The relationship between suicide and violence in schizophrenia: analysis of the Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) dataset

Background

Suicide and violence often co-occur in the general population as well as in mentally ill individuals. Few studies, however, have assessed whether these suicidal behaviors are predictive of violence risk in mental illness.

Aims

The aim of this study is to investigate whether suicidal behaviors, including suicidal ideation, threats, and attempts, are significantly associated with increased violence risk in individuals with schizophrenia.

Method

Data for these analyses were obtained from the Clinical Antipsychotic Trials of Intervention Effectiveness (CATIE) trial, a randomized controlled trial of antipsychotic medication in 1460 adults with schizophrenia. Univariate Cox regression analyses were used to calculate hazard ratios (HRs) for suicidal ideation, threats, and attempts. Multivariate analyses were conducted to adjust for common confounding factors, including: age, alcohol or drug misuse, major depression, antisocial personality disorder, depression, hostility, positive symptom, and poor impulse control scores. Tests of discrimination, calibration, and reclassification assessed the incremental predictive validity of suicidal behaviors for the prediction of violence risk.

Results

Suicidal threats and attempts were significantly associated with violence in both males and females with schizophrenia with little change following adjustment for common confounders. Only suicidal threats, however, were associated with a significant increase in incremental validity beyond age, diagnosis with a comorbid substance use disorder, and recent violent behavior.

Conclusions

Suicidal threats are independently associated with violence risk in both males and females with schizophrenia, and may improve violence risk prediction.

Exploring the role and patterns of developmental trauma in substance using offenders

 The thesis explored the relationship between developmental trauma, substance use and offending behaviour. While a lack of sufficient power did not allow patterns and trajectories to emerge, it was demonstrated that developmental trauma was experienced disproportionally more in offender and substance using populations. Further, the study proposed the utility of the Good Lives Model in developing holistic treatment plans that encompass primary goods identified by these individuals.

Sober assessment of the link between substance abuse and crime-eliminating drug and alcohol use from the sentencing calculus

The relevance of drug and alcohol involvement to sentencing law and practice is one of the most perplexing and unsettled areas of sentencing law and practice.1 It is also one of the most important issues in the criminal justice system. Most crimes are committed by offenders who are substance involved, and nearly half of all crimes that are committed are done so by offenders who are intoxicated at the time of the offense. Substance involved individuals are grossly over-represented in the criminal courts. Addiction and intoxication impair sound judgment, and hence, it intuitively appears that intoxicated offenders are less culpable for their crimes. Moreover, there is often a sense that addiction and intoxication causes aberrant behavior and that curing the substance involvement will lead to more prudent (law-abiding) conduct.

Problem gambling, familial violence and alcohol misuse: exploring the triad for treatment-seekers

Research into the co-occurrence of problem gambling, familial violence, and alcohol misuse is limited. While these issues have been considered in combination (i.e.violence and alcohol misuse, problem gambling and alcohol misuse, problem gambling and violence), within Australia, in particular, there has been an absence of exploration of this triad. The current research attempts to fill the gap in the literature, to establish whether there is any difference between problem gamblers with co-occurring violence and problem gamblers who had not experienced violence in terms of their alcohol misuse and gambling behaviours. Interviews were conducted with 81 treatment- seeking problem gamblers to explore how a history of victimization only, perpetration only, victimization and perpetration, or no history of family violence impacted on gambling behaviours (including baseline Victorian Gambling Screen), as well as alcohol misuse. Results indicated that in this treatment-seeking sample there were no significant differences for gambling behaviours or alcohol misuse between problem gamblers with issues of violence and those without. Males demonstrated (on average) a greater tendency toward hazardous drinking or disordered alcohol use. It would be prudent for treatment services to routinely examine problem gamblers’ history of violence and alcohol misuse until research verifies the nature of this triad

Neuroimaging of the human brain in adolescent substance users

Included among the topics: Cognitive development, learning, and drug use. Neurobiology of the action of drugs of abuse. Findings in adolescents with substance dependence based on neuroimaging tests.

Predictors of postnatal mother-infant bonding: the role of antenatal bonding, maternal substance use and mental health

The emotional bond that a mother feels towards her baby is critical to social, emotional and cognitive development. Maternal health and wellbeing through pregnancy and antenatal bonding also play a key role in determining bonding postnatally, but the extent to which these relationships may be disrupted by poor mental health or substance use is unclear. This study aimed to examine the extent to which mother-fetal bonding, substance use and mental health through pregnancy predicted postnatal mother-infant bonding at 8 weeks. Participants were 372 women recruited from three metropolitan hospitals in Australia. Data was collected during trimesters one, two and three of pregnancy and 8 weeks postnatal using the Maternal Antenatal Attachment Scale (MAAS), Maternal Postnatal Attachment Scale (MPAS), the Edinburgh Antenatal and Postnatal Depression Scale (EPDS), the Depression and Anxiety Scales (DASS-21), frequency and quantity of substance use (caffeine, alcohol and tobacco) as well as a range of demographic and postnatal information. Higher antenatal bonding predicted higher postnatal bonding at all pregnancy time-points in a fully adjusted regression model. Maternal depressive symptoms in trimesters two and three and stress in trimester two were inversely related to poorer mother-infant bonding 8 weeks postnatally. This study extends previous work on the mother’s felt bond to her developing child by drawing on a large sample of women and documenting the pattern of this bond at three time points in pregnancy and at 8 weeks postnatally. Utilising multiple antenatal waves allowed precision in isolating the relationships in pregnancy and at key intervention points. Investigating methods to enhance bonding and intervene in pregnancy is needed. It is also important to assess maternal mental health through pregnancy.

Self-reported substance use and intervention experience of prisoners with intellectual disability

Background It has been increasingly recognised that many offenders with intellectual disability (ID) have substance use issues, yet surprisingly little is known about the treatment needs of this population.Method In order to explore pre-sentence patterns of substance use, the role of substance use in offending behaviour, and experience with substance treatment programs, interviews were conducted with 33 sentenced prisoners.Results The findings of this study identified hazardous and harmful rates of alcohol use and high rates of substance use among prisoners with ID. Most participants reported being intoxicated at the time of their offence. Participants experience of substance intervention programs varied. Although many reported a positive experience, others reported significant participation barriers.Conclusions This study supports the increasingly recognised link between substance use and offending behaviour among prisoners with ID and highlights the importance of tailored and coordinated treatment initiatives, both within corrections facilities and the community.

Persistence and subtype stability of ADHD among substance use disorder treatment seekers

OBJECTIVE: To examine ADHD symptom persistence and subtype stability among substance use disorder (SUD) treatment seekers. METHOD: In all, 1,276 adult SUD treatment seekers were assessed for childhood and adult ADHD using Conners' Adult ADHD Diagnostic Interview for Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM-IV; CAADID). A total of 290 (22.7%) participants met CAADID criteria for childhood ADHD and comprise the current study sample. RESULTS: Childhood ADHD persisted into adulthood in 72.8% (n = 211) of cases. ADHD persistence was significantly associated with a family history of ADHD, and the presence of conduct disorder and antisocial personality disorder. The combined subtype was the most stable into adulthood (78.6%) and this stability was significantly associated with conduct disorder and past treatment of ADHD. CONCLUSION: ADHD is highly prevalent and persistent among SUD treatment seekers and is associated with the more severe phenotype that is also less likely to remit. Routine screening and follow-up assessment for ADHD is indicated to enhance treatment management and outcomes.