WHO World Mental Health Surveys Research Articles

Mental Health Conditions and Utilisation of Mental Health Services by Survivors of Physical Intimate Partner Violence in Portugal: Results from the WHO World Mental Health Survey

The aim of this article is to study mental health conditions among survivors of severe physical intimate partner violence (IPV) and their utilisation of mental health services. This study is an integrated part of the World Mental Health Survey Initiative-Portugal, for which data was collected from a nationally representative adult sample using well-validated scales. Logistic regression models were used in the analysis. The most common statistically significant mental health conditions among IPV survivors were suicide ideation, PTSD, major depressive episode, and generalised anxiety disorder. More than one in three survivors developed PTSD. Suicide ideation was likely to occur after first experiencing IPV. Almost a half of survivors received specialised mental health treatment; in most cases, delivered by a psychiatrist. Over 60% addressed their mental health issues consulting general physicians or other healthcare professionals. Those who experienced family violence in childhood had greater odds of also experiencing IPV; survivors of IPV with this experience were more likely to receive mental health treatment. The need to promote greater awareness and competencies of not only mental health professionals but also of general physicians and other healthcare professionals to provide support more effectively to survivors of any type of IPV deserves to be emphasised.

Low access and inadequate treatment in mental health care for asylum seekers and refugees in Germany-A prospective follow-up study over 12 months and a nationwide cross-sectional study.

Refugees experience elevated rates of mental health problems, but little is known about mental health service utilization and quality among asylum seekers and refugees in Europe. In a 12-month follow-up study of newly arrived refugees (N= 166, Mage = 32.38 years, 30.7% female) and a nationwide cross-sectional study (N= 579, Mage = 33.89 years, 36.2% female) of refugees who had been living in Germany for an average of 6 years, we examined objective need for mental health treatment, perceived need, access to treatment services, and adequacy of treatment. We defined minimally adequate mental health treatment according to the WHO World Mental Health Survey as ≥8 sessions of psychotherapy (minimally adequate psychotherapy) or pharmacotherapy plus ≥4 medical visits (minimally adequate pharmacotherapy). In both studies, two in three individuals screened for mental health symptoms and additionally perceived a need for professional treatment. Of those, less than half had contact to any service provider, with only 1 in 14 receiving minimally adequate psychotherapy. Overall, no more than one in seven of refugees in need received minimally adequate treatment. Despite a comprehensive mental health-care system, refugees' access to mental health care and the treatment provided are inadequate. Health policies are urgently needed to provide equitable mental health care for all.

Patterns, predictors, and patient-reported reasons for antidepressant discontinuation in the WHO World Mental Health Surveys.

Despite their documented efficacy, substantial proportions of patients discontinue antidepressant medication (ADM) without a doctor's recommendation. The current report integrates data on patient-reported reasons into an investigation of patterns and predictors of ADM discontinuation. Face-to-face interviews with community samples from 13 countries (n = 30 697) in the World Mental Health (WMH) Surveys included n = 1890 respondents who used ADMs within the past 12 months. 10.9% of 12-month ADM users reported discontinuation-based on recommendation of the prescriber while 15.7% discontinued in the absence of prescriber recommendation. The main patient-reported reason for discontinuation was feeling better (46.6%), which was reported by a higher proportion of patients who discontinued within the first 2 weeks of treatment than later. Perceived ineffectiveness (18.5%), predisposing factors (e.g. fear of dependence) (20.0%), and enabling factors (e.g. inability to afford treatment cost) (5.0%) were much less commonly reported reasons. Discontinuation in the absence of prescriber recommendation was associated with low country income level, being employed, and having above average personal income. Age, prior history of psychotropic medication use, and being prescribed treatment from a psychiatrist rather than from a general medical practitioner, in comparison, were associated with a lower probability of this type of discontinuation. However, these predictors varied substantially depending on patient-reported reasons for discontinuation. Dropping out early is not necessarily negative with almost half of individuals noting they felt better. The study underscores the diverse reasons given for dropping out and the need to evaluate how and whether dropping out influences short- or long-term functioning.

Perceived stigma and discrimination among persons with mood and anxiety disorders: Results from the WHO World Mental Health Survey Portugal

Background and objectivesThe stigma attached to mental disorders remains a public health challenge, represents an important barrier to healthcare and widens existing social inequalities.This study aimed to characterize the association between perceived stigma and mental disorders. The two main objectives were to estimate the association between perceived stigma and 12-month anxiety and mood disorders, and to assess the factors associated with perceived stigma among persons with these mental disorders. MethodsA nationally representative sample of the Portuguese population was used. Participants were Portuguese-speaking adults, aged 18 or above and residing in permanent dwellings in the country's mainland. The survey was administered by trained lay interviewers using a computer assisted personal interview (CAPI) on a face-to-face setting. ResultsThe results showed a two-fold increase in the likelihood of experiencing stigma among individuals with 12-month anxiety and mood disorders, slightly higher in the latter, when compared with individuals without. Among the sub-sample with these mental disorders, participants retired (or others), with psychiatric comorbidity and with co-occurrence of psychiatric and physical disorders had higher odds of reporting perceived stigma. ConclusionsThe findings of this study highlight the need to consider stigma as a public health priority in Portugal and to develop policies to create awareness and promote the social inclusion of persons with mental disorders.

Social anxiety disorder and childhood adversities in Portugal: Findings from the WHO world mental health survey initiative

Social anxiety disorder (SAD) is one of the most underrecognized and undertreated common mental disorders. This study aimed to describe its epidemiology and to understand the association between childhood adversities and SAD in the context of Portugal's collectivist culture. Data about SAD, childhood adversities, socio-demographic variables were collected from a nationally representative sample using well-validated scales employed for the World Mental Health Survey. Logistic and linear regression models were carried out to explore the association between childhood adversities and SAD prevalence and age of onset. The estimated lifetime prevalence of SAD was 4.68% and the 12-month prevalence was 3.14%. The mean age of onset was 13.6 ± 8.79. People with a college education had 3.42 higher odds of having SAD compared to people with no education or a primary school education. Most childhood adversities significantly increased the odds of a lifetime prevalence of SAD. Parental Maladjustment increased the odds of SAD when gender, age, and education were adjusted. The study findings show a relatively high prevalence of SAD in Portugal and confirms that females, younger people, students, and single people are more likely to have SAD. The study highlights the need to address experiences of parental maladjustment in interventions for people with SAD in Portugal.

Determinants of effective treatment coverage for major depressive disorder in the WHO World Mental Health Surveys

BackgroundMost individuals with major depressive disorder (MDD) receive either no care or inadequate care. The aims of this study is to investigate potential determinants of effective treatment coverage.MethodsIn order to examine obstacles to providing or receiving care, the type of care received, and the quality and use of that care in a representative sample of individuals with MDD, we analyzed data from 17 WHO World Mental Health Surveys conducted in 15 countries (9 high-income and 6 low/middle-income). Of 35,012 respondents, 3341 had 12-month MDD. We explored the association of socio-economic and demographic characteristics, insurance, and severity with effective treatment coverage and its components, including type of treatment, adequacy of treatment, dose, and adherence.ResultsHigh level of education (OR = 1.63; 1.19, 2.24), private insurance (OR = 1.62; 1.06, 2.48), and age (30–59yrs; OR = 1.58; 1.21, 2.07) predicted effective treatment coverage for depression in a multivariable logistic regression model. Exploratory bivariate models further indicate that education may follow a dose—response relation; that people with severe depression are more likely to receive any services, but less likely to receive adequate services; and that in low and middle-income countries, private insurance (the only significant predictor) increased the likelihood of receiving effective treatment coverage four times.ConclusionsIn the regression models, specific social determinants predicted effective coverage for major depression. Knowing the factors that determine who does and does not receive treatment contributes to improve our understanding of unmet needs and our ability to develop targeted interventions.

Patterns and correlates of patient-reported helpfulness of treatment for common mental and substance use disorders in the WHO World Mental Health Surveys.

Patient-reported helpfulness of treatment is an important indicator of quality in patient-centered care. We examined its pathways and predictors among respondents to household surveys who reported ever receiving treatment for major depression, generalized anxiety disorder, social phobia, specific phobia, post-traumatic stress disorder, bipolar disorder, or alcohol use disorder. Data came from 30 community epidemiological surveys - 17 in high-income countries (HICs) and 13 in low- and middle-income countries (LMICs) - carried out as part of the World Health Organization (WHO)'s World Mental Health (WMH) Surveys. Respondents were asked whether treatment of each disorder was ever helpful and, if so, the number of professionals seen before receiving helpful treatment. Across all surveys and diagnostic categories, 26.1% of patients (N=10,035) reported being helped by the very first professional they saw. Persisting to a second professional after a first unhelpful treatment brought the cumulative probability of receiving helpful treatment to 51.2%. If patients persisted with up through eight professionals, the cumulative probability rose to 90.6%. However, only an estimated 22.8% of patients would have persisted in seeing these many professionals after repeatedly receiving treatments they considered not helpful. Although the proportion of individuals with disorders who sought treatment was higher and they were more persistent in HICs than LMICs, proportional helpfulness among treated cases was no different between HICs and LMICs. A wide range of predictors of perceived treatment helpfulness were found, some of them consistent across diagnostic categories and others unique to specific disorders. These results provide novel information about patient evaluations of treatment across diagnoses and countries varying in income level, and suggest that a critical issue in improving the quality of care for mental disorders should be fostering persistence in professional help-seeking if earlier treatments are not helpful.

Brief CBT Interventions May Stop Depression Before It Starts

Brief CBT Interventions May Stop Depression Before It Starts

Perceived helpfulness of treatment for social anxiety disorder: findings from the WHO World Mental Health Surveys.

To investigate the prevalence and predictors of perceived helpfulness of treatment in persons with a history of DSM-IV social anxiety disorder (SAD), using a worldwide population-based sample. The World Health Organization World Mental Health Surveys is a coordinated series of community epidemiological surveys of non-institutionalized adults; 27 surveys in 24 countries (16 in high-income; 11 in low/middle-income countries; N = 117,856) included people with a lifetime history of treated SAD. In respondents with lifetime SAD, approximately one in five ever obtained treatment. Among these (n = 1322), cumulative probability of receiving treatment they regarded as helpful after seeing up to seven professionals was 92.2%. However, only 30.2% persisted this long, resulting in 65.1% ever receiving treatment perceived as helpful. Perceiving treatment as helpful was more common in female respondents, those currently married, more highly educated, and treated in non-formal health-care settings. Persistence in seeking treatment for SAD was higher among those with shorter delays in seeking treatment, in those receiving medication from a mental health specialist, and those with more than two lifetime anxiety disorders. The vast majority of individuals with SAD do not receive any treatment. Among those who do, the probability that people treated for SAD obtain treatment they consider helpful increases considerably if they persisted in help-seeking after earlier unhelpful treatments.

Perceived helpfulness of service sectors used for mental and substance use disorders: Findings from the WHO World Mental Health Surveys

BackgroundMental healthcare is delivered across service sectors that differ in level of specialization and intervention modalities typically offered. Little is known about the perceived helpfulness of the combinations of service sectors that patients use.MethodsRespondents 18 + years with 12-month DSM-IV mental or substance use disorders who saw a provider for mental health problems in the year before interview were identified from WHO World Mental Health surveys in 17 countries. Based upon the types of providers seen, patients were grouped into nine mutually exclusive single-sector or multi-sector ‘treatment profiles’. Perceived helpfulness was defined as the patient’s maximum rating of being helped (‘a lot’, ‘some’, ‘a little’ or ‘not at all’) of any type of provider seen in the profile. Logistic regression analysis was used to examine the joint associations of sociodemographics, disorder types, and treatment profiles with being helped ‘a lot’.ResultsAcross all surveys combined, 29.4% (S.E. 0.6) of respondents with a 12-month disorder saw a provider in the past year (N = 3221). Of these patients, 58.2% (S.E. 1.0) reported being helped ‘a lot’. Odds of being helped ‘a lot’ were significantly higher (odds ratios [ORs] = 1.50–1.89) among the 12.9% of patients who used specialized multi-sector profiles involving both psychiatrists and other mental health specialists, compared to other patients, despite their high comorbidities. Lower odds of being helped ‘a lot’ were found among patients who were seen only in the general medical, psychiatrist, or other mental health specialty sectors (ORs = 0.46–0.71). Female gender and older age were associated with increased odds of being helped ‘a lot’. In models stratified by country income group, having 3 or more disorders (high-income countries only) and state-funded health insurance (low/middle-income countries only) were associated with increased odds of being helped ‘a lot’.ConclusionsPatients who received specialized, multi-sector care were more likely than other patients to report being helped ‘a lot’. This result is consistent with previous research suggesting that persistence in help-seeking is associated with receiving helpful treatment. Given the nonrandom sorting of patients by types of providers seen and persistence in help-seeking, we cannot discount that selection bias may play some role in this pattern.

ADHD Comorbidity Structure and Impairment: Results of the WHO World Mental Health Surveys International College Student Project (WMH-ICS)

Objective To examine the prevalence of ADHD and the association of comorbid disorders, and multivariate disorder classes with role impairment in college students. Method About 15,991 freshmen (24 colleges, 9 countries, WMH-ICS) (response rate = 45.6%) completed online WMH-CIDI-SC surveys for 6-month ADHD and six 12-month DSM-IV disorders. We examined multivariate disorder classes using latent class analysis (LCA) and simulated a population attributable risk proportions (PARPs) of ADHD-related impairment. Results About 15.9% had ADHD, of which 58.4% had comorbidities. LCA classified ADHD respondents to pure (42.9%), internalizing (36.0%), bipolar comorbidities (11.3%), and externalizing disorder classes (9.8%). ADHD, comorbidities, and multivariate disorder classes independently predicted severe impairment. PARPs: eliminating ADHD hypothetically reduced severe impairment by 19.2%, 10.1% adjusted for comorbidities, 9.5% for multivariate disorder classes. Conclusions ADHD and comorbid disorders are common and impairing in college students. Personalized transdiagnostic interventions guided by multivariate disorder classes should be explored.

Childhood adversities and the comorbidity between mood and general medical disorders in adults: Results from the WHO World Mental Health Survey Portugal

ObjectiveChildhood adversities have been linked to poor health outcomes in adults, including both mood and general medical disorders. Here we tested the hypothesis that childhood adversities specifically increase the risk of comorbidity between mood and general medical disorders, rather than increasing the risk of either one independently. MethodsMood disorders (DSM-IV major depressive, dysthymic and bipolar disorders), childhood adversities and general medical disorders were assessed in 2060 adults in the WHO World Mental Health Survey Portugal. Discrete-time survival analyses were used to investigate the association between mood disorders and subsequent first-onset general medical disorders and between general medical disorders and subsequent first-onset mood disorders, in adults. Discrete-time survival and multinomial regression analyses were used to test the influence of childhood adversities on the comorbidity between mood disorders and general medical disorders. Anxiety disorders were used as a psychiatric control. ResultsAdult-onset mood disorders were found to precede the onset of diabetes (OR:1.8; 95% CI:1.2–2.9), arthritis (OR:1.6; 95% CI:1.1–2.3) and seasonal allergies (OR:1.6; 95% CI:1.1–2.5) while adult-onset hypertension was found to precede the onset of mood disorders (OR:1.7; 95% CI:1.2–2.6). Maladaptive family functioning (abuse, neglect and parental maladjustment), was associated with mood disorders (OR:1.5; 95% CI:1.2–1.9), hypertension (OR:1.4; 95% CI:1.1–1.7), arthritis (OR:1.3; 95% CI:1.0–1.6) and seasonal allergies (OR:1.5; 95% CI:1.1–2.0) in adulthood. Finally, the effect of maladaptive family functioning in predicting comorbid mood disorders and arthritis significantly differed from its effect in predicting only arthritis (p ​= ​0.01), which was not observed for other comorbidities. Maladaptive family functioning further predicted comorbid anxiety disorders and hypertension. ConclusionChildhood adversities may be a specific risk factor for comorbid mood disorders and arthritis in adults.

Perceived helpfulness of treatment for generalized anxiety disorder: a World Mental Health Surveys report

BackgroundTreatment guidelines for generalized anxiety disorder (GAD) are based on a relatively small number of randomized controlled trials and do not consider patient-centered perceptions of treatment helpfulness. We investigated the prevalence and predictors of patient-reported treatment helpfulness for DSM-5 GAD and its two main treatment pathways: encounter-level treatment helpfulness and persistence in help-seeking after prior unhelpful treatment.MethodsData came from community epidemiologic surveys in 23 countries in the WHO World Mental Health surveys. DSM-5 GAD was assessed with the fully structured WHO Composite International Diagnostic Interview Version 3.0. Respondents with a history of GAD were asked whether they ever received treatment and, if so, whether they ever considered this treatment helpful. Number of professionals seen before obtaining helpful treatment was also assessed. Parallel survival models estimated probability and predictors of a given treatment being perceived as helpful and of persisting in help-seeking after prior unhelpful treatment.ResultsThe overall prevalence rate of GAD was 4.5%, with lower prevalence in low/middle-income countries (2.8%) than high-income countries (5.3%); 34.6% of respondents with lifetime GAD reported ever obtaining treatment for their GAD, with lower proportions in low/middle-income countries (19.2%) than high-income countries (38.4%); 3) 70% of those who received treatment perceived the treatment to be helpful, with prevalence comparable in low/middle-income countries and high-income countries. Survival analysis suggested that virtually all patients would have obtained helpful treatment if they had persisted in help-seeking with up to 10 professionals. However, we estimated that only 29.7% of patients would have persisted that long. Obtaining helpful treatment at the person-level was associated with treatment type, comorbid panic/agoraphobia, and childhood adversities, but most of these predictors were important because they predicted persistence rather than encounter-level treatment helpfulness.ConclusionsThe majority of individuals with GAD do not receive treatment. Most of those who receive treatment regard it as helpful, but receiving helpful treatment typically requires persistence in help-seeking. Future research should focus on ensuring that helpfulness is included as part of the evaluation. Clinicians need to emphasize the importance of persistence to patients beginning treatment.

Perceived helpfulness of treatment for specific phobia: Findings from the World Mental Health Surveys

BackgroundAlthough randomized trials show that specific phobia treatments can be effective, it is unclear whether patients experience treatment as helpful in clinical practice. We investigated this issue by assessing perceived treatment helpfulness for specific phobia in a cross-national epidemiological survey. MethodsCross-sectional population-based WHO World Mental Health (WMH) surveys in 24 countries (n=112,507) assessed lifetime specific phobia. Respondents who met lifetime criteria were asked whether they ever received treatment they considered helpful and the number of professionals seen up to the time of receiving helpful treatment. Discrete-event survival analysis was used to calculate conditional-cumulative probabilities of obtaining helpful treatment across number of professionals seen and of persisting in help-seeking after prior unhelpful treatment. Results23.0% of respondents reported receiving helpful treatment from the first professional seen, whereas cumulative probability of receiving helpful treatment was 85.7% after seeing up to 9 professionals. However, only 14.7% of patients persisted in seeing up to 9 professionals, resulting in the proportion of patients ever receiving helpful treatment (47.5%) being much lower than it could have been with persistence in help-seeking. Few predictors were found either of perceived helpfulness or of persistence in help-seeking after earlier unhelpful treatments. LimitationsRetrospective recall and lack of information about either types of treatments received or objective symptomatic improvements limit results. ConclusionsDespite these limitations, results suggest that helpfulness of specific phobia treatment could be increased, perhaps substantially, by increasing patient persistence in help-seeking after earlier unhelpful treatments. Improved understanding is needed of barriers to help-seeking persistence.

Editorial

Mental disorders both in adults as well as in children and adolescents are highly prevalent (e.g., Merikangas et al., 2010; The WHO World Mental Health Survey Consortium, 2004). Cognitive-behavioural therapy (CBT) is recommended as first-line treatment in an array of emotional and behaviour disorders, due to its vast empirical support (e.g., National Institute for Health and Care Excellence [NICE], 2020; Tollin, 2010; Walter et al., 2020). More recent third-wave approaches, namely Acceptance and Commitment Therapy (ACT), are also showing their effectiveness across disorders and age ranges (Fang & Ding, 2020; Gloster et al., 2020). Nevertheless, like every other scientific discipline, CBT is in constant evolution, awaiting new and innovative developments. Humans are so complex, and suffering in its multiple shapes is so prevalent that there is always room to develop new theories, to refine already existent theories, to improve practices and to increase dissemination. In this special issue of the journal Psychologica, several researchers and clinicians made valuable contributions, aiming at different populations (children, adolescents and adults), different phases of the life course (preschool, secondary school, expecting a first child), different approaches of CBT (second or third wave therapies), and different levels of action (developing assessment instruments, refining conceptualizations, building programs, developing new delivery formats, and disseminating knowledge). Let us give you a short-guided tour through the headlines of this special issue.

Childhood adversities and suicidal behavior in the general population. The cross-sectional PEGASUS-Murcia Project

IntroductionThe aim of the present study is to estimate the lifetime prevalence of suicidal ideation, plans, and attempts in a regional representative sample and the association of these outcomes with sociodemographic factors, prior mental disorders, and childhood adversities. Material and methodsThe PEGASUS-Murcia project is a cross-sectional survey of a representative sample of adults in Murcia that is part of the WHO World Mental Health Survey Initiative. The Composite International Diagnostic Interview (CIDI 3.0) was administered face-to-face to 2621 participants (67.4% response rate). The main outcomes were suicidal ideation, plans, and attempts. Lifetime prevalence, age of onset, and risk factors (sociodemographic variables, mental disorders, and childhood adversities) were examined using multiple discrete-time survival models. ResultsLifetime prevalence of suicidal ideation, plans and attempts were 8.0% (standard error, SE: 1.1), 2.1% (SE: 0.3), and 1.2% (SE: 1.1), respectively. Prevalence of any childhood adversities was 22.1% (SE: 1.3) in the total sample and, even higher, among those with suicide related outcomes (ranging between 36.8% and 53.7%). Female sex, younger age, prior (to onset of the outcome) lifetime prevalence of mood disorders, number of mental disorders, and exposure to childhood adversity were associated with significantly increased odds of suicidal ideation and plans. ConclusionsLifetime prevalence estimates of suicidality are similar to those in community epidemiological surveys. Childhood adversities and mental disorders, especially mood disorders, are important risk factors for suicidality. Early detection of these adversities and disorders should be targeted in suicide prevention programs.

The Saudi National Mental Health Survey: Survey instrument and field procedures.

ObjectivesTo present an overview of the survey and field procedures developed for the Saudi National Mental Health Survey (SNMHS).MethodsThe SNMHS is a face‐to‐face community epidemiological survey of DSM‐IV mental disorders in a nationally representative sample of the household population in the Kingdom of Saudi Arabia (KSA) (n = 4,004). The SNMHS was implemented as part of the WHO World Mental Health (WMH) Survey Initiative. WMH carries out coordinated psychiatric epidemiological surveys in countries throughout the world using standardized procedures designed to provide valid cross‐national comparative data on prevalence and correlates of common mental disorders. However, these procedures need to be adapted to the unique experiences in each country. We focus here on the adaptations made for the SNMHS.ResultsModifications were needed to several interview sections and expansions were needed to address issues of special policy importance in KSA. Several special field implementation challenges also had to be addressed because of the need for female interviewers to travel with male escorts and for respondents to be interviewed by interviewers of the same gender.ConclusionsThoughtful revisions led to a high‐quality field implementation in the SNMHS.

Health status and associated factors of HIV-infected patients in Kunming, China.

To assess health status of HIV-positive patients and to examine its predictors in Kunming, China. HIV-positive patients were recruited from a general hospital and an infection hospital in 2015. Health status of the patients was evaluated using standardized questions on eight health domains (mobility, self-care, pain and discomfort, cognition, interpersonal activities, vision, sleep and energy, and emotional distress) of the WHO World Health Survey. A multivariate linear regression model was employed to explore the predictors of health status. A total of 1,363 HIV patients were recruited. The mean (SD) health status score was 73.4 (18.2), with the prevalence of reporting problems ranging from 17.6% (self-care problems) to 86.3% (vision problems). CD4 count, occupation, household income, accessibility to healthcare services, and healthcare expenditures were found to be significant predictors of health status. Healthcare services for HIV patients may assist improvement of interpersonal activities and relieve emotional distress, and efforts are needed to continually increase accessibility to the services. Special attention should be given to those at low socioeconomic level and those suffering from low CD4 count.

Comorbidity within mental disorders: a comprehensive analysis based on 145 990 survey respondents from 27 countries.

Epidemiological studies indicate that individuals with one type of mental disorder have an increased risk of subsequently developing other types of mental disorders. This study aimed to undertake a comprehensive analysis of pair-wise lifetime comorbidity across a range of common mental disorders based on a diverse range of population-based surveys. The WHO World Mental Health (WMH) surveys assessed 145 990 adult respondents from 27 countries. Based on retrospectively-reported age-of-onset for 24 DSM-IV mental disorders, associations were examined between all 548 logically possible temporally-ordered disorder pairs. Overall and time-dependent hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using Cox proportional hazards models. Absolute risks were estimated using the product-limit method. Estimates were generated separately for men and women. Each prior lifetime mental disorder was associated with an increased risk of subsequent first onset of each other disorder. The median HR was 12.1 (mean = 14.4; range 5.2-110.8, interquartile range = 6.0-19.4). The HRs were most prominent between closely-related mental disorder types and in the first 1-2 years after the onset of the prior disorder. Although HRs declined with time since prior disorder, significantly elevated risk of subsequent comorbidity persisted for at least 15 years. Appreciable absolute risks of secondary disorders were found over time for many pairs. Survey data from a range of sites confirms that comorbidity between mental disorders is common. Understanding the risks of temporally secondary disorders may help design practical programs for primary prevention of secondary disorders.

Associations between neighborhood-level violence and individual mental disorders: Results from the World Mental Health surveys in five Latin American cities

Rapidly urbanizing areas of Latin America experience elevated but unevenly distributed levels of violence. Extensive research suggests that individual exposure to violence is associated with higher odds of both internalizing (anxiety and mood) and externalizing (substance and intermittent explosive) mental disorders. Less research, however, has focused on how neighborhood-level violence, as an indicator of broader neighborhood contexts, might relate to the mental health of residents, independently of an individual's personal exposure. We used multilevel analyses to examine associations of neighborhood-level violence with individual-level past-year mental disorders, controlling for individual-level violence exposure. We used data from 7,251 adults nested in 83 neighborhoods within five large Latin American cities as part of the WHO World Mental Health Surveys. Accounting for individual-level violence exposure, living in neighborhoods with more violence was associated with significantly elevated odds of individual-level internalizing disorders, but not externalizing disorders. Caution should be exercised when making causal inferences regarding the effects of neighborhood-level violence in the absence of experimental interventions. Nevertheless, neighborhood context, including violence, should be considered in the study of mental disorders. These findings are particularly relevant for rapidly urbanizing areas with high levels of violence, such as Latin America.