• The results of using formal diagnostic criteria on a series of newly admitted inpatients are presented. Several strategies were employed in the management of the undiagnosed patients. The percent of undiagnosed patients significantly decreased with time during the course of hospitalization.
Croughan JL, Woodruff RA, Reich T. The Management of Patients With Undiagnosed Psychiatric Illness. Arch Gen Psychiatry. 1979;36(3):341-346. doi:10.1001/archpsyc.1979.01780030107010