Of studies, syntheses, synopses, summaries, and systems: the "5S" evolution of information services for evidence-based health care decisions.

The article offers the author's views on an attractive array of information services that can help people take evidence-based health care decisions. The 5S model for the organization of evidence-based health care information services provide a full range of evidence concerning management options for a given health problem. The model is being extensively used by physicians as well as patients.