select ‘Display’ on the right-hand side of the Search History box.
Your search results will be displayed in the following way:
There are several options available for displaying references:
< >To view the abstract for a specific reference, click on View Abstract
at the bottom of the reference. Click on Complete Reference
to see the entire record, including subject heading terms. Where Full Text
links are available, you can display and print full articles. Please note that if the RCP does not have a subscription to a particular article that you wish to view, we can help you to source it as an inter-library loan for a small fee.Find Similar
retrieves articles containing related words and synonyms in their titles. This may help you locate further articles on an area of interest.Find Citing Articles
can also help you to locate articles written on a similar subject by retrieving citations that have cited your chosen article.
You can view details of your search and alter the display on the left hand panel of the search results screen.
From this side panel you also have the option to filter and narrow your search results, using a variety of options.
< >Use the proximity operator adjX
to find documents that contain two search terms within a specified number of words, for example:Use the search operators – AND, OR – to combine your search words in different ways to narrow or broaden your search.Use truncation – the asterisk* will allow you to retrieve variations of your search term:Use the wildcard symbol (?
) to substitute one character or none in the middle of a word. This is particularly useful for covering English and American spellings, eg colo?r
retrieves both colour
. Be aware of the different terms that may be used in different regions. In the USA for example, the term for newly-graduated doctors is resident
and so foundation doctors
is unlikely to yield many relevant results. Similarly, it is common in the USA to use the term evaluation instead of assessment, although assessment is also used, so you should search both terms in order to conduct the widest possible search.www.ovid.com
– provides an overview of the basic search function (3 minutes) http://site.ovid.com/site/help/tutorials_ovidsp_3/basicSearch20100401-2/basicSearch20100401.htm
– provides an overview of the advanced search function (5 minutes) http://site.ovid.com/site/help/tutorials_ovidsp_3/advSearch20100429/advSearch20100429.htm
Working with results
– covers how to print, email or export results (4 minutes) http://site.ovid.com/site/help/tutorials_ovidsp_3/workingResults20101231/workingResults20101231.htm
Applying limits to search results
– includes how to limit by date, language etc. (3 minutes) http://site.ovid.com/site/help/tutorials_ovidsp_3/limits20100331-2/limits20100331-2.htm
Please get in touch if you have any problems searching the health databases.