S13-04 - Risk Reductions in Dangerous and Severe Personality Disordered Forensic In-Patients Measured with the HCR-20 Violence Risk Assessment Scheme

Abstract

Objectives

Admission to one of the Dangerous and Severe Personality Disordered (DSPD) services in England and Wales is heavily determined by risk status and monitoring of changes in risk over time is a core procedure. However, the extent to which DSPD services are effective in terms of reducing risk is one of the most important questions yet to be answered. This paper seeks to examine whether risk, as measured by the Historical-Clinical-Risk-20 (HCR-20) (Webster et al. 1997), posed by patients admitted to a high-secure psychiatric DSPD unit reduces according to length of time in the unit.

Methods

Admission and discharge/current treatment status HCR-20 measures were collected for 58 concurrent DSPD admissions for period 25^th March 2004 to 22^nd July 2009.

Results

Overall longer ‘treatment’ times were associated with lower scores on the dynamic risk scales of the HCR-20 for a group of patients admitted to the high secure DSPD facility. Specifically, Clinical and Risk scores both reduced by .05 points (monthly). Historical risk did not change over time.

Conclusions

These changes are promising, since positive changes in a high-risk group of mentally disordered offenders on such factors as insight and impulsivity are known to be hard to accomplish. The results provide support for the proposition that the C and R scales of the HCR-20 are dynamic. Attention to whether risk reduction translates to lower institutional infractions and future recidivism is recommended.