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Systematic Reviews for the Health Sciences

The Actual Search

Running the actual searches for your systematic review requires a few things. Prior to beginning be prepared to:

  1. Run all searches in a single date
  2. Save all results and export into a citation manager
  3. IF you use any filters, make note of the ones applied to your search
  4. Determine if grey literature will be included and how this searching will be conducted
  5. Keep track of EVERYTHING (totals from each database, number of duplicates, search strings, date ran, etc.). Some information you will need for your PRISMA flow diagram and other for the Methods section.

CONDUCT THE SEARCH

Run all database searches on the same day

Search for grey literature, hand searching, etc. (if applicable)

Recommendations

Utilize the PRISMA-S Checklist to ensure that you are noting all required components for reporting the searches.

Section/topic # Checklist Item Location(s) Reported
INFORMATION SOURCES & METHODS      
Database name 1 Name each individual database searched, stating the platform for each  
Multi-database searching 2 If databases were searched simultaneously on a single platform, state the name of the platform listing all of the databases searched.  
Study registries 3 List any study registries searched  
Online resources and browsing 4 Describe any online or print source purposefully searched or browsed (e.g. table of contents, print conference proceedings, web sites), and how this was done.  
Citation searching 5 Indicate whether cited references or citing references were examined, and describe any methods used for locating cited/citing references (e.g. browsing references lists, using a citation index, setting up email alerts for references citing included studies).  
Contacts 6 Indicate whether additional studies or data were sought by contacting authors, experts, manufacturers, or others.  
Other methods 7 Describe any additional information sources or search methods used.  
SEARCH STRATEGIES      
Full Search strategies 8 Include the search strategies for each database and information source, copied and pasted exactly as run.  
Limits and restrictions 9 Specify that no limits were used, or describe any limits or restrictions applied to a search (e.g., date or time period, language, study design) and provide justification for their use.  
Search filters 10 Indicate whether published search filters were used (as originally designed or modified), and if so, cite the filter(s) used.  
Prior work 11 Indicate when search strategies from other literature reviews were adapted or reused for a substantive part or all of the search, citing the previous review(s)  
Updates 12 Report the methods used to update the search(es) (e.g., rerunning searches, email alerts).  
Dates of searches 13 For each search strategy, provide the date when the last search occurred.  
PEER REVIEW      
Peer Review 14 Describe any search peer review process.  
MANAGING RECORDS      
Total Records 15 Document the total number of records identified from each database and other information sources.  
Deduplication 16 Describe the processes and any software used to deduplicate records from multiple database searches and other information sources  

 

Step 12: Run the searches

Running the individual searches in each database should be straight forward since your search strings have already been created and tested. Your searches may return a large number of results and you want to keep track of all of these - including duplicates and those you will exclude later. Citation managers or Covidence can help you with this process. The library currently supports:

Other helpful tools include:

Step 13: Grey Literature Search

A comprehensive and exhaustive systematic review will include a search of nontraditional publications known as grey literature. This type of literature is not usually found in your average library database. Examples of grey literature include:

  • Conference proceedings
  • White papers
  • Technical Reports
  • Theses/Dissertations
  • Government reports

Grey literature can be found through:

Other search methods include contacting experts, citation and reference searching, and hand searching key journals.

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