Abstract
A total population screening of children born during 1962-1976 and living in the Gothenburg [Sweden] region at the end of 1980 was carried out to obtain prevalence figures for infantile autism and other childhood psychoses. The prevalence figure for infantile autism was 2.0/10,000 and for other childhood psychoses 1.9/10,000. Boys were much more often affected by infantile autism than girls. In the case of other psychoses, no such over-representation was seen. A majority of the children were mentally retarded, and only 4% had tested IQ exceeding 100. The results are in good agreement with the 3 earlier epidemiological studies concerned with childhood psychosis.