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BACKGROUND: Clinical forecasting models have potential to optimize treatment and improve outcomes in psychosis, but predicting long-term outcomes is challenging and long-term follow-up data are scarce. In this 10-year longitudinal study, we aimed to characterize the temporal evolution of cortical correlates of psychosis and their associations with symptoms. DESIGN: Structural magnetic resonance imaging (MRI) from people with first-episode psychosis and controls (nâ =â 79 and 218) were obtained at enrollment, after 12 months (nâ =â 67 and 197), and 10 years (nâ =â 23 and 77), within the Thematically Organized Psychosis (TOP) study. Normative models for cortical thickness estimated on public MRI datasets (nâ =â 42â 983) were applied to TOP data to obtain deviation scores for each region and timepoint. Positive and Negative Syndrome Scale (PANSS) scores were acquired at each timepoint along with registry data. Linear mixed effects models assessed effects of diagnosis, time, and their interactions on cortical deviations plus associations with symptoms. RESULTS: LMEs revealed conditional main effects of diagnosis and timeâ ×â diagnosis interactions in a distributed cortical network, where negative deviations in patients attenuate over time. In patients, symptoms also attenuate over time. LMEs revealed effects of anterior cingulate on PANSS total, and insular and orbitofrontal regions on PANSS negative scores. CONCLUSIONS: This long-term longitudinal study revealed a distributed pattern of cortical differences which attenuated over time together with a reduction in symptoms. These findings are not in line with a simple neurodegenerative account of schizophrenia, and deviations from normative models offer a promising avenue to develop biomarkers to track clinical trajectories over time.
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Importance: Adolescence is a critical developmental phase when mental health disorders, such as anxiety and depression, often emerge. Stringent public health measures and quarantine mandates during the COVID-19 pandemic could threaten adolescent mental health. Objective: To investigate the associations of public health measures and quarantine experiences with mental distress among Norwegian adolescents and to explore if certain vulnerability factors moderate these associations. Design, Setting, and Participants: This longitudinal cohort study used repeated measures to capture variations in mental distress explained by the stringency of public health measures and quarantine experiences. Data from the Norwegian Mother, Father, and Child cohort study were linked to national health registries and a national stringency index from April 1, 2020, to February 17, 2021. Participant included 7787 Norwegian adolescents aged 16 to 18 years. Data were analyzed from October 2022 to October 2023. Exposures: Stringency index of public health measures and quarantine experiences including recent quarantine (within the last 2 weeks) and quarantine frequency (cumulative number of quarantine episodes). Main Outcome and Measures: Mental distress was measured using the Hopkins Symptom Checklist across 6 data collection waves. Results: In this study, 7787 participants were included in the analysis (4473 female [57%]; mean [SD] age, 17.0 [0.6] years). Stringent public health measures (ß = 0.18; SE, 0.02; P < .001), recent quarantine (ß = 0.11; SE, 0.02; P < .001), and frequent quarantine (ß = 0.08; SE, 0.01; P < .001) were associated with higher levels of mental distress. The associations between public health measures and mental distress were not moderated by sex, age, prepandemic anxiety or depression, or genetic liability for mental health conditions. Frequency of quarantine appeared to be more strongly associated with mental distress among younger adolescents (ß = -0.04; SE, 0.01; P = .008), those with parents with lower education (ß = -0.04; SE, 0.01; P = .007), and those with lower genetic risk for depression (ß = -0.03; SE, 0.01; P = .006). Conclusions and Relevance: In this study, younger adolescents, those with parents with lower education, or those with low genetic liability for depression appeared more vulnerable when being quarantined several times. These findings emphasize the need for targeted support strategies to better protect adolescent well-being during future crises. Adolescents who experienced increased mental distress during the COVID-19 pandemic may be at risk of continued mental health problems and in need of ongoing support.
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COVID-19 , Salud Mental , Pandemias , Cuarentena , SARS-CoV-2 , Humanos , COVID-19/psicología , COVID-19/epidemiología , COVID-19/prevención & control , Adolescente , Cuarentena/psicología , Femenino , Masculino , Noruega/epidemiología , Estudios Longitudinales , Salud Mental/estadística & datos numéricos , Depresión/epidemiología , Depresión/psicología , Ansiedad/epidemiología , Ansiedad/psicologíaRESUMEN
PURPOSE: Psychotropic and somatic medications are both used in treating severe mental disorders (SMDs). Realistic estimates of the prevalence of use across medication categories are needed. We obtained this in a clinical cohort of patients with SMD and healthy controls (HCs). MATERIALS AND METHODS: Prescriptions filled at Norwegian pharmacies the year before and after admittance to the Thematically Organized Psychosis (TOP) study were examined in 1406 patients with SMD (mean age 32.5 years, 48.2% women) and 920 HC (34.1 years, 46.2% women). Using data from the Norwegian Prescription Database (NorPD), the number of users in different anatomical therapeutic chemical (ATC) categories was compared using logistic regression. Population estimates were used as reference data. RESULTS: Use of antipsychotics (N05A), antiepileptics (N03A), antidepressants (N06A), anxiolytics (N05B), hypnotics and sedatives (N05C), anticholinergics (N04A), psychostimulants, attention deficit hyperactivity disorder and nootropic agents (N06B) and drugs for addiction disorders (N07B) was significantly more prevalent in patients with SMD than HC. Use of diabetes treatment (A10), antithrombotic drugs (B01), beta blockers (C07), lipid modifiers (C10), and thyroid and endocrine therapeutics (H03) was also more prevalent in patients with SMD, but with two exceptions somatic medication use was comparable to the general population. Among HC, there was low prevalence of use for most medication categories. CONCLUSION: Patients were using psychiatric medications, but also several types of somatic medications, more often than HC. Still, somatic medication use was mostly not higher than in the general population. The results indicate that HC had low use of most medication types.
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Antipsicóticos , Trastorno por Déficit de Atención con Hiperactividad , Trastornos Mentales , Humanos , Femenino , Adulto , Masculino , Psicotrópicos/uso terapéutico , Trastornos Mentales/tratamiento farmacológico , Trastornos Mentales/epidemiología , Antidepresivos/uso terapéutico , Antipsicóticos/uso terapéutico , Hipnóticos y Sedantes/uso terapéutico , Prescripciones de Medicamentos , Trastorno por Déficit de Atención con Hiperactividad/tratamiento farmacológicoRESUMEN
BACKGROUND: Recent reports have described challenges in retaining and recruiting psychiatrists in public mental health care. To improve the work situation for doctors, the Norwegian Psychiatric Association (NPA) conducted surveys to explore job satisfaction among its members. The purpose of this study is to explore how doctors in mental health services perceive their work, and factors affecting their job satisfaction. MATERIAL AND METHODS: A Questback survey was sent to all employed members of NPA in June 2020 and in December 2021. In the first survey, 670 members (37%) responded and 903 (43%) in the second. Job satisfaction was measured on a Likert scale from one to five. Linear regression was used to examine associations between work-related factors and job satisfaction. RESULTS: In 2021, more than half of the respondents (56%) were satisfied, 16% were dissatisfied and 27% were neutral. The oldest and youngest doctors were most satisfied (p < 0.001). Partial treatment responsibility was related to reduced job satisfaction (ß = -0.23, p < 0.001) as well as access to an experienced colleague (ß = 0.39, p < 0.001), time for direct patient contact (ß = 0.17, p < 0.001) and ability to treat patients in a satisfactory manner (ß = 0.52, p < 0.001). Job satisfaction decreased from 2020 to 2021. CONCLUSIONS: Psychiatrists seem to be torn between treating their own patients and having medically responsible for other therapists' patients. Time for patient contact and discussions with colleagues are crucial for psychiatrists' well-being at work.
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Servicios de Salud Mental , Médicos , Psiquiatría , Humanos , Satisfacción en el Trabajo , Médicos/psicología , Encuestas y CuestionariosRESUMEN
Objectives: To identify factors associated with change in mental distress at the onset of the COVID-19 pandemic, relative to pre-pandemic levels, and with changes during the following 1.5 years. Methods: The prospective Norwegian Mother, Father and Child Cohort Study collected eight waves of data during the pandemic (March 2020-September 2021) in 105,972 adult participants used for this analyses. A piecewise latent growth model was fitted to identify initial level and longitudinal changes in mental distress. Results: Mental distress peaked at the beginning of the pandemic. Factors associated with initial increases were: medical conditions, living alone, history of psychiatric disorders, lower education, female sex, younger age, and obesity. Being quarantined or infected with SARS-CoV-2 were associated with increasing distress while being vaccinated was associated with reduced mental distress. Conclusion: Having a chronic disease and being quarantined or infected by the SARS-CoV-2 virus were associated with more mental distress during the pandemic. This knowledge is important for planning interventions to support individuals during future pandemics and other societal crises.
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COVID-19 , Trastornos Mentales , Adulto , Femenino , Humanos , Masculino , Estudios de Cohortes , COVID-19/epidemiología , Trastornos Mentales/epidemiología , Trastornos Mentales/psicología , Pandemias/prevención & control , Estudios Prospectivos , SARS-CoV-2RESUMEN
BACKGROUND: During the COVID-19 pandemic, individuals with pre-existing mental health problems may have experienced additional stress, which could worsen symptoms or trigger relapse. Thus, this study aimed to investigate if the number of consultations with general practitioners (GPs) among individuals with a pre-existing common mental health problem during the pandemic differed from pre-pandemic years. METHODS: Data on consultations with GPs among 18-65-year-olds registered with common mental health problems in 2017-2021 were retrieved from the Norwegian Control and Payment of Health Reimbursements Database. Based on data from the pre-pandemic years (2017-2019), we predicted the number of consultations per week for depression, anxiety disorder, phobia/obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and eating disorders during the pandemic (March 2020-December 2021) among individuals with pre-existing mental health problems. The forecasted and observed trends in GP consultations per week during the pandemic were stratified by diagnosis, gender, and age groups. RESULTS: The observed number of consultations for anxiety disorder, PTSD, and eating disorders were significantly higher than forecasted during extended periods of the two pandemic years. The differences were largest for PTSD (on average 37% higher in men and 47% higher in women during the pandemic), and for eating disorders among women (on average 87% higher during the pandemic). There were only minor differences between the predicted and observed number of consultations for depression and phobia/OCD. CONCLUSIONS: During the pandemic, individuals with a recent history of mental health problems were more likely to seek help for anxiety disorder, PTSD, and eating disorders, as compared to pre-pandemic years.
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COVID-19 , Médicos de Atención Primaria , Masculino , Humanos , Adulto , Femenino , COVID-19/epidemiología , COVID-19/psicología , Pandemias , Salud Mental , Noruega/epidemiologíaRESUMEN
BACKGROUND: There is a concern that exposure to psychosocial stressors during the COVID-19 pandemic may have led to a higher incidence of mental disorders. Thus, this study aimed to compare trends in incidence rates of depressive disorder, anxiety disorders, obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), and eating disorders in primary- and specialist health care before (2015-2019) and during the COVID-19 pandemic (2020-2021). METHODS: We used aggregated population registry data to calculate incidence rates of mental disorders from primary- (The Norwegian Control and Payment of Health Reimbursements Registry (KUHR)) and specialist (The Norwegian Patient Registry (NPR)) health care. The analyses included all Norwegian residents aged 18-65 during the study period. Incident cases were defined as having no previous registration with the same mental disorder in KUHR (from 2006) or NPR (from 2008). We used linear prediction models and mean models to compare incidence rates and test trends before and during the pandemic. RESULTS: During the pandemic, the incidence rates among women were higher or as predicted for OCD in specialist health care and for eating disorders in both primary- and specialist health care. These findings were strongest among women aged 18-24 years. Incidence rates for depression and phobia/OCD among both genders in primary health care and phobic anxiety disorders among both genders in specialist health care were lower or as predicted. CONCLUSION: The COVID-19 pandemic may have led to more women needing treatment for OCD and eating disorders in the Norwegian population. The decreased incidence rates for some disorders might indicate that some individuals either avoided seeking help or had improved mental health during the pandemic.
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COVID-19 , Trastornos de Alimentación y de la Ingestión de Alimentos , Trastornos Fóbicos , Masculino , Femenino , Humanos , Incidencia , Pandemias , COVID-19/epidemiologíaRESUMEN
INTRODUCTION: Psychotic-like experiences (PLE) have been associated with the subsequent emergence of psychotic disorders as well as several other domains of psychopathology. In this twin study, we estimated the genetic and environmental correlations between PLE and 10 personality disorders (PD). METHODS: Diagnoses of 10 PDs according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) and PLE from the Composite International Diagnostic Interview (CIDI) were retrieved for 2793 young adult twins from the Norwegian Twin Registry. Risk for having a PD and PLEs was modeled using item response theory. Biometric twin models were fitted to estimate the genetic and environmental correlations between PDs and PLEs. Co-twin control analysis was performed to estimate additional within-family risk for PLEs when having a PD. RESULTS: Phenotypic overlap between PDs and PLEs ranged from 14% to 44% in males and from 11% to 39% in females, with the highest overlap for borderline PD in both sexes. In general, we found higher genetic correlations (r = 0.14-0.72) than environmental correlations (r = 0.06-0.28) between PDs and PLEs. The highest genetic correlations between PLE and PDs were found for borderline (r = 0.72), paranoid (r = 0.56), schizotypal (r = 0.56) and antisocial PD (r = 0.49). CONCLUSION: We found that the co-occurrence between PDs and PLE is the best explained by shared genetic determinants, with minor contributions from environmental factors. Interestingly, borderline PD was highly genetically correlated with PLE, warranting molecular genetic studies of this association.
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Trastorno de Personalidad Limítrofe , Trastornos Psicóticos , Masculino , Femenino , Humanos , Adulto Joven , Factores de Riesgo , Trastornos de la Personalidad/epidemiología , Trastornos de la Personalidad/genética , Trastornos de la Personalidad/diagnóstico , Gemelos , Trastornos Psicóticos/epidemiología , Trastornos Psicóticos/genética , Manual Diagnóstico y Estadístico de los Trastornos MentalesRESUMEN
BACKGROUND AND HYPOTHESIS: Around 5%-7% of the adult population are estimated to have lifetime psychotic experiences (PEs), which are associated with psychosis risk. PEs assessed with Community Assessment of Psychic Experiences (CAPE) are associated with psychosis but also non-psychotic disorders, which could be partly explained by CAPE indirectly capturing emotional symptoms. We investigated the psychometric properties of a shorter version, CAPE-9, and whether CAPE-9 scores are associated with lifetime psychotic or non-psychotic mental disorders after controlling for current anxiety and depressive symptoms. DESIGN: CAPE-9 questionnaire data were obtained from 29 021 men (42.4 ± 5.6 yrs.) from the Norwegian Mother, Father, and Child Cohort Study. We investigated CAPE-9 reliability and factor structure. Logistic regression was used to test effects of current anxiety and depressive symptoms (SCL-12) on associations between CAPE-9 scores and psychiatric diagnoses. RESULTS: CAPE-9 fit a previously reported 3-factor structure and showed good reliability. Twenty-six percent reported at least one lifetime PE. CAPE-9 scores were significantly associated with most psychiatric disorders (schizophrenia, depression, bipolar disorder, substance abuse, anxiety, trauma-related disorders, and ADHD). After controlling for concurrent emotional symptoms, only associations with schizophrenia (OR = 1.29; 95% CI = 1.18-1.38) and trauma-related disorders (OR = 1.09; CI = 1.02-1.15) remained significant. CONCLUSIONS: CAPE-9 showed good psychometric properties in this large population-based adult male sample, and PEs were more clearly associated with psychotic disorders after controlling for current emotional symptoms. These results support the use of the short CAPE-9 as a cost-effective tool for informing public health initiatives and advancing our understanding of the dimensionality of psychosis.
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Trastornos Psicóticos , Esquizofrenia , Niño , Humanos , Masculino , Adulto , Estudios de Cohortes , Psicometría , Reproducibilidad de los Resultados , Trastornos Psicóticos/psicologíaRESUMEN
BACKGROUND: The role of doctors is changing, and mental health care is increasingly dominated by professional groups other than doctors. In this qualitative study, we investigated how psychiatrists perceive their role and position in mental health care. MATERIAL AND METHOD: Seven psychiatrists were given in-depth interviews based on an interview guide. The transcribed material was analysed using systematic text condensation. RESULTS: The interview material was grouped into four cross-cutting topic categories: Several informants perceived themselves as professional guarantors who step in when other interventions have failed. Many felt like guest workers in the therapeutic pathways of other professional groups, without an adequate framework for following up the patients properly. Some described the health authorities' prioritisation of mental health as a patient pathway bureaucracy, where more stringent demands for control and documentation of treatment and decisions to use coercive measures divert time and resources away from patient treatment. Several psychiatrists felt that unified management led to diffusion of responsibility, with an unclear distribution of professional responsibility between the interdisciplinary head of unit and the specialist. INTERPRETATION: The psychiatrists in the study appeared to have clear professional authority in the clinic, but their role seems to be under pressure. Interdisciplinary, unified line management, equal responsibility for treatment accorded to specialists in psychology, and the absence of psychiatrists in the management appear to have undermined the psychiatric perspective in mental health care.
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Médicos , Psiquiatría , Documentación , Humanos , Salud Mental , Médicos/psicología , Investigación CualitativaRESUMEN
BACKGROUND: Long-term use of opioids may have undesirable consequences. We have investigated long-term opioid use in patient groups that were prescribed opioids for various indications (chronic pain, palliative care, other (white prescriptions, not generally covered by the Norwegian National Insurance Scheme)) as well as the groups' concomitant use of some other addictive medications. MATERIAL AND METHOD: Persons registered in the Norwegian Prescription Database with at least one filled prescription of an opioid in the period 2011-19 were included. Long-term use in a calendar year was defined as the dispensing of > 180 defined daily doses or > 4 500 mg oral morphine equivalents distributed over at least 3 periods of 3 months. RESULTS: The number of long-term opioid users was 50 422 in 2011 and 59 996 in 2019 (10.1 and 10.7 % of all opioid users). The number who received opioids on blue prescription (partly covered by the Norwegian National Insurance Scheme) for chronic pain increased in the period by 9 952 persons, but the majority (n=38 006, 63.3 %) continued to receive opioids exclusively on white prescription in 2019. A total of 15 623 (41.1 %) and 14 881 (39.2 %), respectively, of the long-term opioid users who received opioids solely on white prescription in 2019 also received benzodiazepines and Z-hypnotics in the same year. Of the 23 967 long-term users who also received benzodiazepines, 88 % were dispensed opioids and benzodiazepines on the same day at least once in 2019. INTERPRETATION: Prolonged prescribing of opioids on white prescription and concurrent prescribing of other addictive drugs may indicate undesirable use with no clear indication.
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Analgésicos Opioides , Dolor Crónico , Analgésicos Opioides/efectos adversos , Benzodiazepinas/efectos adversos , Dolor Crónico/tratamiento farmacológico , Prescripciones de Medicamentos , Humanos , Hipnóticos y SedantesRESUMEN
BACKGROUND: Individuals suffering from schizophrenia have a reduced life expectancy with cardiovascular disease (CVD) as a major contributor. Low educational attainment is associated with schizophrenia, as well as with all-cause and CVD mortality. However, it is unknown to what extent low educational attainment can explain the increased mortality in individuals with schizophrenia. AIM: Here, we quantify associations between educational attainment and all-cause and CVD mortality in individuals with schizophrenia, and compare them with the corresponding associations in the general population. METHOD: All Norwegian citizens born between January 1, 1925, and December 31, 1959, were followed up from January 1, 1990, to December 31, 2014. The total sample included 1,852,113 individuals, of which 6548 were registered with schizophrenia. We estimated hazard ratios (HR) for all-cause and CVD mortality with Cox models, in addition to life years lost. Educational attainment for index persons and their parents were included in the models. RESULTS: In the general population individuals with low educational attainment had higher risk of all-cause (HR: 1.48 [95% CI: 1.47-1.49]) and CVD (HR: 1.59 [95% CI: 1.57-1.61]) mortality. In individuals with schizophrenia these estimates were substantially lower (all-cause: HR: 1.13 [95% CI: 1.05-1.21] and CVD: HR: 1.12 [95% CI: 0.98-1.27]). Low educational attainment accounted for 3.28 (3.21-3.35) life years lost in males and 2.48 (2.42-2.55) years in females in the general population, but was not significantly associated with life years lost in individuals with schizophrenia. Results were similar for parental educational attainment. CONCLUSIONS: Our results indicate that while individuals with schizophrenia in general have lower educational attainment and higher mortality rates compared with the general population, the association between educational attainment and mortality is smaller in schizophrenia subjects than in the general population.
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Enfermedades Cardiovasculares , Esquizofrenia , Enfermedades Cardiovasculares/epidemiología , Escolaridad , Femenino , Humanos , Masculino , Modelos de Riesgos Proporcionales , Factores de Riesgo , Esquizofrenia/epidemiologíaAsunto(s)
COVID-19 , Trastornos Mentales , Estudios de Cohortes , Humanos , Trastornos Mentales/epidemiología , Salud MentalRESUMEN
PURPOSE: To investigate the mortality in both in- and outpatients with personality disorders (PD), and to explore the association between mortality and comorbid substance use disorder (SUD) or severe mental illness (SMI). METHODS: All residents admitted to Norwegian in- and outpatient specialist health care services during 2009-2015 with a PD diagnosis were included. Standardized mortality ratios (SMRs) with 95% confidence intervals (CI) were estimated in patients with PD only and in patients with PD and comorbid SMI or SUD. Cox proportional hazards models were used to estimate adjusted hazard ratios (HRs) with 95% CIs in patients with PD and comorbid SMI or SUD compared to patients with PD only. RESULTS: Mortality was increased in both in- and outpatients with PD. The overall SMR was 3.8 (95% CI 3.6-4.0). The highest SMR was estimated for unnatural causes of death (11.0, 95% CI 10.0-12.0), but increased also for natural causes of death (2.2, 95% CI 2.0-2.5). Comorbidity was associated with higher SMRs, particularly due to poisoning and suicide. Patients with comorbid PD & SUD had almost four times higher all-cause mortality HR than patients with PD only; young women had the highest HR. CONCLUSION: The SMR was high in both in- and outpatients with PD, and particularly high in patients with comorbid PD & SUD. Young female patients with PD & SUD were at highest risk. The higher mortality in patients with PD cannot, however, fully be accounted for by comorbidity.
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Trastornos Mentales , Trastornos Relacionados con Sustancias , Suicidio , Causas de Muerte , Comorbilidad , Femenino , Humanos , Trastornos Mentales/epidemiología , Trastornos de la Personalidad/epidemiología , Trastornos Relacionados con Sustancias/epidemiologíaRESUMEN
Individuals with schizophrenia or substance use disorder have a substantially increased mortality compared to the general population. Despite a high and probably increasing prevalence of comorbid substance use disorder in people with schizophrenia, the mortality in the comorbid group has been less studied and with contrasting results. We performed a nationwide open cohort study from 2009 to 2015, including all Norwegians aged 20-79 with schizophrenia and/or substance use disorder registered in any specialized health care setting in Norway, a total of 125,744 individuals. There were 12,318 deaths in the cohort, and total, sex-, age- and cause-specific standardized mortality ratios (SMRs) were calculated, comparing the number of deaths in patients with schizophrenia, schizophrenia only, substance use disorder only or a co-occurring diagnosis of schizophrenia and substance use disorder to the number expected if the patients had the age-, sex- and calendar-year specific death rates of the general population. The SMRs were 4.9 (95% CI 4.7-5.1) for all schizophrenia patients, 4.4 (95% CI 4.2-4.6) in patients with schizophrenia without substance use disorder, 6.6 (95% CI 6.5-6.8) in patients with substance use disorder only, and 7.4 (95% CI 7.0-8.2) in patients with both schizophrenia and substance use disorder. The SMRs were elevated in both genders, in all age groups and for all considered causes of death, and most so in the youngest. Approximately 27% of the excess mortality in all patients with schizophrenia was due to the raised mortality in the subgroup with comorbid SUD. The increased mortality in patients with schizophrenia and/or substance use disorder corresponded to more than 10,000 premature deaths, which constituted 84% of all deaths in the cohort. The persistent mortality gap highlights the importance of securing systematic screening and proper access to somatic health care, and a more effective prevention of premature death from external causes in this group.
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Esquizofrenia/mortalidad , Trastornos Relacionados con Sustancias/mortalidad , Adulto , Anciano , Causas de Muerte , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Mortalidad , Noruega/epidemiología , Sistema de Registros , Esquizofrenia/complicaciones , Esquizofrenia/epidemiología , Trastornos Relacionados con Sustancias/complicaciones , Trastornos Relacionados con Sustancias/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Mental disorders often have onset early in life, contribute substantially to the global disease burden, and may interfere with young people's ability to complete age-relevant tasks in important developmental periods. However, knowledge about prevalence and course of mental disorders in young adulthood is sparse. The aim of the current study was to estimate prevalence and stability of mental disorders from the twenties to the thirties/forties. METHODS: DSM-IV mental disorders were assessed with the Composite International Diagnostic Interview in two waves (1999-2004 and 2010-2011) in 1623 young adult Norwegian twins (63.2% women, aged 19-29 years in wave 1). RESULTS: In wave 1, the 12-month prevalence of any mental disorder among people in the twenties was 19.8% (men) and 32.4% (women), anxiety disorders: 9.6% (men) and 26.7% (women), anxiety disorders excluding specific phobias: 2.5% (men) and 6.9% (women), major depressive disorder (MDD): 4.4% (men) and 7.2% (women), and alcohol use disorder (AUD): 8.7% (men) and 4.4% (women). The prevalence of any mental disorder decreased from the twenties to the thirties/forties. This was due to a decrease in AUD and specific phobias. Anxiety disorders in the twenties predicted anxiety disorders and MDD ten years later, even when controlling for the association between these disorders in the twenties. MDD in the twenties predicted MDD ten years later. At both ages, two-week and 12-month prevalence estimates differed markedly for MDD - indicating an episodic course. CONCLUSIONS: Common mental disorders are highly prevalent among young adults in the twenties, and somewhat less prevalent in the thirties/forties. Those who suffer from one mental disorder in the twenties are at considerably increased risk for suffering from a disorder ten years later as well. This may have significant implications for young people's ability to attain education, establish a family, and participate in occupational life.
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Alcoholismo/epidemiología , Trastornos de Ansiedad/epidemiología , Trastorno Depresivo Mayor/epidemiología , Trastornos Fóbicos/epidemiología , Gemelos/psicología , Adolescente , Adulto , Alcoholismo/diagnóstico , Trastornos de Ansiedad/diagnóstico , Trastorno Depresivo Mayor/diagnóstico , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Trastornos Fóbicos/diagnóstico , Prevalencia , Pronóstico , Adulto JovenRESUMEN
BACKGROUND AND AIMS: Individual differences in DSM-IV personality disorders (PDs) are associated with increased prevalence of substance use disorders. Our aims were to determine which combination of PDs trait scores best predict cannabis use (CU) and cannabis use disorder (CUD), and to estimate the size and significance of genetic and environmental risks in PD traits shared with CU and CUD. DESIGN: Linear mixed-effects models were used to identify PD traits for inclusion in twin analyses to explore the genetic and environmental associations between the traits and cannabis use. SETTING: Cross-sectional data were obtained from Norwegian adult twins in a face-to-face interview in 1999-2004 as part of a population-based study of mental health. PARTICIPANTS: Subjects were 1419 twins (µage = 28.2 years, range = 19-36) from the Norwegian Institute of Public Health Twin Panel with complete PD and cannabis data. MEASUREMENTS: PD traits were assessed using DSM-IV criteria. Life-time CU and CUD were based on DSM-IV abuse and dependence criteria, including withdrawal and craving. FINDINGS: After adjusting for age and sex, antisocial [ß = 0.23, 95% confidence interval (CI) = 0.19-0.28] and borderline PDs (ß = 0.20, 95% CI = 0.14-0.26) were associated strongly with CU. Antisocial (ß = 0.26, 95% CI = 0.21-0.31) and borderline PDs (ß = 0.12, 95% CI = 0.06-0.18) were also linked strongly to CUD. Genetic risks in antisocial and borderline PD traits explained 32-60% of the total variance in CU and CUD. Dependent and avoidant PDs explained 11 and 16% of the total variance in CU and CUD, respectively. CONCLUSIONS: Individual differences in the liability to cannabis use and cannabis use disorder appear to be linked to genetic risks correlated with antisocial and borderline personality disorder traits.