Table 1.

The sites

Site	Type of emergency psychiatric services	Psychiatric patients seen (6-month Period)	Primary catchment area	Public or private?
1. Cooper University Hospital	Consultation-liaison	329	Urban	Private
2. University of Michigan	PES	2100	Suburban	Private
3. University of Rochester	PES	3286	Urban	Private
4. Parkland Medical Center	PES	4619	Urban	Public
5. Massachusetts General Hospital	PES	3439	Urban	Private
6. Denver Health Medical Center	PES	2139	Urban	Public
7. California Pacific Medical Center	Consultation-liaison	363	Urban	Private
8. University of California, San Diego Medical Center	Consultation-liaison	512	Urban	Public
Total		16,787

All sites were affiliated with academic medical centers. Sites were staffed with a combination of psychiatric nurses, psychiatry residents and/or attending psychiatrists. Patient care was supervised by the attending psychiatrist, though the primary evaluation generally was performed by a psychiatric resident or psychiatric nurse.