Data from police records, court reports, and clinical files on 2,735 psychiatric cases referred from the Alaskan criminal justice system was evaluated. The Data spanned the 1977 through 1981 timeframe. The findings indicated that only 0.2 to 2.0 percent of all schizophrenic persons in the community were arrested for violent crimes each year, accounting for 1.1 to 2.3 percent of all arrests for violent crimes. The psychiatrists agreed on the competency and responsibility in 79 percent of all the evaluated cases. And of total criminal cases, successful insanity defense occurred 0.1 percent of the time or less. 2 table, 31 references. (Author abstract modified)