PubMed provides free access to MEDLINE, a database of citations and abstracts in the fields of medicine, nursing, dentistry, veterinary medicine, health care systems, and preclinical sciences. Full-text is sometimes available for free.

Provides access to statistical data produced by U.S. Federal agencies, States, private organizations, and major intergovernmental organizations. There are up to 2 billion charts, maps, views, rankings, time series and tables available for use in the Data-Planet repository. Data-Planet Statistical Datasets offers powerful capabilities to compare & contrast multiple data series, perform statistical calculations on the data, and customize output views.

ProQuest Statistical Insight not only encompasses a world of statistical information using one common interface, but it takes you directly to the data you need. Instead of relying on the limited capabilities of free-text searching, which is particularly ineffective with the tabular format of statistical data, or wading through large text documents only to find it does NOT have the statistics you need, ProQuest Statistical Insight allows you to go straight to the tables, or to easily find the right publication with the right key tables.