servation period and demonstrates the possibilities of data evaluation, focusing on the interval of relapses.Further examples for evaluation of these reconviction data are presented: offence related studies (Stefan Harrendorf) and gender-based results of sanctioning and reconviction (Tanja Köhler).Finally the contribution of Volker Grundies deals with reconviction in relation to age and gender based on data of the Freiburg cohort study.