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OBJECTIVE To investigate the predictive validity of tools commonly used to assess the risk of violence, sexual, and criminal behaviour. DESIGN Systematic review and tabular meta-analysis of replication studies following PRISMA guidelines. DATA SOURCES PsycINFO, Embase, Medline, and United States Criminal Justice Reference Service Abstracts. REVIEW(More)
OBJECTIVE This study examined whether possession of psychotropic medication and receipt of outpatient services reduce the likelihood of posthospitalization arrest among adults with serious mental illness. A secondary aim was to compare service system costs for individuals who were involved with the justice system and those who were not. METHODS Claims(More)
The predictive validity of violence risk assessments can be divided into two components: calibration and discrimination. The most common performance indicator used to measure the predictive validity of structured risk assessments, the area under the receiver operating characteristic curve (AUC), measures the latter component but not the former. As it does(More)
In this paper synchronization of two different chaotic systems is proposed using Sliding Mode Control scheme. Lu chaotic system is used as master system and Bhalekar-Gejji chaotic system is used as slave system. Convergence of the synchronizing error is achieved using the Lyapunov stability theory. Synchronization of master and slave system is achieved(More)
We conducted a meta-analysis of studies examining the association between the Val158Met COMT polymorphism and violence against others in schizophrenia. A systematic search current to November 1, 2011 was conducted using MEDLINE, EMBASE, CINAHL, PsycINFO, ProQuest, and the National Criminal Justice Reference Service and identified 15 studies comprising 2,370(More)
A number of dopamine-related genes have been implicated in the etiology of violent behavior and conduct problems. Of these genes, the ones that code for the enzymes that influence the turnover of dopamine (DA) have received the most attention. In this study, we investigated 12 genetic polymorphisms in four genes involved with DA functioning (COMT, MAOA and(More)
OBJECTIVES To undertake a systematic review on structured violence risk assessment tools in individuals with schizophrenia. METHODS A systematic search was conducted from 1990 to 2011 to identify violence risk assessment tools and studies examining their predictive validity. Item content of the identified instruments was analyzed, and areas under the(More)
There are a large number of structured instruments that assist in the assessment of antisocial, violent and sexual risk, and their use appears to be increasing in mental health and criminal justice settings. However, little is known about which commonly used instruments produce the highest rates of predictive validity, and whether overall rates of(More)
The objective of the present review was to examine how predictive validity is analyzed and reported in studies of instruments used to assess violence risk. We reviewed 47 predictive validity studies published between 1990 and 2011 of 25 instruments that were included in two recent systematic reviews. Although all studies reported receiver operating(More)
Clinical guidelines recommend that violence risk be assessed in schizophrenia. Current approaches are resource-intensive as they employ detailed clinical assessments of dangerousness for most patients. An alternative approach would be to first screen out patients at very low risk of future violence prior to more costly and time-consuming assessments. In(More)