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1.
Acta Psychiatr Scand ; 2024 Jun 09.
Artículo en Inglés | MEDLINE | ID: mdl-38853472

RESUMEN

BACKGROUND: Virtual Reality cognitive behavioral therapy (VR-CBT) has proven to be an effective treatment method for paranoia and anxiety in psychosis. However, it is unknown, which individuals benefit most from VR-CBT. Previous studies examined factors affecting the treatment effect of regular CBTp, including illness duration, paranoia, depression, and pre-therapy avoidance behaviors, but results are inconsistent. The study aims to investigate the factors that influence the effectiveness of VR-CBT. METHODS: A total of 95 participants with a psychotic disorder and at least moderate paranoia (GTPS >40) were included in this explorative study. Data were collected as part of a multicenter randomized controlled trial in which participants were assigned to VR-CBT or treatment as usual (TAU). The VR-CBT group received 16 sessions of individual treatment. A moderator analysis was conducted to examine the influence of baseline demographic (age, gender, and education level) and clinical characteristics (duration of illness, paranoia, anxiety, depression, safety behavior, self-esteem, and social functioning) on treatment effects of paranoia and anxiety as measured with questionnaires and the experience sampling method (ESM) directly after treatment (12 weeks after baseline). RESULTS: More use of safety behavior at baseline resulted in greater benefits of VR-CBT on paranoid ideation and ESM paranoia. A higher age was associated with greater benefits of VR-CBT on social anxiety but not paranoia outcomes. There was no consistent evidence of moderation by any of the other sociodemographic or clinical variables for paranoid ideation and social anxiety. CONCLUSIONS: Our findings suggest that a diverse spectrum of patients, with different backgrounds and symptom severity may be able to benefit from VR-CBT. VR-CBT can be recommended to a broad spectrum of patients with psychotic disorders, and particularly those with high levels of safety behaviors, including severe avoidance, seem to benefit more.

2.
Tijdschr Psychiatr ; 66(6): 320-323, 2024.
Artículo en Holandés | MEDLINE | ID: mdl-39162156

RESUMEN

BACKGROUND: Almost one million Muslims live in the Netherlands, and as first or second-generation migrants, they are at increased risk of developing psychiatric problems. There are barriers for using mental health care, partly due to cultural differences. AIM: With this essay, we like to contribute to existing knowledge, aiming to improve mental health care to Muslims in the Netherlands. METHOD: We will discuss this theme using personal experiences and Dutch and international research. RESULTS: Dutch Muslims use biopsychosocial as well as religious explanations for mental health problems. Mental health problems can be regarded a test of Allah, demanding patience and strength. Allah can be perceived as the source that will resolve the problems. Religion is a source of support and often the first remedy that is tried, e.g. Ruqya (reciting Quran texts). The feeling that problems should be resolved alone, and experienced taboo increase the barrier to regular mental health care. CONCLUSION: For most Muslims, religion is an important factor in explanations and help seeking for mental health problems. For the relation between health care worker and patient, it is important to investigate explanations for mental health problems and the role religion in relation to the problems.


Asunto(s)
Islamismo , Trastornos Mentales , Humanos , Islamismo/psicología , Trastornos Mentales/psicología , Países Bajos , Salud Mental , Religión y Psicología , Servicios de Salud Mental
3.
Psychol Med ; 51(5): 770-776, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-31875791

RESUMEN

BACKGROUND: Lesbian, bisexual, or gay individuals (LBGs) have an increased risk for mental health problems compared to heterosexuals, but this association has sparsely been investigated for psychotic disorders. The aim of this study was: (1) to examine whether LBG sexual orientation is more prevalent in individuals with a non-affective psychotic disorder (NAPD) than in people without a psychotic disorder; and if so, (2) to explore possible mediating pathways. METHODS: Sexual orientation was assessed in the 6-year follow-up assessment of the Dutch Genetic Risk and Outcome of Psychosis study (GROUP), a case-control study with 1547 participants (582 patients with psychotic disorder, 604 siblings, and 361 controls). Binary logistic regression analyses were used to calculate the risk of patients with a psychotic disorder being LBG, compared to siblings and controls. Perceived discrimination, history of bullying, childhood trauma (CT), and sexual identity disclosure were investigated as potential mediating variables. RESULTS: The proportion of individuals with LBG orientation was 6.8% in patients (n = 40), 4.3% in siblings (n = 26), and 2.5% in controls (n = 10). The age- and gender-adjusted odds ratio of LBG for patients was 1.57 (95% CI 1.08-2.27; p = 0.019), compared to siblings and controls. Discrimination, bullying, and CT all partially mediated this association. CONCLUSIONS: Adverse social experiences related to sexual minority status may increase the risk for NAPD. Sexual identity, behavior, and difficulties need more attention in everyday clinical practice.


Asunto(s)
Trastornos Psicóticos/epidemiología , Trastornos Psicóticos/psicología , Minorías Sexuales y de Género/psicología , Sexualidad/psicología , Adolescente , Adulto , Estudios de Casos y Controles , Femenino , Homosexualidad/psicología , Humanos , Masculino , Persona de Mediana Edad , Países Bajos/epidemiología , Factores de Riesgo , Minorías Sexuales y de Género/estadística & datos numéricos , Sexualidad/estadística & datos numéricos , Adulto Joven
4.
BMC Psychiatry ; 21(1): 541, 2021 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-34724909

RESUMEN

INTRODUCTION: Various studies have demonstrated that individuals with a psychotic disorder are at an increased risk of becoming a victim of crime. Little is known about gender differences in victimization types and in specific characteristics of victimization (e.g., perpetrator, location or disclosure). Knowledge on characteristics of victimization would provide clinicians with more insight which may be especially useful for tailoring interventions. The aim of this study is to examine gender differences in characteristics of violent and sexual victimization in patients with a psychotic disorder. METHODS: Information on violent (threats, physical abuse) and sexual victimization (harassment, assault) was assessed in 482 individuals with a psychotic disorder who received mental health care. Patients were recruited through a routine outcome monitoring study and a clinical trial. RESULTS: Men reported more threats with violence (20.7% vs. 10.5%, x2 = 7.68, p = 0.01), whereas women reported more sexual assault (13.3% vs. 3.6%, x2 = 15.43, p < 0.001). For violent victimization, women were more likely than men to be victimized by a partner, friend or family member (52.9% vs. 30.6%) as opposed to a stranger (11.8% vs. 40.3%; O.R. = 52.49) and to be victimized at home (60.0% vs. 29.3%) as opposed to on the street or elsewhere (40.0% vs. 70.3%; O.R. = 0.06). For sexual victimization, there was no difference in location and perpetrator between men and women. For sexual victimization and physical violence, no differences in disclosure were found, but women were more likely not to disclose threats with violence or to disclose threats to a professional or police (52.9% vs. 45.2%; O.R. = 30.33). All analyses were controlled for age, diagnosis and employment. DISCUSSION: Gender patterns of victimization types and characteristics are similar for individuals with a psychotic disorder in comparison to the general population. Men were at higher risk of violent victimization, whereas women were at higher risk for sexual victimization. Men were more likely to become victimized in the streets or elsewhere by a stranger, whereas women seemed to be more often victimized at home by a partner, friend or a family member. Future studies may tailor interventions preventing victimization in psychosis according to gender.


Asunto(s)
Víctimas de Crimen , Trastornos Psicóticos , Delitos Sexuales , Estudios Transversales , Femenino , Humanos , Masculino , Trastornos Psicóticos/epidemiología , Factores Sexuales
5.
BMC Psychiatry ; 21(1): 496, 2021 10 11.
Artículo en Inglés | MEDLINE | ID: mdl-34635063

RESUMEN

BACKGROUND: Seventy per cent of patients with psychotic disorders has paranoid delusions. Paranoid delusions are associated with significant distress, hospital admission and social isolation. Cognitive-behavioural therapy for psychosis (CBTp) is the primary psychological treatment, but the median effect size is only small to medium. Virtual reality (VR) has a great potential to improve the effectiveness of CBTp. In a previous study, we found that VR based CBT (VRcbt) for paranoid delusions is superior to waiting list. As a next step, a direct comparison with CBTp is needed. The present study aims to investigate whether VRcbt is more effective and cost-effective than regular CBTp in treating paranoid delusions and improving daily life social functioning of patients with psychotic disorders. METHODS: A total of 106 patients with DSM-5 diagnosis of psychotic disorder and at least moderate level of paranoid ideations will be recruited for this multicentre randomized controlled trial (RCT). Patients will be randomized to either VRcbt or standard CBTp for paranoid delusions. VRcbt consists of maximum 16 sessions in virtual social situations that trigger paranoid ideations and distress, delivered in an 8-12 week time frame. Standard CBTp also consists of maximum 16 sessions including exposure and behavioural experiments, delivered in an 8-12 week time frame. The two groups will be compared at baseline, post-treatment and six months follow-up. Primary outcome is the level of paranoid ideations in daily life social situations, measured with ecological momentary assessments (EMA) at semi-random moments ten times a day during seven days, before and after treatment. Every session, participants and therapists will rate the level of paranoid ideation and global clinical impression. DISCUSSION: Comparison of VRcbt and CBTp will provide information about the relative (cost-) effectiveness of VRcbt for this population. VRcbt may become a preferred psychological treatment for paranoid delusions and social anxiety in patients with psychotic disorder. TRIAL REGISTRATION: Netherlands Trial Register, NL7758. Registered on 23 May 2019.


Asunto(s)
Terapia Cognitivo-Conductual , Trastornos Psicóticos , Terapia de Exposición Mediante Realidad Virtual , Realidad Virtual , Deluciones/terapia , Humanos , Estudios Multicéntricos como Asunto , Trastornos Psicóticos/terapia , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Tratamiento
6.
Tijdschr Psychiatr ; 63(11): 775-781, 2021.
Artículo en Holandés | MEDLINE | ID: mdl-34851516

RESUMEN

BACKGROUND: Conspiracy theories are popular during the COVID-19 pandemic. Conspiratorial thinking is characterised by the strong conviction that a certain situation that one sees as unjust is the result of a deliberate conspiracy of a group of people with bad intentions. Conspiratorial thinking appears to have many similarities with paranoid delusions. AIM: To explore the nature, consequences, and social-psychological dimensions of conspiratorial thinking, and describe similarities and differences with paranoid delusions. METHOD: Critically assessing relevant literature about conspiratorial thinking and paranoid delusions. RESULTS: Conspiratorial thinking meets epistemic, existential, and social needs. It provides clarity in uncertain times and connection with an in-group of like-minded people. Both conspiratorial thinking and paranoid delusions involve an unjust, persistent, and sometimes bizarre conviction. Unlike conspiracy theorists, people with a paranoid delusion are almost always the only target of the presumed conspiracy, and they usually stand alone in their conviction. Furthermore, conspiracy theories are not based as much on unusual experiences of their inner self, reality, or interpersonal contacts. CONCLUSIONS Conspirational thinking is common in uncertain circumstances. It gives grip, certainty, moral superiority and social support. Extreme conspirational thinking seems to fit current psychiatric definitions of paranoid delusions, but there are also important differences. To make a distinction with regard to conspiratorial thinking, deepening of conventional definitions of delusions is required. Instead of the strong focus on the erroneous content of delusions, more attention should be given to the underlying idiosyncratic, changed way of experiencing reality.


Asunto(s)
COVID-19 , Trastornos Mentales , Deluciones , Humanos , Pandemias , SARS-CoV-2
7.
Soc Psychiatry Psychiatr Epidemiol ; 54(3): 303-312, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30413848

RESUMEN

PURPOSE: There is considerable variation in epidemiology and clinical course of psychotic disorders across social and geographical contexts. To date, very little data are available from low- and middle-income countries. In sub-Saharan Africa, most people with psychoses remain undetected and untreated, partly due to lack of formal health care services. This study in rural South Africa aimed to investigate if it is possible to identify individuals with recent-onset psychosis in collaboration with traditional health practitioners (THPs). METHODS: We developed a strategy to engage with THPs. Fifty THPs agreed to collaborate and were asked to refer help-seeking clients with recent-onset psychosis to the study. At referral, the THPs rated probability of psychosis ("maybe disturbed" or "disturbed"). A two-step diagnostic procedure was conducted, including the self-report Community Assessment of Psychic Experiences (CAPE) as screening instrument, and a semi-structured interview using the Schedules for Clinical Assessment in Neuropsychiatry (SCAN). Accuracy of THP referrals, and test characteristics of the THP rating and the CAPE were calculated. RESULTS: 149 help-seeking clients were referred by THPs, of which 44 (29.5%) received a SCAN DSM-IV diagnosis of psychotic disorder. The positive predictive value of a THP "disturbed" rating was 53.8%. Test characteristics of the CAPE were poor. CONCLUSION: THPs were open to identifying and referring individuals with possible psychosis. They recognized "being disturbed" as a condition for which collaboration with formal psychiatric services might be beneficial. By contrast, the CAPE performed poorly as a screening instrument. Collaboration with THPs is a promising approach to improve detection of individuals with recent-onset psychosis in rural South Africa.


Asunto(s)
Personal de Salud , Trastornos Psicóticos/diagnóstico , Población Rural , Adulto , Femenino , Humanos , Masculino , Tamizaje Masivo , Proyectos Piloto , Sudáfrica , Adulto Joven
8.
Brain Behav Immun ; 69: 408-417, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29289662

RESUMEN

BACKGROUND: Psychotic disorders are characterized by a deranged immune system, including altered number and function of Natural Killer (NK) and T cells. Psychotic disorders arise from an interaction between genetic vulnerability and exposure to environmental risk factors. Exposure to social adversity during early life is particularly relevant to psychosis risk and is thought to increase reactivity to subsequent minor daily social stressors. Virtual reality allows controlled experimental exposure to virtual social stressors. AIM: To investigate the interplay between social adversity during early life, cell numbers of NK cells and T helper subsets and social stress reactivity in relation to psychosis liability. METHODS: Circulating numbers of Th1, Th2, Th17, T regulator and NK cells were determined using flow cytometry in 80 participants with low psychosis liability (46 healthy controls and 34 siblings) and 53 participants with high psychosis liability (14 ultra-high risk (UHR) patients and 39 recent-onset psychosis patients), with and without the experience of childhood trauma. We examined if cell numbers predicted subjective stress when participants were exposed to social stressors (crowdedness, hostility and being part of an ethnic minority) in a virtual reality environment. RESULTS: There were no significant group differences in Th1, Th2, Th17, T regulator and NK cell numbers between groups with a high or low liability for psychosis. However, in the high psychosis liability group, childhood trauma was associated with increased Th17 cell numbers (p = 0.028). Moreover, in the high psychosis liability group increased T regulator and decreased NK cell numbers predicted stress experience during exposure to virtual social stressors (p = 0.015 and p = 0.009 for T regulator and NK cells, respectively). CONCLUSION: A deranged Th17/T regulator balance and a reduced NK cell number are associated intermediate biological factors in the relation childhood trauma, psychosis liability and social stress reactivity.


Asunto(s)
Células Asesinas Naturales/citología , Trastornos Psicóticos/sangre , Estrés Psicológico/sangre , Linfocitos T Reguladores/citología , Células Th17/citología , Adulto , Femenino , Humanos , Masculino , Medio Social , Adulto Joven
9.
Tijdschr Psychiatr ; 60(3): 161-165, 2018.
Artículo en Holandés | MEDLINE | ID: mdl-29521403

RESUMEN

BACKGROUND: Personalised medicine (pm) means treatment that specifically targets the needs of individual patients on the basis of genetic, biomarker, phenotypic or psychosocial characteristics.
AIM: To update our knowledge about the current use of pm in the treatment of psychotic disorders.
METHOD: Review of the literature on pm for psychoses.
RESULTS: At the moment, genetic and other biological characteristics cannot be used for the diagnosis and treatment of psychotic disorders because they are not sensitive enough and their specificity is too low. We investigated immunulogical, oxidative, metabolic, hormonal and dopaminergic aspects that could lead to the use of pm. pm is already being used on the basis of phenotypical, cognitive and psychosocial characteristics; those characteristics include substance abuse, cognitive dysfunction, ethnicity and childhood trauma.
CONCLUSION: In the next years there may be more opportunities for using for pm in psychosis. The increase may results from large genetic network studies and treatment studies involving stratification based on hypothetical specific mechanisms instead of on the categorical diagnosis of illnesses such as schizophrenia.


Asunto(s)
Medicina de Precisión , Trastornos Psicóticos/diagnóstico , Redes Reguladoras de Genes , Humanos , Clasificación Internacional de Enfermedades , Trastornos Psicóticos/genética
10.
Psychol Med ; 46(16): 3339-3348, 2016 12.
Artículo en Inglés | MEDLINE | ID: mdl-27619196

RESUMEN

BACKGROUND: Childhood trauma is associated with higher risk for mental disorders, including psychosis. Heightened sensitivity to social stress may be a mechanism. This virtual reality study tested the effect of childhood trauma on level of paranoid ideations and distress in response to social stress, in interaction with psychosis liability and level of social stress exposure. METHOD: Seventy-five individuals with higher psychosis liability (55 with recent onset psychotic disorder and 20 at ultra-high risk for psychosis) and 95 individuals with lower psychosis liability (42 siblings and 53 controls) were exposed to a virtual café in five experiments with 0-3 social stressors (crowded, other ethnicity and hostility). Paranoid ideation was measured after each experiment. Subjective distress was self-rated before and after experiments. Multilevel random regression analyses were used to test main effects of childhood trauma and interaction effects. RESULTS: Childhood trauma was more prevalent in individuals with higher psychosis liability, and was associated with higher level of (subclinical) psychotic and affective symptoms. Individuals with a history of childhood trauma responded with more subjective distress to virtual social stress exposures. The effects of childhood trauma on paranoia and subjective distress were significantly stronger when the number of virtual environmental stressors increased. Higher psychosis liability increased the effect of childhood trauma on peak subjective distress and stress reactivity during experiments. CONCLUSIONS: Childhood trauma is associated with heightened social stress sensitivity and may contribute to psychotic and affective dysregulation later in life, through a sensitized paranoid and stress response to social stressors.


Asunto(s)
Adultos Sobrevivientes de Eventos Adversos Infantiles/psicología , Trastornos Paranoides/psicología , Síntomas Prodrómicos , Trastornos Psicóticos/psicología , Estrés Psicológico/psicología , Interfaz Usuario-Computador , Adulto , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Análisis Multinivel , Análisis de Regresión , Riesgo , Hermanos , Adulto Joven
11.
Psychol Med ; 46(9): 1839-51, 2016 07.
Artículo en Inglés | MEDLINE | ID: mdl-26979398

RESUMEN

BACKGROUND: Current ultra-high-risk (UHR) criteria appear insufficient to predict imminent onset of first-episode psychosis, as a meta-analysis showed that about 20% of patients have a psychotic outcome after 2 years. Therefore, we aimed to develop a stage-dependent predictive model in UHR individuals who were seeking help for co-morbid disorders. METHOD: Baseline data on symptomatology, and environmental and psychological factors of 185 UHR patients (aged 14-35 years) participating in the Dutch Early Detection and Intervention Evaluation study were analysed with Cox proportional hazard analyses. RESULTS: At 18 months, the overall transition rate was 17.3%. The final predictor model included five variables: observed blunted affect [hazard ratio (HR) 3.39, 95% confidence interval (CI) 1.56-7.35, p < 0.001], subjective complaints of impaired motor function (HR 5.88, 95% CI 1.21-6.10, p = 0.02), beliefs about social marginalization (HR 2.76, 95% CI 1.14-6.72, p = 0.03), decline in social functioning (HR 1.10, 95% CI 1.01-1.17, p = 0.03), and distress associated with suspiciousness (HR 1.02, 95% CI 1.00-1.03, p = 0.01). The positive predictive value of the model was 80.0%. The resulting prognostic index stratified the general risk into three risk classes with significantly different survival curves. In the highest risk class, transition to psychosis emerged on average ⩾8 months earlier than in the lowest risk class. CONCLUSIONS: Predicting a first-episode psychosis in help-seeking UHR patients was improved using a stage-dependent prognostic model including negative psychotic symptoms (observed flattened affect, subjective impaired motor functioning), impaired social functioning and distress associated with suspiciousness. Treatment intensity may be stratified and personalized using the risk stratification.


Asunto(s)
Trastornos Mentales/terapia , Modelos Estadísticos , Trastornos Psicóticos/fisiopatología , Adolescente , Adulto , Comorbilidad , Estudios de Seguimiento , Humanos , Trastornos Mentales/epidemiología , Pronóstico , Trastornos Psicóticos/diagnóstico , Trastornos Psicóticos/epidemiología , Riesgo , Adulto Joven
12.
Soc Psychiatry Psychiatr Epidemiol ; 51(12): 1603-1613, 2016 12.
Artículo en Inglés | MEDLINE | ID: mdl-27372300

RESUMEN

PURPOSE: Epidemiological studies in the Netherlands have reported an excessive gender gap in the risk for non-affective psychotic disorder (NAPD) among immigrants from Morocco with a higher risk elevation in males compared to females. We examined the consistency of these findings and their generalizability to immigrants from the Maghreb (Mauritania, Morocco, Algeria, Tunisia and Libya) in other European countries. METHODS: Systematic review and meta-analysis. Medline, PsychINFO and EMBASE databases were searched for publications in the period from January 1970 to April 2014. We included incidence and prevalence studies of non-affective psychotic disorder (NAPD) among migrants from the Maghreb in Europe and studies of subclinical psychotic symptoms (SPS) in representative samples. A meta-analysis was performed on the subgroup of incidence studies. RESULTS: Five incidence and three prevalence studies of NAPD, and two prevalence studies of SPS, conducted in the Netherlands (n=7), Belgium (n=1), France (n=1) and Italy (n=1) met our inclusion criteria. Across all research designs, the risks of NAPD and SPS were consistently increased among male, not female immigrants from the Maghreb. The meta-analysis of incidence studies of NAPD yielded male-to-female risk ratios of 5.1 [95 % confidence interval (CI) 3.1-8.4] for migrants from the Maghreb, 2.0 (95 % CI 1.6-2.5) for other migrant groups, and 1.8 (95 % CI 1.3-2.5) for non-migrant Europeans. CONCLUSIONS: The marked gender gap in psychosis risk among migrants from the Maghreb appears a consistent finding, foremost among the Moroccan-Dutch. The small number of studies limits the strength of conclusions that can be drawn about countries other than the Netherlands. Achievement-expectation mismatch, social marginalization and an increased prevalence of illicit drug use are possible explanations.


Asunto(s)
Emigrantes e Inmigrantes/estadística & datos numéricos , Trastornos Psicóticos/epidemiología , África del Norte/epidemiología , Europa (Continente)/epidemiología , Femenino , Humanos , Masculino , Trastornos Psicóticos/etnología , Factores Sexuales
13.
Psychol Med ; 45(9): 1789-98, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25402968

RESUMEN

BACKGROUND: Environmental factors such as urban birth and ethnic minority position have been related to risk for psychotic disorders. There is some evidence that not only individual, but also neighborhood characteristics influence this risk. The aim of this study was to investigate social disorganization of neighborhoods and incidence of psychotic disorders. METHOD: The research was a 7-year first-contact incidence study of psychotic disorders in The Hague. Neighborhood characteristics included continuous, dichotomous and cumulative measures of socio-economic level, residential mobility, ethnic diversity, proportion of single person households, voter turnout, population density and crime level. Using multilevel Poisson regression analysis, incidence rate ratios (IRRs) and 95% confidence intervals (CIs) of psychotic disorders were calculated for the indicators of neighborhood social disorganization. RESULTS: A total of 618 incident cases were identified. Neighborhood socio-economic level and residential mobility had the strongest association with incidence of psychotic disorders [individual-level adjusted Wald χ2 1 = 13.03 (p = 0.0003) and 5.51 (p = 0.02), respectively]. All but one (proportion of single person households) of the dichotomous neighborhood indicators were significantly associated with a higher IRR. The cumulative degree of neighborhood social disorganization was strongly and linearly associated with the incidence of psychotic disorders (trend test, Wald χ2 5 = 25.76, p = 0.0001). The IRR in neighborhoods with the highest degree of social disorganization was 1.95 (95% CI 1.38-2.75) compared with the lowest disorganization category. CONCLUSIONS: The findings suggest that the risk for developing a psychotic disorder is higher for people living in socially disorganized environments. Longitudinal studies are needed to investigate causality.


Asunto(s)
Trastornos Psicóticos Afectivos/epidemiología , Anomia (Social) , Diversidad Cultural , Densidad de Población , Dinámica Poblacional , Trastornos Psicóticos/epidemiología , Características de la Residencia , Esquizofrenia/epidemiología , Adolescente , Adulto , Trastorno Bipolar/epidemiología , Crimen/estadística & datos numéricos , Trastorno Depresivo/epidemiología , Etnicidad , Composición Familiar , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Análisis Multinivel , Países Bajos/epidemiología , Distribución de Poisson , Política , Esquizofrenia Paranoide/epidemiología , Persona Soltera/estadística & datos numéricos , Clase Social , Adulto Joven
14.
Psychol Med ; 45(3): 637-46, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25099751

RESUMEN

BACKGROUND: The risk for psychotic disorders is increased for many ethnic minority groups and may develop in early childhood. This study investigated whether the prevalence of psychotic experiences (PE) with high impact is higher among ethnic minority youth compared to majority youth and examined the significance of these PE. METHOD: A school-based study assessed a large community sample of 1545 ethnic minority and majority children in The Netherlands (mean age 12.98 ± 1.81 years). The Dutch (n = 702, 45.4%), Moroccan-Dutch (n = 400, 25.9%) and Turkish-Dutch (n = 170, 11.0%) ethnic groups could be studied separately. Self-report questionnaires on PE, impact and cultural context were administered. RESULTS: Prevalence of PE with high impact was 3.1% in Dutch, 9.5% in Moroccan-Dutch and 7.1% in Turkish-Dutch youth. Compared to Dutch youth, odds ratios were 3.0 [95% confidence interval (CI) 1.7-5.1] for Moroccan-Dutch youth and 2.2 (95% CI 1.1-4.6) for Turkish-Dutch youth. Differences were not explained by cultural or religious differences. CONCLUSIONS: The increased risk for psychotic disorders in ethnic minorities may already be detectable in childhood, since PE with high impact were more common among ethnic minority youth compared to majority youth. The additional measurement of impact of PE appears to be a valid approach to identify those children at risk to develop psychotic or other more common psychiatric disorders.


Asunto(s)
Emigrantes e Inmigrantes/psicología , Grupos Minoritarios/psicología , Trastornos Psicóticos/etnología , Adolescente , Niño , Psiquiatría Infantil , Femenino , Humanos , Modelos Logísticos , Masculino , Marruecos/etnología , Países Bajos/epidemiología , Oportunidad Relativa , Factores de Riesgo , Autoinforme , Turquía/etnología
15.
Psychol Med ; 45(7): 1435-46, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25330734

RESUMEN

BACKGROUND: Although there is evidence for the effectiveness of interventions for psychosis among ultra-high-risk (UHR) groups, health economic evaluations are lacking. This study aimed to determine the cost effectiveness and cost-utility of cognitive-behavioural therapy (CBT) to prevent first-episode psychosis. METHOD: The Dutch Early Detection and Intervention Evaluation study was a randomized controlled trial of 196 UHR patients with an 18-month follow-up. All participants were treated with routine care (RC) for non-psychotic disorders. The experimental group (n = 95) received add-on CBT to prevent first-episode psychosis. We report the intervention, medical and travel costs, as well as costs arising from loss of productivity. Treatment response was defined as psychosis-free survival and quality-adjusted life years (QALYs) gained. RESULTS: In the cost-effectiveness analysis, the proportion of averted psychoses was significantly higher in the CBT condition (89.5% v. 76.2%). CBT showed a 63.7% probability of being more cost effective, because it was less costly than RC by US$844 (£551) per prevented psychosis. In the cost-utility analysis, QALY health gains were slightly higher for CBT than for RC (0.60 v. 0.57) and the CBT intervention had a 52.3% probability of being the superior treatment because, for equal or better QALY gains, the costs of CBT were lower than those of RC. CONCLUSIONS: Add-on preventive CBT for UHR resulted in a significant reduction in the incidence of first psychosis. QALY gains show little difference between the two conditions. The CBT intervention proved to be cost saving.


Asunto(s)
Terapia Cognitivo-Conductual/economía , Análisis Costo-Beneficio , Trastornos Psicóticos/economía , Trastornos Psicóticos/prevención & control , Adolescente , Adulto , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Masculino , Evaluación de Resultado en la Atención de Salud , Años de Vida Ajustados por Calidad de Vida , Riesgo , Adulto Joven
16.
Psychol Med ; 44(2): 421-33, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23710972

RESUMEN

BACKGROUND: Ethnic minority position is associated with increased risk for psychotic outcomes, which may be mediated by experiences of social exclusion, defeat and discrimination. Sexual minorities are subject to similar stressors. The aim of this study is to examine whether sexual minorities are at increased risk for psychotic symptoms and to explore mediating pathways. METHOD: A cross-sectional survey was performed assessing cumulative incidence of psychotic symptoms with the Composite International Diagnostic Interview in two separate random general population samples (NEMESIS-1 and NEMESIS-2). Participants were sexually active and aged 18-64 years (n = 5927, n = 5308). Being lesbian, gay or bisexual (LGB) was defined as having sexual relations with at least one same-sex partner during the past year. Lifetime experience of any psychotic symptom was analysed using logistic regression, adjusted for gender, educational level, urbanicity, foreign-born parents, living without a partner, cannabis use and other drug use. RESULTS: The rate of any psychotic symptom was elevated in the LGB population as compared with the heterosexual population both in NEMESIS-1 [odds ratio (OR) 2.56, 95% confidence interval (CI) 1.71-3.84] and NEMESIS-2 (OR 2.30, 95% CI 1.42-3.71). Childhood trauma, bullying and experience of discrimination partly mediated the association. CONCLUSIONS: The finding that LGB orientation is associated with psychotic symptoms adds to the growing body of literature linking minority status with psychosis and other mental health problems, and suggests that exposure to minority stress represents an important mechanism.


Asunto(s)
Bisexualidad/psicología , Heterosexualidad/psicología , Homosexualidad/psicología , Trastornos Psicóticos/etiología , Adolescente , Adulto , Bisexualidad/estadística & datos numéricos , Estudios Transversales , Femenino , Heterosexualidad/estadística & datos numéricos , Homosexualidad/estadística & datos numéricos , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Países Bajos/epidemiología , Trastornos Psicóticos/epidemiología , Trastornos Psicóticos/psicología , Factores de Riesgo , Clase Social , Adulto Joven
17.
Schizophr Res ; 272: 98-103, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39214023

RESUMEN

BACKGROUND: Safety behaviors, both positive (maladaptive coping behavior) and negative (avoidance behavior), are used by people with paranoid delusions to avoid perceived threats. Safety behaviors contribute to the persistence of paranoid delusions by preventing disconfirmation of threat beliefs and may influence other psychiatric symptoms. This study investigated how changes in safety behaviors are related to changes in paranoid ideation, social anxiety, depression, cognitive biases and self-esteem over time. METHODS: This study included 116 patients diagnosed with a psychotic disorder (DSM-IV) and at least moderate levels of paranoid ideations (GTPS >40).The data were collected as part of a multi-center randomized controlled trial where patients were randomized to VR-CBT (n = 58) or treatment as usual (TAU; n = 58). Assessments were completed at baseline (T0), after three months (T3) and after six months (T6). For all variables, change scores between T0 and T3 and T3 and T6 were calculated and Pearson correlations between change scores were computed. RESULTS: A decrease in total safety behavior was related to diminished paranoid ideation, social anxiety, and depression. No significant temporal associations were found between changes in safety behavior and changes in cognitive biases and self-esteem. Similar but less robust results were found for respectively negative safety behavior and positive safety behavior. CONCLUSION: Dropping safety behavior can be specifically targeted in behavioral interventions. Whereas there appears to be a relation with reduction in anxiety, paranoia, and depressive symptoms, changes in safety behavior do not seem to align with changes in cognitive thinking processes.


Asunto(s)
Terapia Cognitivo-Conductual , Trastornos Paranoides , Trastornos Psicóticos , Autoimagen , Humanos , Masculino , Femenino , Adulto , Trastornos Psicóticos/fisiopatología , Persona de Mediana Edad , Depresión , Ansiedad , Adaptación Psicológica/fisiología , Adulto Joven
18.
J Psychiatr Res ; 170: 302-306, 2024 02.
Artículo en Inglés | MEDLINE | ID: mdl-38185076

RESUMEN

Psychotic disorders have a strong negative impact on multiple aspects of daily life, including people's financial situation. This exploratory study examines the level of financial dissatisfaction and its correlates in a large cohort of people with psychotic disorders. Data from the first assessments of people with psychotic disorders (n = 5271) who were included in the Pharmacotherapy Monitoring and Outcome Survey (PHAMOUS; 2006-2020), which is conducted in the northern Netherlands, were used. The Manchester Short Assessment of Quality of Life (MANSA) was used to measure financial dissatisfaction. In addition, sociodemographic and psychiatric characteristics, substance use and global and social functioning were assessed. One-fifth to one-third of people with psychotic disorders report financial dissatisfaction, fluctuating over the year in which they were assessed. These proportions are considerably higher than in the general population. Cannabis and other substance use were associated with higher levels of financial dissatisfaction (small to medium effect). The other significant associations showed (very) small effect sizes. Therefore, we conclude that financial dissatisfaction in people with psychotic disorders appears to be relatively independent of other demographic and psychiatric characteristics, and global and social functioning. These findings are an important first step for increasing knowledge on financial dissatisfaction among people with psychotic disorders. The findings can also contribute to raising awareness about the topic for healthcare professionals working in this field.


Asunto(s)
Trastornos Psicóticos , Trastornos Relacionados con Sustancias , Humanos , Prevalencia , Calidad de Vida , Trastornos Psicóticos/tratamiento farmacológico , Emociones , Trastornos Relacionados con Sustancias/epidemiología
19.
Int J Soc Psychiatry ; 70(3): 542-553, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38312047

RESUMEN

AIMS: Most evidence on psychosocial factors in recent-onset psychosis comes from high-income countries in Europe, Australia, Canada and the USA, while these factors are likely to differ under varying sociocultural and economic circumstances. In this study, we aimed to investigate associations of self-stigma, religiosity and perceived social support with symptom severity and psychosocial functioning in an Iranian cohort of people with recent-onset psychosis (i.e. illness duration of <2 years). METHODS: We used baseline data of 361 participants (N = 286 [74%] male, mean age = 34 years [Standard Deviation = 10.0]) from the Iranian Azeri Recent-onset Acute Phase Psychosis Survey (ARAS). We included assessments of self-stigma (Internalized Stigma of Mental Illness, ISMI), religiosity (based on Stark & Glock), perceived social support (Multidimensional Scale of Perceived Social Support, MSPSS), symptom severity (Positive And Negative Syndrome Scale, PANSS) and psychosocial functioning (clinician-rated Global Assessment of Functioning Scale, GAF, and self-reported World Health Organization Disability Assessment Schedule 2.0, WHODAS 2.0). Descriptive analyses were employed to characterize the study sample. Covariate-adjusted ordinal and multivariable linear regression analyses were performed to investigate cross-sectional associations of baseline ISMI, religiosity and MSPSS with concurrent PANSS, GAF and WHODAS 2.0. RESULTS: Higher self-stigma was associated with poorer self-reported functioning (B = 0.375 [95% Confidence Interval (CI): 0.186, 0.564]) and more severe concurrent symptoms (B = 0.436 [95% CI: 0.275, 0.597]). Being more religious was associated with poorer clinician-rated functioning (OR = 0.967 [95% CI: 0.944, 0.991]), but with less severe symptoms (B = -0.258 [95% CI: -0.427, -0.088]). Stronger social support was associated with poorer clinician-rated (OR = 0.956 [95% CI: 0.935, 0.978]) and self-reported functioning (B = 0.337 [95% CI: 0.168, 0.507]). CONCLUSION: This study shows that self-stigma, religiosity and perceived social support were associated with symptom severity and clinician-rated as well as self-reported psychosocial functioning in an Iranian cohort of people with recent-onset psychosis. The findings extend previous evidence on these psychosocial factors to one of the largest countries in the Middle East, and suggest that it may be worthwhile to develop strategies aimed at tackling stigma around psychosis and integrate the role of religiosity and social support in mental ill-health prevention and therapy.


Asunto(s)
Trastornos Psicóticos , Estigma Social , Apoyo Social , Humanos , Masculino , Femenino , Adulto , Trastornos Psicóticos/psicología , Irán , Adulto Joven , Funcionamiento Psicosocial , Índice de Severidad de la Enfermedad , Estudios Transversales , Escalas de Valoración Psiquiátrica , Autoimagen
20.
Trials ; 24(1): 52, 2023 Jan 23.
Artículo en Inglés | MEDLINE | ID: mdl-36691039

RESUMEN

We unfortunately need to make an update to our published study protocol that describes a significant change in the design of the study. The Committee on Health Research Ethics of the Capital Region Denmark recently rejected the approval of changing the primary outcome in the trial, on the invariable grounds that the trial has already commenced. It is therefore necessary to retain the Green Paranoid Thought Scale (GPTS) part B, ideas of persecution, as our primary outcome, and GPTS part A, ideas of social reference, as a secondary outcome, which is described opposite in our published study protocol. The exchange of outcomes has not affected participation in our trial or the informed consent. Intervention in both groups and assessments are unchanged. The two outcomes together constitute GPTS and the unifying concept we attempt to treat, namely paranoid ideations. As this is a blinded, methodologically rigorous trial, we did not have-and still do not have-access to preliminary data, and therefore, we have no knowledge of the distribution of our two intervention groups nor the potential effect of the intervention. The power calculation remains unchanged irrespective of the selection of the primary outcome. We have been fully transparent with the changes in primary and secondary outcomes on ClinicalTrials.gov throughout the trial. Due to the considerations mentioned above, we assumed that there would not be any ethical implications of the change of primary outcome. We sincerely apologize for the irregularity caused because of this assumption.Trial registrationClinicalTrials.gov NCT04902066 . Initial release April 19th, 2021.


Asunto(s)
Terapia Cognitivo-Conductual , Trastornos Psicóticos , Esquizofrenia , Realidad Virtual , Humanos , Esquizofrenia/terapia , Trastornos Psicóticos/psicología , Resultado del Tratamiento , Miedo , Terapia Cognitivo-Conductual/métodos , Ensayos Clínicos Controlados Aleatorios como Asunto
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