RESUMO
BACKGROUND: Cannabis is the most prevalent illicit substance among people with psychosis, and its use is associated with poorer clinical and social outcomes. However, so far, there has been limited evidence that any treatment is effective for reducing use. Contingency management (CM) is an incentive-based intervention for substance misuse that has a substantial evidence base across a range of substances and cohorts. However, to date there have been no randomised controlled trials (RCTs) of CM as a treatment for cannabis use specifically in psychosis. OBJECTIVE: To conduct a RCT investigating the clinical effectiveness and cost-effectiveness of CM in reducing cannabis use among Early Intervention in Psychosis (EIP) service users. DESIGN: The CIRCLE (Contingency Intervention for Reduction of Cannabis in Early Psychosis) trial was a rater-blinded, multicentre RCT with two arms. Participants were randomised 1 : 1 to either an CM arm, in which participants received CM for cannabis use alongside an optimised treatment-as-usual programme including structured psychoeducation, or a control arm in which participants received the treatment as usual only. SETTING: EIP services across the Midlands and the south-east of England. PARTICIPANTS: The main eligibility criteria were EIP service users with a history of psychosis, aged 18-36 years, and having used cannabis at least once per week during 12 of the previous 24 weeks. INTERVENTION: The CM intervention offered financial incentives (i.e. shopping vouchers) for cannabis abstinence over 12 once-weekly sessions, confirmed using urinalysis. The maximum value in vouchers that participants could receive was £240. MAIN OUTCOME MEASURES: The main outcome was time to relapse, operationalised as admission to an acute mental health service or hospital. The primary outcome was assessed at 18 months post inclusion using electronic patient records. Secondary outcomes assessed the clinical effectiveness and cost-effectiveness of the intervention, for which data were collected at 3 and 18 months. RESULTS: A total of 278 participants were randomised to the CM arm and 273 were randomised to the control arm. In total, 530 (96%) participants were followed up for the primary outcome. There was no significant difference in time to admission between trial arms by 18 months following consent (hazard ratio 1.03, 95% confidence interval 0.76 to 1.40). There were no statistically significant differences in most secondary outcomes, including cannabis use, at either follow-up assessment. There were 58 serious adverse events, comprising 52 inpatient episodes, five deaths and one arrest. LIMITATIONS: Participant retention was low at 18 months, limiting the assessment of secondary outcomes. A different CM intervention design or reward level may have been effective. CONCLUSIONS: The CM intervention did not appear to be effective in reducing cannabis use and acute relapse among people with early psychosis and problematic cannabis use. FUTURE WORK: Cannabis use is still a significant clinical concern in this population. A pressing need remains to identify suitable treatments. A wider perspective on the social circumstances of young people with psychosis may be needed for a successful intervention to be found. TRIAL REGISTRATION: Current Controlled Trials ISRCTN33576045. FUNDING: This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 23, No. 45. See the NIHR Journals Library website for further project information.
A large proportion of people with psychosis use cannabis, despite the negative impact that it has on their recovery. So far, a clearly effective way of helping young people in the early stages of psychosis to cut down their cannabis use has not been found. The CIRCLE trial investigated if an approach known as contingency management (CM) would be beneficial for this group. This approach involves offering voucher rewards for not using cannabis. It has been effective in addressing drug use problems in general, but there is not much evidence about its effects on cannabis use in those with psychosis. A total of 551 service users with psychosis who used cannabis agreed to enter the trial. Half of the sample group was chosen by a chance method to receive CM. The other half formed a comparison group. The CM group received shopping vouchers if urine samples showed that they had not used cannabis for the previous week, measured over 12 weekly sessions. Participants could obtain £240-worth of vouchers if they did not use cannabis during the treatment period. The participants in both groups were also offered a six-session psychoeducation programme about the pros and cons of cannabis use and ways to reduce use of it. The main comparison in the trial was the average length of time in each group before a relapse of psychosis occurred, which was recorded for each participant over 18 months after they joined the trial. The results found no difference between the two trial groups in this measure. Furthermore, there were no differences found between the groups in terms of the levels of cannabis use, clinical symptoms, or engagement with work or education. However, a cost-effectiveness analysis found an 85% chance of CM being more effective than the treatment-as-usual psychoeducation package, which appears to be because of the lower use of inpatient services by those receiving CM. However, it is difficult to understand why this was, because there was no drop in cannabis use. The results suggest that CM is unlikely to be clinically effective and that alternative treatments are still needed.
Assuntos
Terapia Comportamental/economia , Cannabis/efeitos adversos , Transtornos Psicóticos/terapia , Recidiva , Adolescente , Adulto , Análise Custo-Benefício/economia , Inglaterra , Feminino , Humanos , Masculino , Motivação , Transtornos Relacionados ao Uso de Substâncias/terapia , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: Cannabis is the most commonly used illicit substance amongst people with psychosis. Continued cannabis use following the onset of psychosis is associated with poorer functional and clinical outcomes. However, finding effective ways of intervening has been very challenging. We examined the clinical and cost-effectiveness of adjunctive contingency management (CM), which involves incentives for abstinence from cannabis use, in people with a recent diagnosis of psychosis. METHODS: CIRCLE was a pragmatic multi-centre randomised controlled trial. Participants were recruited via Early Intervention in Psychosis (EIP) services across the Midlands and South East of England. They had had at least one episode of clinically diagnosed psychosis (affective or non-affective); were aged 18 to 36; reported cannabis use in at least 12 out of the previous 24 weeks; and were not currently receiving treatment for cannabis misuse, or subject to a legal requirement for cannabis testing. Participants were randomised via a secure web-based service 1:1 to either an experimental arm, involving 12 weeks of CM plus a six-session psychoeducation package, or a control arm receiving the psychoeducation package only. The total potential voucher reward in the CM intervention was £240. The primary outcome was time to acute psychiatric care, operationalised as admission to an acute mental health service (including community alternatives to admission). Primary outcome data were collected from patient records at 18 months post-consent by assessors masked to allocation. The trial was registered with the ISRCTN registry, number ISRCTN33576045. RESULTS: Five hundred fifty-one participants were recruited between June 2012 and April 2016. Primary outcome data were obtained for 272 (98%) in the CM (experimental) group and 259 (95%) in the control group. There was no statistically significant difference in time to acute psychiatric care (the primary outcome) (HR 1.03, 95% CI 0.76, 1.40) between groups. By 18 months, 90 (33%) of participants in the CM group, and 85 (30%) of the control groups had been admitted at least once to an acute psychiatric service. Amongst those who had experienced an acute psychiatric admission, the median time to admission was 196 days (IQR 82, 364) in the CM group and 245 days (IQR 99, 382) in the control group. Cost-effectiveness analyses suggest that there is an 81% likelihood that the intervention was cost-effective, mainly resulting from higher mean inpatient costs for the control group compared with the CM group; however, the cost difference between groups was not statistically significant. There were 58 adverse events, 27 in the CM group and 31 in the control group. CONCLUSIONS: Overall, these results suggest that CM is not an effective intervention for improving the time to acute psychiatric admission or reducing cannabis use in psychosis, at least at the level of voucher reward offered.
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Terapia Comportamental/métodos , Cannabis , Transtornos Psicóticos/terapia , Transtornos Relacionados ao Uso de Substâncias/reabilitação , Adolescente , Adulto , Terapia Comportamental/economia , Cannabis/efeitos adversos , Condicionamento Operante , Análise Custo-Benefício , Inglaterra , Feminino , Humanos , Masculino , Motivação , Adulto JovemRESUMO
BACKGROUND: Around 35-45 % of people in contact with services for a first episode of psychosis are using cannabis. Cannabis use is associated with delays in remission, poorer clinical outcomes, significant increases in the risk of relapse, and lower engagement in work or education. While there is a clear need for effective interventions, so far only very limited benefits have been achieved from psychological interventions. Contingency management (CM) is a behavioural intervention in which specified desired behavioural change is reinforced through financial rewards. CM is now recognised to have a substantial evidence base in some contexts and its adoption in the UK is advocated by the National Institute for Health and Care Excellence (NICE) guidance as a treatment for substance or alcohol misuse. However, there is currently little published data testing its effectiveness for reducing cannabis use in early psychosis. METHODS: CIRCLE is a two-arm, rater-blinded randomised controlled trial (RCT) investigating the clinical and cost-effectiveness of a CM intervention for reducing cannabis use among young people receiving treatment from UK Early Intervention in Psychosis (EIP) services. EIP service users (n = 544) with a recent history of cannabis use will be recruited. The experimental group will receive 12 once-weekly CM sessions, and a voucher reward if urinalysis shows that they have not used cannabis in the previous week. Both the experimental and the control groups will be offered an Optimised Treatment as Usual (OTAU) psychoeducational package targeting cannabis use. Assessment interviews will be performed at consent, at 3 months, and at 18 months. The primary outcome is time to relapse, defined as admission to an acute mental health service. Secondary outcomes include proportion of cannabis-free urine samples during the intervention period, severity of positive psychotic symptoms, quality-adjusted life years, and engagement in work or education. DISCUSSION: CIRCLE is a RCT of CM for cannabis use in young people with a recent history of psychosis (EIP service users) and recent cannabis use. It is designed to investigate whether the intervention is a clinically and cost-effective treatment for cannabis use. It is intended to inform future treatment delivery, particularly in EIP settings. TRIAL REGISTRATION: ISRCTN33576045 : doi 10.1186/ISRCTN33576045 , registered on 28 November 2011.
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Cannabis/efeitos adversos , Protocolos Clínicos , Análise Custo-Benefício , Humanos , Transtornos Psicóticos/terapia , Recidiva , Tamanho da AmostraRESUMO
This paper provides an overview of a conceptual model that integrates theories of social ecology, minority stress, and community readiness to better understand risk for and outcomes of intimate partner violence (IPV) among LGBTQ+ college students. Additionally, online survey data was collected from a sample of 202 LGBTQ+ students enrolled in 119 colleges across the United States to provide preliminary data on some aspects of the proposed model. Results suggested that students generally thought their campuses were low in readiness to address IPV; that is, students felt that their campuses could do more to address IPV and provide IPV services specific to LGBTQ+ college students. Perceptions of greater campus readiness to address IPV among LGBTQ+ college students was significantly and positively related to a more favorable LGBTQ+ campus climate and a greater sense of campus community. Additionally, IPV victims were more likely to perceive higher levels of campus community readiness than non-IPV victims. There was no association between IPV perpetration and perceptions of campus community readiness. Greater sense of community was marginally and inversely related to IPV victimization and perpetration. Sense of community and LGBTQ+ campus climate also varied to some extent as a function of region of the country and type of institution. Implications for further development and refinement of the conceptual model, as well as future research applying this model to better understand IPV among sexual minority students are discussed.
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Atitude , Pesquisa Empírica , Violência por Parceiro Íntimo/psicologia , Instituições Acadêmicas , Minorias Sexuais e de Gênero/psicologia , Estudantes/psicologia , Adolescente , Integração Comunitária , Vítimas de Crime/psicologia , Feminino , Humanos , Violência por Parceiro Íntimo/prevenção & controle , Masculino , Modelos Psicológicos , Projetos Piloto , Conformidade Social , Fatores Sociológicos , Inquéritos e Questionários , Estados Unidos , Adulto JovemRESUMO
OBJECTIVE: To review the evidence on the efficacy of different types of existential therapies: a family of psychological interventions that draw on themes from existential philosophy to help clients address such issues in their lives as meaning and death anxiety. METHOD: Relevant electronic databases, journals, and reference lists were searched for eligible studies. Effects on meaning, psychopathology (anxiety and depression), self-efficacy, and physical well-being were extracted from each publication or obtained directly from its authors. All types of existential therapy for adult samples were included. Weighted pooled mean effects were calculated and analyses performed assuming fixed-effects model. RESULTS: Twenty-one eligible randomized controlled trials of existential therapy were found, from which 15 studies with unique data were included, comprising a total of 1,792 participants. Meaning therapies (n = 6 studies) showed large effects on positive meaning in life immediately postintervention (d = 0.65) and at follow-up (d = 0.57), and had moderate effects on psychopathology (d = 0.47) and self-efficacy (d = 0.48) at postintervention; they did not have significant effects on self-reported physical well-being (n = 1 study). Supportive-expressive therapy (n = 5) had small effects at posttreatment and follow-up on psychopathology (d = 0.20, 0.18, respectively); effects on self-efficacy and self-reported physical well-being were not significant (n = 1 and n = 4, respectively). Experiential-existential (n = 2) and cognitive-existential therapies (n = 1) had no significant effects. CONCLUSION: Despite the small number and low quality of studies, some existential therapies appear beneficial for certain populations. We found particular support for structured interventions incorporating psychoeducation, exercises, and discussing meaning in life directly and positively with physically ill patients. It is important to study more precisely which existential intervention works the best for which individual client.
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Existencialismo/psicologia , Transtornos Mentais/psicologia , Transtornos Mentais/terapia , Terapia Psicanalítica/métodos , Adulto , Humanos , Psicoterapia de Grupo/métodos , Ensaios Clínicos Controlados Aleatórios como Assunto , Autorrelato , Resultado do TratamentoRESUMO
OBJECTIVE: To explore the role of specialist outpatient eating disorders services and investigate how direct access to these affects rates of referral, admissions for inpatient treatment, and continuity of care. METHOD: Services beyond primary care in Greater London retrospectively identified adolescents who presented with an eating disorder over a 2-year period. Data concerning service use were collected from clinical casenotes. RESULTS: In areas where specialist outpatient services were available, 2-3 times more cases were identified than in areas without such services. Where initial outpatient treatment was in specialist rather than nonspecialist services, there was a significantly lower rate of admission for inpatient treatment and considerably higher consistency of care. DISCUSSION: Developing specialist outpatient services with direct access from primary care is likely to lead to improvements in treatment and reduce overall costs.