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On PubMed, is there a way to see the non-overlap of articles retrieved by two separate searches?

Specifically, if I submit two different but overlapping searches (e.g. the first one about a narrow topic, the second one more broad), is there a way I can block out the overlap of the two searches and see only the new articles that the second (e.g. more broad) search retrieved? Thanks very much.
Last Updated: Dec 13, 2011  |  216 Views
Topics: PubMed

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If I am understanding what you need to do correctly, you can accomplish your task on the Advanced Search page using the set numbers for the search statements and the Boolean operator NOT. I always have to talk to myself when I do this search and say: I want to see the items that are in #2 that are not in #1. Here is an example. Let me know if you have questions.


#3 Search #2 NOT #1 9098

#2 Search periodontal disease/diagnosis[mesh] 16525

#1 Search periodontal disease/diagnosis[major] 7427

Answered by Kate McGrawBookmark and Share

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