Psychiatric consultations in a Dutch university hospital: a report on 1814 referrals, compared with a literature review.

A report is presented of four years of psychiatric consultations with inpatients in the University Hospital Leyden, The Netherlands. The characteristics of these 1814 consultations are compared with a comprehensive review of 42 publications (mostly from the United States) on psychiatric referral patterns in general hospitals. Compared to the literature, the present study covers a long period of investigation and a high number of consultations in quite a large hospital. Yet, the figures in this report are surprisingly similar to the median numbers that can be compiled from the literature. There is, however, a striking lack of conformity in the classifications used by authors in reporting reasons for referral, psychiatric diagnoses, and the actions of psychiatric consultants. A plea is made, therefore, for better definition and classification of patients seen by consultation-liaison services.