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First published on February 11, 2008 International Journal of Offender Therapy and Comparative Criminology 2008, doi:10.1177/0306624X07312952
© 2008 SAGE Publications
Accuracy of the Static-99 in Predicting Recidivism in Switzerland
Jerome Endrass*,
Frank Urbaniok,
Leonhard Held,
Stefan Vetter,
and
Astrid Rossegger
* To whom correspondence should be addressed. E-mail: jerome.endrass{at}mac.com.
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Abstract |
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The Static-99 is a widely used actuarial risk assessment instrument. Various international validation studies have found satisfactory to good predictive validity for the Static-99, with the area under the curve (AUC) between 59% and 95%. This study is the first evaluation of the predictive accuracy of the Static-99 among sex offenders in Switzerland. The Static-99 scores of 69 violent/sex offenders in Switzerland were assessed using data from their psychiatric assessments. Recidivism was operationalized as reconviction assessed from penal records. The Static-99 risk levels were predictive for recidivism (AUC = .758) among our population. The results are discussed on the basis of the literature.

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