Predictors of Mental Health Review Tribunal (MHRT) outcome in a forensic inpatient population: a prospective cohort study.

BACKGROUND: Previous studies have investigated factors associated with outcome at Mental Health Review Tribunals (MHRTs) in forensic psychiatric patients; however, dynamic variables such as treatment compliance and substance misuse have scarcely been examined, particularly in UK samples. We aimed to determine whether dynamic factors related to behaviour, cooperation with treatment, and activities on the ward were prospectively associated with outcome at MHRT. METHODS: At baseline, demographic, clinical, behavioural, and treatment-related factors were ascertained via electronic medical records and census forms completed by the patient's clinical team. Data on MHRTs (i.e., number attended, responsible clinician's recommendation, and outcome) were collected at a 2-year follow-up. Logistic regression analyses were performed to determine factors associated with outcome among those who attended a MHRT within the follow-up period. Of the 135 forensic inpatients examined at baseline, 79 patients (59%) attended a MHRT during the 2-year follow-up period and therefore comprised the study sample. Of these 79 patients included in the current study, 28 (35%) were subsequently discharged. RESULTS: In univariable analyses, unescorted community leave, responsible clinician's recommendation of discharge, and restricted Mental Health Act section were associated with a greater likelihood of discharge at MHRT; whilst inpatient aggression, a recent episode of acute illness, higher total score on the Historical Clinical Risk - 20 (HCR-20), higher HCR-20 clinical and risk scores, and agitated behaviour were negatively associated with discharge (p < 0.05). In multivariable analyses, HCR-20 clinical scale scores and physical violence independently predicted outcome at tribunal after controlling for other dynamic variables. CONCLUSION: By identifying dynamic factors associated with discharge at tribunal, the results have important implications for forensic psychiatric patients and their clinical teams. Our findings suggest that by reducing levels of agitated behaviour, verbal aggression, and physical violence on the ward, achieving unescorted community leave, and targeting specific items on the HCR-20 risk assessment tool, patients may be able to improve their changes of discharge at a MHRT.

Violent offending by UK military personnel deployed to Iraq and Afghanistan: a data linkage cohort study.

BACKGROUND: Violent offending by veterans of the Iraq and Afghanistan conflicts is a cause for concern and there is much public debate about the proportion of ex-military personnel in the criminal justice system for violent offences. Although the psychological effects of conflict are well documented, the potential legacy of violent offending has yet to be ascertained. We describe our use of criminal records to investigate the effect of deployment, combat, and post-deployment mental health problems on violent offending among military personnel relative to pre-existing risk factors. METHODS: In this cohort study, we linked data from 13,856 randomly selected, serving and ex-serving UK military personnel with national criminal records stored on the Ministry of Justice Police National Computer database. We describe offending during the lifetime of the participants and assess the risk factors for violent offending. FINDINGS: 2,139 (weighted 17.0%) of 12,359 male UK military personnel had a criminal record for any offence during their lifetime. Violent offenders (1,369 [11.0%]) were the most prevalent offender types; prevalence was highest in men aged 30 years or younger (521 [20.6%] of 2,728) and fell with age (164 [4.7%] of 3027 at age >45 years). Deployment was not independently associated with increased risk of violent offending, but serving in a combat role conferred an additional risk, even after adjustment for confounders (violent offending in 137 [6.3%] of 2178 men deployed in a combat role vs 140 (2.4%) of 5,797 deployed in a non-combat role; adjusted hazard ratio 1.53, 95% CI 1.15-2.03; p=0.003). Increased exposure to traumatic events during deployment also increased risk of violent offending (violent offending in 104 [4.1%] of 2753 men with exposure to two to four traumatic events vs 56 [1.6%] of 2944 with zero to one traumatic event, 1.77, 1.21-2.58, p=0.003; and violent offending in 122 [5.1%] of 2582 men with exposure to five to 16 traumatic events, 1.65, 1.12-2.40, p=0.01; test for trend, p=0.032). Violent offending was strongly associated with post-deployment alcohol misuse (violent offending in 120 [9.0%] of 1363 men with alcohol misuse vs 155 [2.3%] of 6768 with no alcohol misuse; 2.16, 1.62-2.90; p<0.0001), post-traumatic stress disorder (violent offending in 25 [8.6%] of 344 men with post-traumatic stress disorder vs 221 [3.0%] of 7256 with no symptoms of post-traumatic stress disorder; 2.20, 1.36-3.55; p=0.001), and high levels of self-reported aggressive behaviour (violent offending in 56 [6.7%] of 856 men with an aggression score of six to 16 vs 22 [1.2%] of 1685 with an aggression score of zero; 2.47, 1.37-4.46; p=0.003). Of the post-traumatic stress disorder symptoms, the hyperarousal cluster was most strongly associated with violent offending (2.01, 1.50-2.70; p<0.0001). INTERPRETATION: Alcohol misuse and aggressive behaviour might be appropriate targets for interventions, but any action must be evidence based. Post-traumatic stress disorder, though less prevalent, is also a risk factor for violence, especially hyperarousal symptoms, so if diagnosed it should be appropriately treated and associated risk monitored. FUNDING: Medical Research Council and the UK Ministry of Defence.

Impact of pre-enlistment antisocial behaviour on behavioural outcomes among U.K. military personnel.

PURPOSE: Concern has been raised over alleged increases in antisocial behaviour by military personnel returning from the deployment in Iraq and Afghanistan. U.S.-based research has shown that post-deployment violence is related not only to combat experience, but also to pre-enlistment antisocial behaviour (ASB). This study aimed to examine the association between pre-enlistment ASB and later behavioural outcomes, including aggression, in a large randomly selected U.K. military cohort. METHODS: Baseline data from a cohort study of 10,272 U.K. military personnel in service at the time of the Iraq war in 2003 were analysed. The associations between pre-enlistment ASB and a range of socio-demographic and military variables were examined as potential confounders. Logistic regression analyses were performed to examine the relationship between pre-enlistment ASB and military behavioural outcomes such as severe alcohol use, violence/aggression and risk-taking behaviour, controlling for confounders. RESULTS: 18.1% were defined as having displayed pre-enlistment ASB. Pre-enlistment ASB was significantly associated with factors such as younger age, low educational achievement, male gender, non-officer rank, Army personnel, being a regular, increasing time spent on the deployment and having a combat role. Pre-enlistment ASB was associated with increased risk of negative behavioural outcomes (severe alcohol misuse, outbursts of anger or irritability, fighting or assaultative behaviour and risk-taking behaviour), after controlling for confounders, suggesting that such background information may identify individuals who are more vulnerable to subsequent behavioural disturbance. CONCLUSION: The results of this study suggest that those already demonstrating ASB prior to joining the military are more likely to continue on this trajectory, thus emphasising the importance of considering pre-enlistment behaviour when exploring the aetiology of aggression in military personnel.

Residential mobility among individuals with severe mental illness: cohort study of UK700 participants.

BACKGROUND: There is limited research concerning residential mobility among people with severe mental illness. AIM: To investigate residential mobility over 2 years among participants in the UK700 trial of intensive case management in severe mental illness. METHODS: Cohort study. RESULTS: Over 60% of participants had recently wanted to move or improve their accommodation but this was not associated with mobility. Mobility was strongly associated with younger age and drug and alcohol misuse and weakly associated with being unmarried and needs relating to a benefit claim. Among those likely to have been living in supported housing, mobility was also associated with being able to look after the home. Among those living independently, mobility was also associated with being an inpatient at randomisation. DISCUSSION: Wanting to move did not predict mobility. This contrasts with findings in the general population. Several of the associations found are possibly due to forced mobility. The association with younger age is likely to represent voluntary mobility as in the general population. CONCLUSIONS: Future studies of residential mobility in severe mental illness should make use of a wider range of methods and should draw on the general population literature.

Randomised controlled trial of the short-term effects of OROS-methylphenidate on ADHD symptoms and behavioural outcomes in young male prisoners with attention-deficit/hyperactivity disorder (CIAO-II).

BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is a highly prevalent disorder, seen in 20-30% of young adult prisoners. Pharmacoepidemiological studies, a small randomised controlled trial and open trial data of methylphenidate suggest clinically significant reductions in ADHD symptoms, emotional dysregulation, disruptive behaviour and increased engagement with educational activities. Yet, routine treatment of ADHD in offenders is not yet established clinical practice. There is continued uncertainty about the clinical response to methylphenidate (MPH), a first-line treatment for ADHD, in offenders, who often present with an array of complex mental health problems that may be better explained by states of inattentive, overactive, restless and impulsive behaviours. To address this problem, we will conduct an efficacy trial to establish the short-term effects of osmotic-controlled release oral delivery system (OROS)-methylphenidate (Concerta XL), an extended release formulation of MPH, on ADHD symptoms, emotional dysregulation and behaviour. METHODS: This study is a parallel-arm, randomised, placebo-controlled trial of OROS-MPH on ADHD symptoms, behaviour and functional outcomes in young male prisoners aged 16-25, meeting Diagnostic and Statistical Manual of Mental Disorders, fifth edition criteria for ADHD. Participants are randomised to 8 weeks of treatment with OROS-MPH or placebo, titrated over 5 weeks to balance ADHD symptom improvement against side effects. Two hundred participants will be recruited with a 1:1 ratio of drug to placebo. The primary outcome is change in level of ADHD symptoms after 8 weeks of trial medication. DISCUSSION: Potential benefits include improvement in ADHD symptoms, emotional dysregulation, attitudes towards violence and critical incidents and increased engagement with educational and rehabilitation programmes. Demonstrating the efficacy and safety of MPH on ADHD symptoms and associated impairments may provide the data needed to develop effective healthcare pathways for a significant group of young offenders. Establishing efficacy of MPH in this population will provide the foundation needed to establish long-term effectiveness studies with the potential for demonstrating significant reductions in criminal behaviour and improved health-economic outcomes. TRIAL REGISTRATION: ISRCTN registry, ISRCTN16827947, 31st May 2016; EudraCT number, 2015-004271-78, 31st May 2016. Last particpant last visit 6 June 2019. Data lock 27 August 2019.

Violence in psychosis: estimating the predictive validity of readily accessible clinical information in a community sample.

OBJECTIVE: This study sought to assess the validity of different combinations of readily available clinical information in predicting assaults by patients with psychosis, predominantly in the community. The combinations of information were: a) age and sex, b) age, sex and history of criminality/violence c) age, sex, history of violence and drug use and d) age, sex, history of violence, drug use and personality disorder. METHOD: 708 subjects were followed for 2 years. Assaults were measured using multiple sources of information. Prediction validity was measured using the area under the receiver operating curves (AUC) and the number needed to detain (NND). A simple prediction tool was developed. RESULTS: The AUC values using the four combinations of information were a) 0.65, b) 0.70, c) 0.71, and d) 0.73. Prediction based on combination b), c), and d) implied a NND of 3. A rule based on c), the most accessible information, is suggested as a simple screening tool. CONCLUSIONS: Readily available clinical information allowed the prediction of assault over 2 years, in a sample of general psychiatric patients with psychosis, with a level of predictive accuracy comparable to that described using more detailed risk assessment tools. The information used in the predictive model was: age, sex, having committed an assault in the last 2 years (self-report) and having used any drug in the last year (self-report).

Predicting time to recall in patients conditionally released from a secure forensic hospital: A survival analysis.

BACKGROUND: The recall of conditionally discharged forensic patients in England is a formal order from the Ministry of Justice under the Mental Health Act (1983) which has the power to revoke conditional release and direct readmission to hospital. Recall has significant implications for the individual and for hospital services, but despite this, little is known about predictors of recall for forensic patients. METHODS: We examined the rate of recall for 101 patients conditionally discharged from medium secure forensic inpatient services between 2007 and 2013. Demographic, clinical, and forensic factors were examined as possible predictors of time to recall using Cox regression survival techniques. RESULTS: Conditionally discharged patients were followed for an average of 811 days, during which 45 (44.5%) were recalled to hospital. Younger age (HR 1.89; 95% CI 1.02-3.49; p = 0.04), non-white ethnicity (HR 3.44; 95% CI 1.45-8.13), substance abuse history (HR 2.52; 95% CI 1.17-5.43), early violence (HR 1.90; 95% CI 1.03-3.50), early childhood maladjustment (HR 1.92; 95% CI 1.01-3.68), treatment with a depot medication (HR 2.17; 95% CI 1.14-4.11), being known to mental health services (HR 3.44; 95% CI 1.06-11.16), and a psychiatric admission prior to the index admission (HR 2.44; 95% CI 1.08-5.52) were significantly associated with a shorter time to recall. Treatment with clozapine reduced the risk of recall to hospital (HR 0.40; 95% CI 0.20-0.79). CONCLUSIONS: Time to recall can be predicted by a range of factors that are readily available to clinical teams. Further research is required to determine if targeted interventions can modify the likelihood or time to recall for conditionally released forensic patients.

A Prospective Cohort Study of Absconsion Incidents in Forensic Psychiatric Settings: Can We Identify Those at High-Risk?

BACKGROUND: Incidents of absconsion in forensic psychiatric units can have potentially serious consequences, yet surprisingly little is known about the characteristics of patients who abscond from these settings. The few previous studies conducted to date have employed retrospective designs, and no attempt has been made to develop an empirically-derived risk assessment scale. In this prospective study, we aimed to identify predictors of absconsion over a two-year period and investigate the feasibility of developing a brief risk assessment scale. METHODS: The study examined a representative sample of 135 patients treated in forensic medium- and low-secure wards. At baseline, demographic, clinical, treatment-related, and offending/behavioural factors were ascertained from electronic medical records and the treating teams. Incidents of absconsion (i.e., failure to return from leave, incidents of escape, and absconding whilst on escorted leave) were assessed at a two-year follow-up. Logistic regression analyses were used to determine the strongest predictors of absconsion which were then weighted according to their ability to discriminate absconders and non-absconders. The predictive utility of a brief risk assessment scale based on these weighted items was evaluated using receiver operator characteristics (ROC). RESULTS: During the two-year follow-up period, 27 patients (20%) absconded, accounting for 56 separate incidents. In multivariate analyses, four factors relating to offending and behaviour emerged as the strongest predictors of absconsion: history of sexual offending, previous absconsion, recent inpatient verbal aggression, and recent inpatient substance use. The weighted risk scale derived from these factors had moderate-to-good predictive accuracy (ROC area under the curve: 0.80; sensitivity: 067; specificity: 0.71), a high negative predictive value (0.91), but a low positive predictive value (0.34). CONCLUSION: Potentially-targetable recent behaviours, such as inpatient verbal aggression and substance use, are strong predictors of absconsion in forensic settings; the absence of these factors may enable clinical teams to identify unnecessarily restricted low-risk individuals.

Clinical characteristics of community forensic mental health services.

OBJECTIVE: Community forensic mental health teams are a new service within the widening range of specialized community mental health services. The characteristics of these novel services are poorly defined. Two commonly described service models in the United Kingdom are the integrated model (forensic specialists working within community mental health teams) and the parallel model (forensic specialists working on a separate specialist team). The study reported here aimed to establish clear definitions of these service models. METHODS: A literature review and a focus group of ten service professionals were conducted to identify candidate characteristics of services in community forensic mental health teams. A total of 31 characteristics were identified and used to prepare the first-round questionnaire for the two rounds of a modified Delphi consultation, which is an expert opinion and consensus method, with a multidisciplinary panel of 32 mental health professionals experienced in community forensic work. RESULTS: Twenty-nine staff (91 percent) completed the two rounds of consultation. Thirteen service characteristics differentiated the integrated and parallel models. Key characteristics of parallel teams included having their own team base, separate referral meetings, a specialist management line, specialist supervision, protected funding, forensic psychology, good links with criminal justice systems, and capped caseloads. Integrated teams were distinguished by their close links with community mental health services and acceptance of more referrals from primary care. CONCLUSIONS: Integrated and parallel models of community forensic mental health teams differ on many service characteristics. Defining these characteristics will help in researching the pros and cons of each model in the treatment and risk management of mentally ill offenders in the community.

The effect of intensive case management on the relatives of patients with severe mental illness.

OBJECTIVE: Relatives play a vital role in caring for patients with severe mental illness but receive inadequate support from psychiatric services. Evidence suggests that although intensive case management is directed primarily at patients, relatives may benefit as well. This study examined whether relatives of patients who were receiving intensive case management had more contact with mental health professionals than relatives of patients who were receiving standard case management. It also examined whether relatives of patients receiving intensive case management appraised caregiving less negatively and experienced less psychological distress than relatives of patients receiving standard case management. METHODS: The sample was drawn from the pool of patients participating in the UK700 randomized controlled trial of intensive case management. Prospective data on contact between case managers and the relatives of 146 patients were collected over a two-year period. At a two-year follow-up assessment, relatives of 116 patients were interviewed with the Experience of Caregiving Inventory and the 12-item General Health Questionnaire. RESULTS: Considerably more relatives of patients receiving intensive case management had contact with a case manager during the study period than relatives of patients receiving standard case management (70 percent compared with 45 percent). However, relatives of patients receiving intensive case management did not appraise caregiving less negatively or experience less psychological distress than relatives of patients who were receiving standard case management. CONCLUSIONS: Reducing case managers' caseloads alone will not guarantee adequate support for relatives. Instead, providing more support will need to be an explicit aim, and staff will require specific additional training to achieve it.

Amnesia for violent offenses: factors underlying memory loss and recovery.

Amnesia for violent offenses is common, but little is known about underlying causes or whether memory can recover. In this study, 50 violent offenders were interviewed with neuropsychological and psychometric measures, to determine the factors that underlie amnesia and the recovery of memory in these cases. The results showed that amnesia for a violent offense was associated with crimes of passion and dissociative symptoms at the time, but not with impaired neuropsychological functioning. Long amnesic gaps were associated with a state of dissociation surrounding the offense and with previous blackouts (whether alcoholic or dissociative). Memory often recovered, either partially or completely, especially where there was a history of blackouts or a lengthy amnesic gap. Brief amnesic gaps were likely to persist, perhaps as a consequence of faulty encoding during a period of extreme emotional arousal (or red-out).

A multisite randomized trial of a cognitive skills program for male mentally disordered offenders: violence and antisocial behavior outcomes.

OBJECTIVE: Despite a large evidence base indicating that cognitive skills programs can reduce reoffending in individuals without mental illness, there have been no randomized controlled trials (RCTs) to determine their effectiveness in mentally disordered offenders (MDOs). In the first RCT of a cognitive skills program for MDOs, we aimed to investigate whether participation in the Reasoning and Rehabilitation (R&R) program reduced violence and antisocial behavior in this population. METHOD: Eighty-four male inpatients with a psychotic disorder and a history of violence were recruited from medium secure forensic hospitals. Participants were randomized to receive the R&R program, consisting of 36 two-hour sessions, or treatment as usual (TAU). Incidents of violence and antisocial behavior (verbal aggression, substance use, and leave violations) were assessed during treatment and at 12-months posttreatment. RESULTS: Relative to the TAU group, incident rates of verbal aggression and leave violations during the treatment period were significantly lower in the R&R group; the effect on verbal aggression was maintained at 12-months posttreatment. Half of those randomized to receive R&R did not complete treatment; post hoc analyses were therefore conducted to compare treatment responses in program completers and noncompleters. After controlling for psychopathic traits, incidents of violence, verbal aggression, and leave violations during treatment were significantly lower in program completers, and there were significant effects of program completion on verbal aggression and substance use at 12-months posttreatment. CONCLUSIONS: R&R leads to a reduction in incidents of antisocial behavior in MDO populations, with potentially greater impact on those who complete treatment.

White matter microstructural abnormalities in the frontal lobe of adults with antisocial personality disorder.

UNLABELLED: Antisocial personality disorder (ASPD) and psychopathy involve significant interpersonal and behavioural impairments. However, little is known about their underlying neurobiology and in particular, abnormalities in white matter (WM) microstructure. A preliminary diffusion tensor magnetic resonance imaging (DT-MRI) study of adult psychopaths employing tractography revealed abnormalities in the right uncinate fasciculus (UF) (Craig et al., 2009), indicating fronto-limbic disconnectivity. However, it is not clear whether WM abnormalities are restricted to this tract or are or more widespread, including other tracts which are involved in connectivity with the frontal lobe. We performed whole brain voxel-based analyses on WM fractional anisotropy (FA) and mean diffusivity (MD) maps acquired with DT-MRI to compare 15 adults with ASPD and healthy age, handedness and IQ-matched controls. Also, within ASPD subjects we related differences in FA and MD to measures of psychopathy. Significant WM FA reduction and MD increases were found respectively in ASPD subjects relative to controls. FA was bilaterally reduced in the genu of corpus callosum while in the right frontal lobe FA reduction was found in the UF, inferior fronto-occipital fasciculus (IFOF), anterior corona radiata and anterior limb and genu of the internal capsule. These differences negatively correlated with measures of psychopathy. Also in the right frontal lobe, increased MD was found in the IFOF and UF, and the corpus callosum and anterior corona radiata. There was a significant positive correlation between MD and psychopathy scores. CONCLUSIONS: The present study confirms a previous report of reduced FA in the UF. Additionally, we report for the first time, FA deficits in tracts involved in interhemispheric as well as frontal lobe connectivity in conjunction with MD increases in the frontal lobe. Hence, we provide evidence of significant WM microstructural abnormalities in frontal brain regions in ASPD and psychopathy.

Using activity data to explore the influence of case-load size on care patterns.

BACKGROUND: A limited case-load size is considered crucial for some forms of intensive case management and many countries have undertaken extensive reorganisation of mental health services to achieve this. However, there has been limited empirical work to explore this specifically. AIMS: To test whether there is a discrete threshold for changes in intensive case management practice determined by case-load size. METHOD: "Virtual" case-load sizes were calculated for patients from their actual contacts over a 2-year period and were compared with the proportions of contacts devoted to medical and non-medical care (as a proxy for a more comprehensive service model). RESULTS: There were 39 025 recordings for 545 patients over 2 years, with a mean rate of contacts per full-time case manager per month of 48 (range 35-60). There was no variation in the proportion of non-medical contacts when case-load sizes were over 1:20 but there was a convincing linear relationship when sizes were between 1:10 and 1:20. CONCLUSIONS: Case-load size between 1:10 and 1:20 does affect the practice of case management. However, there is no support for a paradigm shift in practice at a discrete level.

Violence in women with psychosis in the community: prospective study.

BACKGROUND: Little is known about the determinants of violence in women with psychosis. AIMS: To identify predictors of violence in a community sample of women with chronic psychosis. METHOD: The 2-year prevalence of physical assault was estimated for a sample of 304 women with psychosis. Baseline socio-demographic and clinical factors were used to identify predictors of assault. RESULTS: The 2-year prevalence of assault in the sample was 17%. Assaultive behaviour was associated with previous violence (OR=5.87,95% CI 2.42-14.25), non-violent convictions (OR=2.63,95% CI 1.17-5.93), victimization (OR=2.46, 95% CI1.02-5.93), African-Caribbean ethnicity (OR=2.24,95% CI1.02-4.77), cluster B personality disorder (OR=2.66, 95% CI1.11-6.38) and high levels of unmet need (OR=1.17,95% CI1.01-1.35). An interaction between African-Caribbean ethnicity and cluster B personality disorder was identified in relation to violent outcome. Violent women were found to be more costly to services. CONCLUSIONS: Nearly a fifth of community-dwelling women with chronic psychosis committed assault over a period of 2 years. Six independent risk factors were found to predict violence.

Facial emotion processing in criminal psychopathy. Preliminary functional magnetic resonance imaging study.

BACKGROUND: It has been suggested that people with psychopathic disorders lack empathy because they have deficits in processing distress cues (e.g. fearful facial expressions). AIMS: To investigate brain function when individuals with psychopathy and a control group process facial emotion. METHOD: Using event-related functional magnetic resonance imaging we compared six people scoring > or =25 on the Hare Psychopathy Checklist-Revised and nine non-psychopathic healthy volunteers during an implicit emotion processing task using fearful, happy and neutral faces. RESULTS: The psychopathy group showed significantly less activation than the control group in fusiform and extrastriate cortices when processing both facial emotions. However, emotion type affected response pattern. Both groups increased fusiform and extrastriate cortex activation when processing happy faces compared with neutral faces, but this increase was significantly smaller in the psychopathy group. In contrast, when processing fearful faces compared with neutral faces, the control group showed increased activation but the psychopathy group decreased activation in the fusiform gyrus. CONCLUSIONS: People with psychopathy have biological differences from controls when processing facial emotion, and the pattern of response differs according to emotion type.

Exposure to case management: relationships to patient characteristics and outcome. Report from the UK700 trial.

BACKGROUND: Trials in community psychiatry must balance rigour with generalisability. The UK700 trial failed to find a significant effect on hospitalisation, but its sample population contained significant heterogeneity of exposure to case management in the two groups. AIMS: To test whether patients successfully exposed to a minimum of 12 months' intensive case management over the 2-year follow-up period achieved reduced hospitalisation. METHOD: Of 679 participants with hospitalisation data, 84 were identified as having < 12 months' exposure owing to prolonged hospitalisation, imprisonment or a combination of the two. These patients were excluded and outcomes tested for the remaining 595 patients. RESULTS: Overall reduced case-load size did not reduce hospitalisation or treatment costs over 2 years despite elimination of outliers. Age, previous hospitalisation and source of recruitment to the study all correlated with outcome. CONCLUSIONS: Case-load reduction is not in itself enough to reduce the need for hospital care in psychosis. Baseline patient characteristics (in particular length of previous hospitalisation and recruitment from in-patient care) have a significant influence and should be allowed for in power calculations. Identifying the optimal clinical profile for patients likely to benefit from intensive case management remains a pressing need for further studies.

Impact of comorbid personality disorder on violence in psychosis: report from the UK700 trial.

BACKGROUND: The impact of comorbid personality disorder on the occurrence of violence in psychosis has not been fully explored. AIMS: To examine the association between comorbid personality disorder and violence in community-dwelling patients with psychosis. METHOD: A total of 670 patients with established psychotic illness were screened for comorbid personality disorder. Physical assault was measured from multiple data sources over the subsequent 2 years. Logistic regression was used to assess whether the presence of comorbid personality disorder predicted violence in the sample. RESULTS: A total of 186 patients (28%) were rated as having a comorbid personality disorder. Patients with comorbid personality disorder were significantly more likely to behave violently over the 2-year period of the trial (adjusted odds ratio=1.71, 95% CI 1.05-2.79). CONCLUSIONS: Comorbid personality disorder is independently associated with an increased risk of violent behaviour in psychosis.