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1.
BJPsych Open ; 10(3): e110, 2024 May 10.
Article in English | MEDLINE | ID: mdl-38725352

ABSTRACT

BACKGROUND: Sexually transmitted infections (STIs), along with sexual health and behaviour, have received little attention in schizophrenia patients. AIMS: To systematically review and meta-analytically characterise the prevalence of STIs and sexual risk behaviours among schizophrenia patients. METHOD: Web of Science, PubMed, BIOSIS, KCI-Korean Journal Database, MEDLINE, Russian Science Citation Index, SciELO and Cochrane Central Register were systematically searched from inception to 6 July 2023. Studies reporting on the prevalence or odds ratio of any STI or any outcome related to sexual risk behaviours among schizophrenia samples were included. PRISMA/MOOSE-compliant (CRD42023443602) random-effects meta-analyses were used for the selected outcomes. Q-statistics, I2 index, sensitivity analyses and meta-regressions were used. Study quality and publication bias were assessed. RESULTS: Forty-eight studies (N = 2 459 456) reporting on STI prevalence (including 15 allowing for calculation of an odds ratio) and 33 studies (N = 4255) reporting on sexual risk behaviours were included. Schizophrenia samples showed a high prevalence of STIs and higher risks of HIV (odds ratio = 2.11; 95% CI 1.23-3.63), hepatitis C virus (HCV, odds ratio = 4.54; 95% CI 2.15-961) and hepatitis B virus (HBV; odds ratio = 2.42; 95% CI 1.95-3.01) infections than healthy controls. HIV prevalence was higher in Africa compared with other continents and in in-patient (rather than out-patient) settings. Finally, 37.7% (95% CI 31.5-44.4%) of patients were sexually active; 35.0% (95% CI 6.6-59.3%) reported consistent condom use, and 55.3% (95% CI 25.0-82.4%) maintained unprotected sexual relationships. CONCLUSIONS: Schizophrenia patients have high prevalence of STIs, with several-fold increased risks of HIV, HBV and HCV infection compared with the general population. Sexual health must be considered as an integral component of care.

2.
BJPsych Bull ; : 1-7, 2024 May 29.
Article in English | MEDLINE | ID: mdl-38807570

ABSTRACT

BACKGROUND: Schizophreniform disorders tend to have an early onset. Early intervention in psychosis (EIP) services aim to provide early treatment, reduce long-term morbidity and improve social functioning. In 2016, changes to mental health policy in England mandated that the primarily youth-focused model should be extended to an ageless one, to prevent ageism; however, this was without strong research evidence. AIMS AND METHOD: An inner-city London EIP service compared sociodemographic and clinical factors between the under-35 years and over-35 years caseload cohorts utilising the EIP package following the implementation of the ageless policy. RESULTS: Both groups received similar care, despite the younger group having significantly more clinical morbidity and needs. CLINICAL IMPLICATIONS: Our results may indicate that service provisions are being driven by policy rather than clinical needs, potentially diverting resources from younger patients. These findings have important implications for future provision of EIP services and would benefit from further exploration.

3.
Psychol Med ; : 1-10, 2024 May 09.
Article in English | MEDLINE | ID: mdl-38721774

ABSTRACT

BACKGROUND: Timely outpatient follow-up and readmission after discharge are common quality indicators in psychiatric care, but their association varies in previous research. We aimed to examine whether the impact of outpatient follow-up and other factors on readmission risk evolves over time in people with non-affective psychotic disorder (NAP). METHODS: The Finnish Quality of Care Register includes all people diagnosed with NAP since January 2010. Here, we followed patients with a hospital discharge between 2017 and 2021 until readmission, death, or up to 365 days. Time of the first outpatient follow-up appointment, length of stay (LOS), number of previous hospitalizations, psychosis diagnosis, substance use disorder (SUD), residential status, economic activity, gender, age, year, and region were included. Follow-up time was divided into five periods: week 1, weeks 2-4, weeks 5-13, weeks 14-25, and weeks 26-52, and each period was analyzed separately with Cox regression. RESULTS: Of the 29 858 discharged individuals, 54.1% had an outpatient follow-up within a week. A total of 10 623 (35.6%) individuals were readmitted. Short LOS increased the readmission risk in the first four weeks, whereas lack of outpatient follow-up raised the risk (adjusted HRs between 1.15 (95% CI 1.04-1.26) and 1.53 (1.37-1.71) in weeks 5-52. The number of previous hospitalizations remained a consistent risk factor throughout the follow-up, while SUD increased risk after 4 weeks and living without family after 13 weeks. CONCLUSIONS: Risk factors of readmission vary over time. These temporal patterns must be considered when developing outpatient treatment programs.

4.
Br J Psychiatry ; : 1-6, 2024 Apr 18.
Article in English | MEDLINE | ID: mdl-38634312

ABSTRACT

BACKGROUND: Elevated risk of psychosis for ethnic minority groups has generally been shown to be mitigated by high ethnic density. However, past survey studies examining UK Pakistani populations have shown an absence of protective ethnic density effects, which is not observed in other South Asian groups. AIMS: To assess the ethnic density effect at a local neighbourhood level, in the UK Pakistani population in East Lancashire. METHOD: Data was collected by the East Lancashire Early Intervention Service, identifying all cases of first episode psychosis (FEP) within their catchment area between 2012 and 2020. Multilevel Poisson regression analyses were used to compare incidence rates between Pakistani and White majority groups, while controlling for age, gender and area-level deprivation. The ethnic density effect was also examined by comparing incidence rates across high and low density areas. RESULTS: A total of 455 cases of FEP (364 White, 91 Pakistani) were identified. The Pakistani group had a higher incidence of FEP compared to the White majority population. A clear effect of ethnic density on rates of FEP was shown, with those in low density areas having higher incidence rates compared to the White majority, whereas incidence rates in high density areas did not significantly differ. Within the Pakistani group, a dose-response effect was also observed, with risk of FEP increasing incrementally as ethnic density decreased. CONCLUSIONS: Higher ethnic density related to lower risk of FEP within the Pakistani population in East Lancashire, highlighting the impact of local social context on psychosis incidence.

5.
Br J Psychiatry ; 224(5): 147-149, 2024 May.
Article in English | MEDLINE | ID: mdl-38652062

ABSTRACT

Evidence shows that talking with patients about psychotic experiences can be beneficial. The key question is therefore: which psychological methods can help patients most? This editorial presents ten principles for the design and development of effective psychological treatments. These principles are perceptible characteristics of successful interventions.


Subject(s)
Psychotherapy , Psychotic Disorders , Humans , Psychotic Disorders/therapy , Psychotic Disorders/psychology , Psychotherapy/methods
6.
Br J Psychiatry ; 224(6): 237-244, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38584319

ABSTRACT

BACKGROUND: Multimorbidity, the presence of two or more health conditions, has been identified as a possible risk factor for clinical dementia. It is unclear whether this is due to worsening brain health and underlying neuropathology, or other factors. In some cases, conditions may reflect the same disease process as dementia (e.g. Parkinson's disease, vascular disease), in others, conditions may reflect a prodromal stage of dementia (e.g. depression, anxiety and psychosis). AIMS: To assess whether multimorbidity in later life was associated with more severe dementia-related neuropathology at autopsy. METHOD: We examined ante-mortem and autopsy data from 767 brain tissue donors from the UK, identifying physical multimorbidity in later life and specific brain-related conditions. We assessed associations between these purported risk factors and dementia-related neuropathological changes at autopsy (Alzheimer's-disease related neuropathology, Lewy body pathology, cerebrovascular disease and limbic-predominant age-related TDP-43 encephalopathy) with logistic models. RESULTS: Physical multimorbidity was not associated with greater dementia-related neuropathological changes. In the presence of physical multimorbidity, clinical dementia was less likely to be associated with Alzheimer's disease pathology. Conversely, conditions which may be clinical or prodromal manifestations of dementia-related neuropathology (Parkinson's disease, cerebrovascular disease, depression and other psychiatric conditions) were associated with dementia and neuropathological changes. CONCLUSIONS: Physical multimorbidity alone is not associated with greater dementia-related neuropathological change; inappropriate inclusion of brain-related conditions in multimorbidity measures and misdiagnosis of neurodegenerative dementia may better explain increased rates of clinical dementia in multimorbidity.


Subject(s)
Dementia , Multimorbidity , Humans , Male , Aged , Female , Dementia/epidemiology , Dementia/pathology , Aged, 80 and over , Brain/pathology , United Kingdom/epidemiology , Mental Disorders/epidemiology , Mental Disorders/pathology , Cerebrovascular Disorders/epidemiology , Cerebrovascular Disorders/pathology , Autopsy , Alzheimer Disease/pathology , Alzheimer Disease/epidemiology , Risk Factors , Middle Aged , Diagnosis, Differential
7.
BJPsych Bull ; : 1-6, 2024 Apr 19.
Article in English | MEDLINE | ID: mdl-38639203

ABSTRACT

AIMS AND METHOD: Our team of core and higher psychiatry trainees aimed to improve secondary mental health service detection of and response to gender-based violence (GBV) in South East London. We audited home treatment team (HTT), drug and alcohol (D&A) service and in-patient ward clinical records (n = 90) for female and non-binary patients. We implemented brief, cost-neutral staff engagement and education interventions at service, borough and trust levels before re-auditing (n = 86), completing a plan-do-study-act cycle. RESULTS: Documented enquiry about exposure to GBV increased by 30% (HTT), 15% (ward) and 7% (D&A), post-intervention. We identified staff training needs and support for improving GBV care. Up to 56% of records identified psychiatric symptoms related to GBV exposure. CLINICAL IMPLICATIONS: Moves to make mental healthcare more trauma-informed rely on services first being supportive environments for enquiry, disclosure and response to traumatic stressors. Our collaborative approach across clinical services increased GBV enquiry and documentation. The quality of response is more difficult to measure and requires concerted attention.

8.
Schizophr Res ; 268: 193-204, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38493023

ABSTRACT

BACKGROUND: There is a relative lack of research evaluating the outcomes when treatment guidelines or algorithms for psychotic disorders are followed. This systematic review and meta-analysis determined the response rates to antipsychotic medications at different stages of these algorithms and whether these response rates differ in first episode cohorts. METHODS: Data sources: A systematic search strategy was conducted across four databases PubMed, EMBASE, PsycINFO (Ovid) and CINAHL. Studies that had sequential trials of different antipsychotic medications were included. A meta-analysis of proportions was performed using random effects models and sub-group analysis in first episode psychosis studies. RESULTS: Of the 4078 unique articles screened, fourteen articles, from nine unique studies, were eligible and included 2522 participants. The proportion who experienced a response to any antipsychotic in the first stage of an algorithm was 0.53 (95 % C.I.:0.38,0.68) and this decreased to 0.26 (95 % C.I.:0.15,0.39) in the second stage. When clozapine was used in the third stage, the proportion that achieved a response was 0.43 (95 % C.I. 0.19, 0.69) compared to 0.26 (95 % C.I.:0.05,0.54) if a different antipsychotic was used. Four studies included 907 participants with a first episode of psychosis and the proportions that achieved a response were: 1st stage: 0.63 (95 % C.I.: 0.45, 0.79); 2nd stage: 0.34 (95 % C.I.:0.16,0.55); clozapine 3rd stage: 0.45 (95 % C.I.:0.0,0.97), different antipsychotic 3rd stage: 0.15 (95 % C.I.,0.01,0.37). DISCUSSION: These findings support the recommendation to have a trial of clozapine after two other antipsychotic medications have been found to be ineffective.


Subject(s)
Algorithms , Antipsychotic Agents , Psychotic Disorders , Humans , Antipsychotic Agents/therapeutic use , Psychotic Disorders/drug therapy , Practice Guidelines as Topic/standards
9.
Asian J Psychiatr ; 93: 103959, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38342034

ABSTRACT

BACKGROUND: Yoga is gradually being explored as a potential complementary intervention in addition to psychiatric drugs for schizophrenia. However, there are conflicts on the efficacy of yoga for schizophrenia. This meta-analysis was aimed to evaluate the association of yoga intervention with reductions on clinical symptoms and improvements in quality of life (QoL) as well as social functioning among schizophrenia. METHOD: Systematic literature search was undertaken to identify all RCTs that compared yoga with active or passive controls for patients with schizophrenia from inception to July 2023. The outcomes were measurements of positive symptoms, negative symptoms, QoL and social functioning. Random-effects models were performed to calculate the effect sizes in the standardized mean differences reporting as Hedges' s g statistic. RESULTS: 19 studies enrolling 1274 participants with schizophrenia were included. Yoga had a medium effect on positive symptoms in the short term (Hedges's g = 0.31) and small effect in the long term (Hedges's g = 0.18). Medium significant effects were also found on negative symptoms in both the short term (Hedges's g = 0.44) and the long term (Hedges's g = 0.35). Yoga had a significant impact on improving both total QoL (Hedges's g = 0.34) and social functioning (Hedges's g = 0.45) with medium effect sizes. CONCLUSIONS: Yoga was associated with significant reductions on negative and positive symptoms, and significant improvements in QoL as well as social functioning in patients with schizophrenia. Future research should explore the long-term efficacy of yoga for schizophrenia, encompassing more diverse populations.


Subject(s)
Schizophrenia , Yoga , Humans , Quality of Life , Schizophrenia/therapy , Social Interaction
10.
Br J Psychiatry ; 224(4): 122-126, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38311574

ABSTRACT

BACKGROUND: Despite its significance, ensuring continuity of care demands substantial resources, which might not be readily accessible in many public healthcare systems. Studies indicate that continuity of care remains uncertain in numerous healthcare systems. AIMS: This study aimed to assess the effectiveness of a continuity-of-care model for patients with severe mental illness (SMI), providing seamless treatment from discharge from a closed ward to subsequent psychiatric, psychological and rehabilitation services. METHOD: Data from patients discharged before (1 January to 31 December 2018) and after (1 June 2021 to 31 May 2022) full implementation of the model were analysed and compared in terms of average duration of hospital stay, emergency department visits within 90 days of discharge, readmission rate within a year post-discharge and initiation of rehabilitation process. RESULTS: In the post-implementation period (n = 482), the average admission time significantly decreased from 30.51 ± 29.72 to 26.77 ± 27.89 days, compared with the pre-implementation period (n = 403) (P = 0.029). Emergency department visits within 90 days following discharge decreased from 38.70 to 26.35% of discharged patients (P < 0.001). The rate of readmission decreased from 50.9 to 44.0% (P = 0.041) for one readmission and from 28.3 to 22.0% (P = 0.032) for two readmissions in the year following discharge. Additionally, the proportion of patients entering formal rehabilitation increased from 7.94 to 12.03% (P = 0.044). CONCLUSIONS: This study highlights the effectiveness of a continuity-of-care model spearheaded by senior psychiatrists and involving paramedical personnel. These findings underscore the significant potential of the model to substantially enhance mental health services and outcomes. Moreover, they emphasise its relevance for patients, clinicians and policy makers.


Subject(s)
Mental Disorders , Patient Discharge , Humans , Outpatients , Aftercare , Patient Readmission , Mental Disorders/therapy
11.
Br J Psychiatry ; 224(2): 47-54, 2024 02.
Article in English | MEDLINE | ID: mdl-37861077

ABSTRACT

BACKGROUND: Forensic patients with psychosis often engage in violent behaviour. There has been significant progress in understanding risk factors for violence, but identification of causal mechanisms of violence is limited. AIMS: To develop a testable psychological framework explaining violence in psychosis - grounded in patient experience - to guide targeted treatment development. METHOD: We conducted in-depth interviews with 20 patients with psychosis using forensic psychiatric services across three regions in England. Interviews were analysed using reflexive thematic analysis. People with lived experience contributed to the analysis. RESULTS: Analysis of interviews identified several psychological processes involved in the occurrence of violence. Violence was the dominant response mode to difficulties that was both habitual and underpinned by rules that engaged and justified an attack. Violence was triggered by a trio of sensitivities to other people: sensitivity to physical threat, from which violence protected; sensitivity to social disrespect, by which violence increased status; and sensitivity to unfairness, by which violence delivered revenge. Violence was an attempt to regulate difficult internal states: intense emotions were released through aggression and violence was an attempt to escape being overwhelmed by voices, visions or paranoia. There were different patterns of emphasis across these processes when explaining an individual participant's offending behaviour. CONCLUSIONS: The seven-factor model of violence derived from our analysis of patient accounts highlights multiple modifiable psychological processes that can plausibly lead to violence. The model can guide the research and development of targeted treatments to reduce violence by individuals with psychosis.


Subject(s)
Psychotic Disorders , Humans , Psychotic Disorders/therapy , Aggression/psychology , Violence/psychology , Emotions , Risk Factors
12.
Br J Psychiatry ; 224(2): 55-65, 2024 02.
Article in English | MEDLINE | ID: mdl-37936347

ABSTRACT

BACKGROUND: Computational models offer promising potential for personalised treatment of psychiatric diseases. For their clinical deployment, fairness must be evaluated alongside accuracy. Fairness requires predictive models to not unfairly disadvantage specific demographic groups. Failure to assess model fairness prior to use risks perpetuating healthcare inequalities. Despite its importance, empirical investigation of fairness in predictive models for psychiatry remains scarce. AIMS: To evaluate fairness in prediction models for development of psychosis and functional outcome. METHOD: Using data from the PRONIA study, we examined fairness in 13 published models for prediction of transition to psychosis (n = 11) and functional outcome (n = 2) in people at clinical high risk for psychosis or with recent-onset depression. Using accuracy equality, predictive parity, false-positive error rate balance and false-negative error rate balance, we evaluated relevant fairness aspects for the demographic attributes 'gender' and 'educational attainment' and compared them with the fairness of clinicians' judgements. RESULTS: Our findings indicate systematic bias towards assigning less favourable outcomes to individuals with lower educational attainment in both prediction models and clinicians' judgements, resulting in higher false-positive rates in 7 of 11 models for transition to psychosis. Interestingly, the bias patterns observed in algorithmic predictions were not significantly more pronounced than those in clinicians' predictions. CONCLUSIONS: Educational bias was present in algorithmic and clinicians' predictions, assuming more favourable outcomes for individuals with higher educational level (years of education). This bias might lead to increased stigma and psychosocial burden in patients with lower educational attainment and suboptimal psychosis prevention in those with higher educational attainment.


Subject(s)
Psychiatry , Psychotic Disorders , Humans , Psychotic Disorders/therapy
13.
Br J Psychiatry ; 224(3): 98-105, 2024 03.
Article in English | MEDLINE | ID: mdl-38044665

ABSTRACT

BACKGROUND: Although attention-deficit hyperactivity disorder (ADHD) is often comorbid with schizophrenia spectrum and other psychotic disorders (SZSPD), concerns about an increased risk of psychotic events have limited its treatment with either psychostimulants or atomoxetine. AIMS: To examine whether the risk of hospital admission for psychosis in people with SZSPD was increased during the year following the introduction of such medications compared with the year before. METHOD: This was a retrospective cohort study using Quebec (Canada) administrative health registries, including all Quebec residents with a public prescription drug insurance plan and a diagnosis of psychotic disorder, defined by relevant ICD-9 or ICD-10 codes, who initiated either methylphenidate, amphetamines or atomoxetine, between January 2010 and December 2016, in combination with antipsychotic medication. The primary outcome was time to hospital admission for psychosis within 1 year of initiation. State sequence analysis was also used to visualise admission trajectories for psychosis in the year following initiation of these medications, compared with the previous year. RESULTS: Out of 2219 individuals, 1589 (71.6%) initiated methylphenidate, 339 (15.3%) amphetamines and 291 (13.1%) atomoxetine during the study period. After adjustment, the risk of hospital admission for psychosis was decreased during the 12 months following the introduction of these medications when used in combination with antipsychotics (adjusted HR = 0.36, 95% CI 0.24-0.54; P < 0.0001). CONCLUSIONS: These findings suggest that, in a real-world setting, when used concurrently with antipsychotic medication, methylphenidate, amphetamines and atomoxetine may be safer than generally believed in individuals with psychotic disorders.


Subject(s)
Antipsychotic Agents , Attention Deficit Disorder with Hyperactivity , Central Nervous System Stimulants , Clinical Deterioration , Methylphenidate , Psychotic Disorders , Humans , Atomoxetine Hydrochloride/adverse effects , Antipsychotic Agents/therapeutic use , Retrospective Studies , Central Nervous System Stimulants/adverse effects , Methylphenidate/adverse effects , Attention Deficit Disorder with Hyperactivity/drug therapy , Attention Deficit Disorder with Hyperactivity/epidemiology , Psychotic Disorders/drug therapy , Psychotic Disorders/epidemiology , Amphetamines/adverse effects
14.
BJPsych Open ; 9(6): e208, 2023 Nov 03.
Article in French | MEDLINE | ID: mdl-37920067

ABSTRACT

Negative symptoms remain poorly understood and treated despite their huge impact on patients' lives and clinical outcomes. This is partly because of ongoing debates about the clinical constructs underlying negative symptoms. A longitudinal analysis of the structure of negative symptoms presented in BJPsych Open reports striking temporal stability of symptom structure, which behaves as a few independent domains. This further underscores the need to address specific symptom domains when considering interventions or pathophysiology studies.

15.
BJPsych Int ; 20(4): 84-89, 2023 Nov.
Article in English | MEDLINE | ID: mdl-38029442

ABSTRACT

People with psychosis in Malawi have very limited access to timely assessment and evidence-based care, leading to a long duration of untreated psychosis and persistent disability. Most people with psychosis in the country consult traditional or religious healers. Stigmatising attitudes are common and services have limited capacity, particularly in rural areas. This paper, focusing on pathways to care for psychosis in Malawi, is based on the Wellcome Trust Psychosis Flagship Report on the Landscape of Mental Health Services for Psychosis in Malawi. Its purpose is to inform Psychosis Recovery Orientation in Malawi by Improving Services and Engagement (PROMISE), a longitudinal study that aims to build on existing services to develop sustainable psychosis detection systems and management pathways to promote recovery.

16.
BJPsych Open ; 9(5): e146, 2023 Aug 08.
Article in English | MEDLINE | ID: mdl-37551106

ABSTRACT

BACKGROUND: Women and gender-diverse people with early psychosis are at risk for suboptimal sexual health outcomes, yet little research has explored their sexual health experiences. AIMS: This study explored sexual health experiences and related priorities among women and gender-diverse people with early psychosis, to identify opportunities for improvements in sexual health and well-being. METHOD: Semi-structured individual qualitative interviews explored how patient participants (n = 19, aged 18-31 years, cisgender and transgender women and non-binary individuals) receiving clinical care from early psychosis programmes in Ontario, Canada, experienced their sexual health, including sexual function and behaviour. Thematic analysis was conducted, with triangulation from interviews/focus groups with clinicians (n = 36) who provide sexual and mental healthcare for this population. RESULTS: Three key themes were identified based on patient interviews: theme 1 was the impact of psychotic illness and its treatments on sexual function and activity, including variable changes in sex drive, attitudes and behaviours during acute psychosis, vulnerability to trauma and medications; theme 2 related to intimacy and sexual relationships in the context of psychosis, with bidirectional effects between relationships and mental health; and theme 3 comprised autonomy, identity and intersectional considerations, including gender, sexuality, culture and religion, which interplay with psychosis and sexual health. Clinicians raised each of these priority areas, but emphasised risk prevention relative to patients' more holistic view of their sexual health and well-being. CONCLUSIONS: Women and non-binary people with early psychosis have wide-ranging sexual health priorities, affecting many facets of their lives. Clinical care should incorporate this knowledge to optimise sexual health and well-being in this population.

17.
Br J Psychiatry ; 223(4): 478-484, 2023 10.
Article in English | MEDLINE | ID: mdl-37485911

ABSTRACT

BACKGROUND: Cannabis has been associated with poorer mental health, but little is known of the effect of synthetic cannabinoids or cannabidiol (often referred to as CBD). AIMS: To investigate associations of cannabis, synthetic cannabinoids and cannabidiol with mental health in adolescence. METHOD: We conducted a cross-sectional analysis with 13- to 14-year-old adolescents across England and Wales in 2019-2020. Multilevel logistic regression was used to examine the association of lifetime use of cannabis, synthetic cannabinoids and cannabidiol with self-reported symptoms of probable depression, anxiety, conduct disorder and auditory hallucinations. RESULTS: Of the 6672 adolescents who participated, 5.2% reported using of cannabis, 1.9% reported using cannabidiol and 0.6% reported using synthetic cannabinoids. After correction for multiple testing, adolescents who had used these substances were significantly more likely to report a probable depressive, anxiety or conduct disorder, as well as auditory hallucinations, than those who had not. Adjustment for socioeconomic disadvantage had little effect on associations, but weekly tobacco use resulted in marked attenuation of associations. The association of cannabis use with probable anxiety and depressive disorders was weaker in those who reported using cannabidiol than those who did not. There was little evidence of an interaction between synthetic cannabinoids and cannabidiol. CONCLUSIONS: To our knowledge, this study provides the first general population evidence that synthetic cannabinoids and cannabidiol are associated with probable mental health disorders in adolescence. These associations require replication, ideally with prospective cohorts and stronger study designs.


Subject(s)
Cannabidiol , Cannabinoids , Cannabis , Humans , Adolescent , Cannabidiol/adverse effects , Mental Health , Cross-Sectional Studies , Prospective Studies , Cannabinoids/adverse effects , Hallucinations/chemically induced , Hallucinations/epidemiology , United Kingdom/epidemiology
18.
J Med Internet Res ; 15(10): e216, 2013 Oct 07.
Article in English | MEDLINE | ID: mdl-24100091

ABSTRACT

BACKGROUND: Mental health policy makers encourage the development of electronic decision aids to increase patient participation in medical decision making. Evidence is needed to determine whether these decision aids are helpful in clinical practice and whether they lead to increased patient involvement and better outcomes. OBJECTIVE: This study reports the outcome of a randomized controlled trial and process evaluation of a Web-based intervention to facilitate shared decision making for people with psychotic disorders. METHODS: The study was carried out in a Dutch mental health institution. Patients were recruited from 2 outpatient teams for patients with psychosis (N=250). Patients in the intervention condition (n=124) were provided an account to access a Web-based information and decision tool aimed to support patients in acquiring an overview of their needs and appropriate treatment options provided by their mental health care organization. Patients were given the opportunity to use the Web-based tool either on their own (at their home computer or at a computer of the service) or with the support of an assistant. Patients in the control group received care as usual (n=126). Half of the patients in the sample were patients experiencing a first episode of psychosis; the other half were patients with a chronic psychosis. Primary outcome was patient-perceived involvement in medical decision making, measured with the Combined Outcome Measure for Risk Communication and Treatment Decision-making Effectiveness (COMRADE). Process evaluation consisted of questionnaire-based surveys, open interviews, and researcher observation. RESULTS: In all, 73 patients completed the follow-up measurement and were included in the final analysis (response rate 29.2%). More than one-third (48/124, 38.7%) of the patients who were provided access to the Web-based decision aid used it, and most used its full functionality. No differences were found between the intervention and control conditions on perceived involvement in medical decision making (COMRADE satisfaction with communication: F1,68=0.422, P=.52; COMRADE confidence in decision: F1,67=0.086, P=.77). In addition, results of the process evaluation suggest that the intervention did not optimally fit in with routine practice of the participating teams. CONCLUSIONS: The development of electronic decision aids to facilitate shared medical decision making is encouraged and many people with a psychotic disorder can work with them. This holds for both first-episode patients and long-term care patients, although the latter group might need more assistance. However, results of this paper could not support the assumption that the use of electronic decision aids increases patient involvement in medical decision making. This may be because of weak implementation of the study protocol and a low response rate.


Subject(s)
Decision Making , Group Processes , Internet , Psychotic Disorders/psychology , Humans , Netherlands
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