Treatment Effects on Forensic Psychiatric Patients Measured with the HCR-20 Violence Risk Assessment Scheme
Digital Object Identifier (DOI)
This study focuses on the foundational issue of change in violence risk factors in forensic psychiatric patients across multiple assessment periods using the HCR-20 scheme. HCR-20 assessments performed on 150 forensic psychiatric patients at two special (forensic) hospitals in Sweden were studied in relation to the patients' time at institution, with the aim to investigate a possible relation between level of risk and time at institution. A sub-group was followed across an 18-month period of institutionalization to investigate possible changes in risk factors over time. The latter patients were assessed with the HCR-20 three times, with six months between the assessments. Patients with longer treatment times had lower scores on the HCR-20 Clinical and Risk Management sub-scales, compared to patients who had been admitted to the hospitals for a shorter period of time. This finding was particularly evident on the cross-sectional analyses with respect to the R scale. The clinical risk factors in the C scale also dropped overall in connection with treatment time across both cross-sectional and prospective analyses, although not as substantially as the R scale. The results are consistent with and provide support for the HCR-20 system's proposition that the C and R scales are dynamic, or prone to change.
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Citation / Publisher Attribution
International Journal of Forensic Mental Health, v. 1, issue 1, p. 25-36
Scholar Commons Citation
Belfrage, Henrik and Douglas, Kevin S., "Treatment Effects on Forensic Psychiatric Patients Measured with the HCR-20 Violence Risk Assessment Scheme" (2002). Mental Health Law & Policy Faculty Publications. 325.