Example of a PubMed Term Harvesting Form:
To reduce bias multiple databases must be searched. No single database will contain all of the available literature.
Each database should be searched with a database-specific search strategies
Stony Brook University has access to all of the above listed databases!
Choice of additional database depends on nature of question and may include bibliographic databases specific for Bioscience, Nursing, Pharmacology, Education, Business or other fields.
Issues include balancing sensitivity and specificity - when do you stop? Never forget that your choice of limits affects the amount of bias in your study. Access to resources may be an issue. Each database may introduce its own issues: presence/absence of controlled vocabulary, available limits and specifications, and ease or difficulty of retrieving citations.
Gathering and utilizing search vocabulary (search terms) for the literature review
Use available expertise ⇒ consider collaborating with your medical librarian!