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The "1%" study

This study focuses on the distribution of violent convictions in the Swedish population between 1973 and 2004 and identifies criminological, parental and psychiatric risk factors for persistence in crime. We use de-identified data from the nationwide Multi-Generation register and other linked registers, such as: Brå (Swedish National Council for Crime Prevention), EpC (Centre for Epidemiology at the National Board of Health and Welfare), KrA (Military Archives of Sweden), Pliktverket (National Service Administration), SCB (Statistics Sweden) and SiS (National Board of Institutional Care), created by Professors Lichtenstein and Långström at the Karolinska Institute, Stockholm. The study subjects are individuals born between 1958 and 1980 and living in Sweden on their 15th birthday (n=2 393 765). Persistent violent offenders (those with a life-time history of three or more violent crime convictions) are compared to individuals having one or two such convictions, and to matched non-offenders.

Findings. Almost 4% of the total population had at least one conviction while 1% of the total population accounted for over 60% of all convictions. Persistence in violence was most strongly associated with male sex and with any personality disorder, any violent conviction before age 19, drug-related offences, nonviolent criminality, and substance use disorders, but was only weakly associated by major mental disorders.

Publication

Örjan Falk, Märta Wallinius, Sebastian Lundström, Thomas Frisell,
Henrik Anckarsäter, Nóra Kerekes: The 1% of the Population Accountable for 63% of All Violent Crime Convictions (submitted)

Principal Investigator: Nora Kerekes 
Researcher: Örjan Falk

Contact Information

Nóra Kerekes

Contact Information

Örjan Falk

Page Manager: Stefan Axelsson|Last update: 8/26/2014
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