To ask the Secretary of State for the Home Department with reference to Public Service Agreement 25 on drug-related offending, referred to on page 15 of his Department's Autumn Performance Report 2009, what data were used to establish the baseline measure of 260.1 proven offences per 100 offenders; how many offences of each type were defined as drug-related; and what the size was of the offender cohort.
The baseline for PSA 25 indicator 3 (rate of drug-related offending) was established using data from the Drug Interventions Management Information System (DIMIS), the Police National Computer (PNC) and the Offender Assessment System (OASys). This is a proxy measure for drug-related offending, which monitors the rate of proven offending by those identified as class A drug misusers in the course of their contact with the criminal justice system.
The baseline (2008) cohort, identified during the period January to end March 2008, comprised 20,934 individuals identified as (class A) drug misusers. The number of offences committed by this group within 12 months following identification and proven by court conviction was 54,462 proven offences, giving a baseline rate of 260.1 per 100 offenders or 2.6 offences per offender.
The measure includes all offence types committed by known drug misusers where a conviction at court has been recorded on the PNC. Cautions, other pre-court disposals and offences taken into consideration are not counted.