Comparison of the clinical utility of four drug information services.

The clinical utility of International Pharmaceutical Abstracts, Iowa Drug Information Service, deHaen Drugs in Use, and deHaen Drugs in Research was compared. The number of references obtained for questions in five different clinical areas, and the amount of time for each search, were studied and compared. The Iowa Drug Information Service appeared to have the highest overall relative utility for obtaining clinical information. The two deHaen services offered broad coverage of the primary clinical literature. International Pharmaceutical Abstracts was effective in locating many useful references.