The final outcome for the Peterborough SIB cohort 1 is that there were 142 reconviction
events per 100 eligible offenders released from HMP Peterborough between
9th September 2010 and 30th June 2012, compared with 155 re-conviction events per
100 offenders for the national control group over the same period. This represents a
reduction of 8.4% in the frequency of re-conviction events for the Peterborough cohort