About MLTrends

MLTrends graphs word and phrase usage trends in the Medline database of biomedical abstracts.


Commas separate multiple search terms. For example: breast, cancer.

Quotes delimit phrases. For example: "breast cancer".

AND, OR, NOT and brackets allow Boolean search term grouping, For example:breast AND (cancer OR tumour).

Adjacent words or phrases without explicit operators are implicitly OR-ed together. For example:breast AND (cancer tumour).

Note that searches are case insensitive, though the Boolean operators must be upper case to distinguish them from search terms.

Data normalization

MLTrends offers three normalization options:

Developed by Gareth Palidwor and Miguel Andrade
Hosted at the Ottawa Hospital Research Institute
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