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Where to search

Databases

Databases contain resources from different sources and while there may be some overlap between databases, they each contain unique collections of information. To ensure your systematic search is comprehensive, it will need to be replicated across multiple databases.

Most databases will allow you to create a personal account which lets you to save your searches and search history.

MEDLINE

In health research it is recommended you formulate your search strategy firstly in MEDLINE within the OVID environment when appropriate.

MEDLINE allows the user to undertake a comprehensive search strategy, providing information such as Scope of Medical Subject Heading (MeSH), keywords used for and a Note field providing information about the MeSH.

Please note: 

A comprehensive list of MEDLINE searching tips is available here.

Types of databases

Finding evidence involves searching health databases. 

As no one database contains all the available health literature, it is important to widen your search. Depending on your topic, consider the following types of databases:

Primary/Unfiltered databases

Contains original studies published in journals, often referred to as unfiltered or primary resources. Where available, searching these databases is more effective if you use a combination of keywords and subject headings (see 'database tutorials').

Pre-appraised/filtered databases

Several databases provide assessments of original studies as well as access to systematic reviews which help summarise the results from a number of studies. This is referred to as secondary literature.

Find more databases