[Epidemiologic aspects of the first hospitalization of schizophrenics].

A clinico-epidemiological analysis was performed with respect to the primary hospitalization of schizophrenic patients in the Tomsk Mental hospital from 1948--1951 (the I period), 1959--1961 (the II period), 1969--1971 (the III period). The study demonstrated a statistically significant increase in the level of primary hospitalization (per 10000 population) from 0.77 in the I period, 1.4 in the II period to 2.29 in the III one. An increase in the amount of hospitalizations was mainly due to patients with a slowly progress development of the disease. An extensive use of aminazin treatment in 1959--1961 did not lead to a drop in the mean duration of primary hospitalization of schizophrenic patients or their chronification, compared to the period of shock therapy. A statistically significant decrease in these indices was seen only in 1969--1971 during the period of an implementation of comprehensive rehabilitation progress.