People with psychoses commit about 5% of the violent crimes in Sweden

Research question What is the impact of serious mental illness on violent crime in Sweden?

Answer People with psychoses commit about 5% of violent crimes.

Why did the authors do the study? We already know that people with a serious mental illness are substantially more likely than others to commit violent crime. But this doesn't tell us much about the absolute risk they pose to the public. These authors wanted answers to two different but related questions: what proportion of violent crimes are these people responsible for, and how much would the crime rate go down if serious mental illness were eliminated or if all patients were locked up indefinitely?

What …