Leung Siu-Ngan. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2001. / Includes bibliographical references (leaves 72-74). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Background --- p.1 / Chapter 1.2 --- Structure and Contents of Data Sets --- p.6 / Chapter 2 --- Estimation of Prevalence of Mentally Disorders --- p.10 / Chapter 2.1 --- Likelihood Function Approach --- p.10 / Chapter 2.2 --- Maximum Likelihood Estimation via EM Algorithm --- p.13 / Chapter 2.3 --- The SEM Algorithm --- p.16 / Chapter 3 --- Estimation of Lifetime Comorbidity --- p.24 / Chapter 3.1 --- What is Comorbidity? --- p.24 / Chapter 3.2 --- Likelihood Function Approach --- p.25 / Chapter 3.2.1 --- Likelihood Function Model --- p.27 / Chapter 3.2.2 --- Maximum Likelihood Estimation via EM Algorithm --- p.28 / Chapter 3.2.3 --- Odds Ratio --- p.31 / Chapter 4 --- Logistic Regression --- p.35 / Chapter 4.1 --- Imputation Method of Missing Values --- p.35 / Chapter 4.1.1 --- Hot Deck Imputation --- p.35 / Chapter 4.1.2 --- A logistic Regression Imputation Model for Dichotomous Response --- p.40 / Chapter 4.2 --- Combining Results from Different Imputed Data Sets --- p.47 / Chapter 4.3 --- Itemization on Screening --- p.60 / Chapter 4.3.1 --- Methods of Weighting on the Screening Questions --- p.61 / Chapter 4.3.2 --- Statistical Analysis --- p.62 / Chapter 5 --- Conclusion and Discussion --- p.68 / Appendix: SRQ Questionnaire --- p.69 / Bibliography --- p.72

Made available in DSpace on 2016-03-22T17:27:38Z (GMT). No. of bitstreams: 1 dissert fabio coelho.pdf: 632992 bytes, checksum: f19909ffb25c1ec4f3c3b48862ac3d45 (MD5) Previous issue date: 2006-04-14 / A cross-sectional population-based study was conducted to identify the prevalence of common mental disorders (CMD) and verify its association with chronic illnesses and the declared number of chronic conditions. The Self-Report Questionnaire (SRQ-20) was applied in a multi-stage random sample of 1276 adults aged 40 and older. Socio-demographic, behavioral and health-related variables were also obtained with a structured questionnaire. The CMD prevalence was 30.2%. Lower educational level and social class and the group 46- 55 years old were associated with psychiatric morbidity. Each chronic illness was associated with CMD. However, a stronger association was found between CMD and the declared number of chronic conditions, with a prevalence ratio of 4.67 (IC95%: 3.19 6.83) for five or more declared conditions. The present work emphasizes the importance of CMD in chronically ill patients, particularly when a greater number of chronic conditions is declared. / Estudo transversal de base populacional foi conduzido tendo como objetivos avaliar a prevalência dos transtornos mentais comuns (TMC) e verificar sua associação com determinadas enfermidades crônicas e com o número de doenças crônicas relatadas pelo indivíduo. Para a avaliação de TMC, o Self-Report Questionnaire (SRQ-20) foi aplicado em 1276 adultos com 40 anos ou mais, identificados por meio de amostragem aleatória em múltiplos estágios. O ponto de corte utilizado foi de 6 ou mais pontos para homens e 8 ou mais pontos para as mulheres. Variáveis sócio-demográficas, comportamentais e relacionadas à saúde foram obtidas por meio de um questionário estruturado. Os TMC apresentaram uma prevalência de 30,2%, estando associados à baixa escolaridade e classe social, e à faixa etária de 46 a 65 anos. Todas as doenças crônicas pesquisadas mostraram-se associadas aos TMC, mesmo após ajuste para as demais variáveis. Entretanto, o número de enfermidades apresentadas pelo indivíduo teve maior importância do que cada uma delas individualmente, com uma razão de prevalência (RP) de 4,67 com intervalo de confiança de 95% (IC95%) de 3,19 6,83 para cinco ou mais doenças relatadas. O presente estudo realça a importância de se atentar para os transtornos mentais em indivíduos com enfermidades crônicas, principalmente naqueles que se apresentam com um grande número de doenças.

PDSE are common (19.6%) in the local stroke population. Both premorbid factors as well as stroke-related factors contribute to the development of PRSD and PSDE. The application of different diagnostic criteria for PSDE will affect the frequency and the associated radiological characteristics. As regards the screening methods of PSDE, a more specific instrument should supplement the IQCODE or MDRS-IP in a two-stage screening procedure. / PSD is also common (16--17%) among local stroke survivors. Both psychosocial factors and the location of cerebrovascular lesions play an important role in the development of PSD. PSD in local Chinese seems to have a favorable short-term outcome in comparison with their Caucasian counterparts. With regard to the screening of PSD in Chinese, we found that both the GDS and HADS depression subscale have a satisfactory response rate and accuracy in detecting PSD. However, due to the relative low frequency of PSD in the local stroke population, a more specific instrument should supplement the GDS in a two-stage screening procedure. Finally, the familiarity of the rater with the subjects based on a preexisting therapeutic relationship did not influence the accuracy of screening for PSD in Chinese patients. / There has been a paucity of data on the frequency, clinical correlates and methods of screening of poststroke dementia (PSDE) and depression (PSD) in Chinese populations. The objective of this thesis is to examine the prevalence, diagnostic criteria and clinical correlates of PSDE and PSD in Chinese stroke patients in Hong Kong. A series of studies were all carried out; the author of the thesis had interviewed all the subjects 1--3 months after their index stroke and made the diagnosis of dementia and depression according to the DSM-IV criteria. / Tang Wai Kwong. / "July 2005." / Adviser: Gabor S. Ungvari. / Source: Dissertation Abstracts International, Volume: 67-01, Section: B, page: 0177. / Thesis (M.D.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (p. 136-191). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / School code: 1307.

ANTECEDENTES: Sintomas somatoformes são freqüentes e estão associados com sofrimento mental na população geral e em diversos níveis de atenção. Grande parte da interações que subjazem a estas associações são pouco conhecidas ou mesmo desconhecidas. OBJETIVOS E MÉTODOS: A partir de revisão bibliográfica, investigar: a) a história dos quadros clínicos de somatização; b) suas diversas categorias segundo conceitos contemporâneos psiquiátricos e não-psiquiátricos (transtornos somatoformes, transtornos dissociativos-conversivos, síndrome da fadiga crônica, fibromialgia, síndrome do cólon irritável etc.); c) fatores associados e hipóteses etiológicas para estes fenômenos. Através de dados provenientes do Estudo de Área de Captação do Instituto de Psiquiatria do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (Andrade et al., 1994) - um estudo transversal de morbidade física e psiquiátrica que entrevistou uma amostra representativa dos bairros paulistanos de Vila Madalena e Jardim América - explorar a prevalência e classificação de sintomas físicos relatados, em especial aqueles sem explicação médica (SEM). Avaliar através de regressão logística as associações entre: a) síndromes somatoformes e variáveis demográficas; b) síndromes somatoformes e uso de medicamentos e serviços de saúde; c) sintomas físicos de qualquer tipo (QT) e SEM com variáveis demográficas; e d) sintomas físicos QT e SEM com transtornos mentais. Pesquisar, através de análise de classes latentes de respostas dicotômicas para a presença ou não de 36 sintomas físicos SEM: a) agrupamento de indivíduos em classes (análise de aglomeração, ou cluster); e b) agrupamento de sintomas em dimensões (análise fatorial). Foram realizadas 1.464 entrevistas com o Composite International Diagnostic Interview (CIDI), entrevista estruturada diagnóstica para transtornos mentais, incluindo transtornos somatofomes e dissociativos; e um caderno de variáveis demográficas, doenças físicas crônicas, uso de serviços médicos ou psicológico e consumo de medicamentos. RESULTADOS: Ausência de associação entre síndomes somatoformes e variáveis demográficas. Associação entre síndromes somatoformes e maior uso de serviços de saúde e de medicamentos. Associação de características demográficas com certos sintomas físicos QT e SEM. Sintomas físicos QT e SEM estão associados com transtornos mentais de uma forma geral. Alguns sintomas físicos (desmaios, dispnéia, dores no peito, dores nos membros, formigamento, metrorragia, fraqueza muscular, nó na garganta, poliúria, taquicardia e tonturas) encontram-se associados com vários dos transtornos mentais testados. Os indivíduos se aglomeraram em duas classes, uma pauci- e outra polissintomática; a classe polissintomática se mostrou associada com doenças físicas, transtornos mentais e uso de serviços de saúde. Os sintomas se agruparam em um único fator, indicando a existência de uma dimensão de somatização na população geral. / BACKGROUND: Somatoform symptoms are frequent and are associated with mental distress in several settings and in the general population. Many of these interactions are not well understood or not understood at all. OBJECTIVE AND METHODS: Based on bibliographical research, to investigate: a) the history of somatization-related illnesses; b) its many categories according to contemporary psychiatric and non-psychiatric concepts (somatoform disorders, dissociative-conversive disorders, chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome etc.); c) associated factors and etiological hypothesis for these phenomena. Using data available from the University of São Paulo Institute of Psychiatry Epidemiologic Catchment Area Study (Andrade et al., 1994) - a cross-sectional survey of physical and psychiatric morbidity which interviewed a representative sample of São Paulo city boroughs of Vila Madalena and Jardim América - to explore the prevalence and classification of reported physical symptoms in general, and specifically those which are medically unexplained (MU). To appraise, using logistic regression, the following associations: a) somatoform syndromes and demographic variables; b) somatoform syndromes and use of medication and health services; c) MU symptom and any type (AT) of symptom with demographic variables; and d) MU and AT physical symptoms with mental disorders. To probe, through latent class analysis of yes or no answers for 36 MU physical symptoms: grouping of subjects in classes (cluster analysis); and b) grouping of symptoms in dimensions (factor analysis). One-thousand, four-hundred and sixty-four interviews were performed using the Composite International Diagnostic Interview (CIDI), structured diagnostic interview for mental disorders, including somatoform and dissociative disorders; and a form of demographic variables, chronic physical diseases, use of medical and psychological services and medication intake. RESULTS: No association between somatoform syndromes and demographic variables. Association between somatoform syndromes and increased use of services and medication intake. Association between demographic variables and certain MU/AT symptoms. Physical symptoms AT/MU are associated with mental disorders, in general. Some physical symptoms (fainting, dyspnea, chest pain, arm or leg pain, tingling, heavy menses, muscle weakness, lump in throat, polyuria, palpitations and dizziness) are associated with many of the studied mental disorders. Subjects were clustered into two classes, with low and high symptom scoring; the high scoring class was associated with physical diseases, mental disorders, use of health services and medication intake. Symptoms were grouped into one single factor, pointing to the existence of a somatization dimension in the general population.

ANTECEDENTES: Sintomas somatoformes são freqüentes e estão associados com sofrimento mental na população geral e em diversos níveis de atenção. Grande parte da interações que subjazem a estas associações são pouco conhecidas ou mesmo desconhecidas. OBJETIVOS E MÉTODOS: A partir de revisão bibliográfica, investigar: a) a história dos quadros clínicos de somatização; b) suas diversas categorias segundo conceitos contemporâneos psiquiátricos e não-psiquiátricos (transtornos somatoformes, transtornos dissociativos-conversivos, síndrome da fadiga crônica, fibromialgia, síndrome do cólon irritável etc.); c) fatores associados e hipóteses etiológicas para estes fenômenos. Através de dados provenientes do Estudo de Área de Captação do Instituto de Psiquiatria do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (Andrade et al., 1994) - um estudo transversal de morbidade física e psiquiátrica que entrevistou uma amostra representativa dos bairros paulistanos de Vila Madalena e Jardim América - explorar a prevalência e classificação de sintomas físicos relatados, em especial aqueles sem explicação médica (SEM). Avaliar através de regressão logística as associações entre: a) síndromes somatoformes e variáveis demográficas; b) síndromes somatoformes e uso de medicamentos e serviços de saúde; c) sintomas físicos de qualquer tipo (QT) e SEM com variáveis demográficas; e d) sintomas físicos QT e SEM com transtornos mentais. Pesquisar, através de análise de classes latentes de respostas dicotômicas para a presença ou não de 36 sintomas físicos SEM: a) agrupamento de indivíduos em classes (análise de aglomeração, ou cluster); e b) agrupamento de sintomas em dimensões (análise fatorial). Foram realizadas 1.464 entrevistas com o Composite International Diagnostic Interview (CIDI), entrevista estruturada diagnóstica para transtornos mentais, incluindo transtornos somatofomes e dissociativos; e um caderno de variáveis demográficas, doenças físicas crônicas, uso de serviços médicos ou psicológico e consumo de medicamentos. RESULTADOS: Ausência de associação entre síndomes somatoformes e variáveis demográficas. Associação entre síndromes somatoformes e maior uso de serviços de saúde e de medicamentos. Associação de características demográficas com certos sintomas físicos QT e SEM. Sintomas físicos QT e SEM estão associados com transtornos mentais de uma forma geral. Alguns sintomas físicos (desmaios, dispnéia, dores no peito, dores nos membros, formigamento, metrorragia, fraqueza muscular, nó na garganta, poliúria, taquicardia e tonturas) encontram-se associados com vários dos transtornos mentais testados. Os indivíduos se aglomeraram em duas classes, uma pauci- e outra polissintomática; a classe polissintomática se mostrou associada com doenças físicas, transtornos mentais e uso de serviços de saúde. Os sintomas se agruparam em um único fator, indicando a existência de uma dimensão de somatização na população geral. / BACKGROUND: Somatoform symptoms are frequent and are associated with mental distress in several settings and in the general population. Many of these interactions are not well understood or not understood at all. OBJECTIVE AND METHODS: Based on bibliographical research, to investigate: a) the history of somatization-related illnesses; b) its many categories according to contemporary psychiatric and non-psychiatric concepts (somatoform disorders, dissociative-conversive disorders, chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome etc.); c) associated factors and etiological hypothesis for these phenomena. Using data available from the University of São Paulo Institute of Psychiatry Epidemiologic Catchment Area Study (Andrade et al., 1994) - a cross-sectional survey of physical and psychiatric morbidity which interviewed a representative sample of São Paulo city boroughs of Vila Madalena and Jardim América - to explore the prevalence and classification of reported physical symptoms in general, and specifically those which are medically unexplained (MU). To appraise, using logistic regression, the following associations: a) somatoform syndromes and demographic variables; b) somatoform syndromes and use of medication and health services; c) MU symptom and any type (AT) of symptom with demographic variables; and d) MU and AT physical symptoms with mental disorders. To probe, through latent class analysis of yes or no answers for 36 MU physical symptoms: grouping of subjects in classes (cluster analysis); and b) grouping of symptoms in dimensions (factor analysis). One-thousand, four-hundred and sixty-four interviews were performed using the Composite International Diagnostic Interview (CIDI), structured diagnostic interview for mental disorders, including somatoform and dissociative disorders; and a form of demographic variables, chronic physical diseases, use of medical and psychological services and medication intake. RESULTS: No association between somatoform syndromes and demographic variables. Association between somatoform syndromes and increased use of services and medication intake. Association between demographic variables and certain MU/AT symptoms. Physical symptoms AT/MU are associated with mental disorders, in general. Some physical symptoms (fainting, dyspnea, chest pain, arm or leg pain, tingling, heavy menses, muscle weakness, lump in throat, polyuria, palpitations and dizziness) are associated with many of the studied mental disorders. Subjects were clustered into two classes, with low and high symptom scoring; the high scoring class was associated with physical diseases, mental disorders, use of health services and medication intake. Symptoms were grouped into one single factor, pointing to the existence of a somatization dimension in the general population.

Made available in DSpace on 2016-05-02T13:54:44Z (GMT). No. of bitstreams: 1 Dissertacao completa Mauricio Giubilei.pdf: 155857 bytes, checksum: eec715b4a732d4c696eef25d77658ae6 (MD5) Previous issue date: 2006-09-11 / Coordenacao de Aperfeicoamento de Pessoal de Nïvel Superior / Aims The authors tried to identify de-hospitalized mentally ill patients living in shelters or homes and then quantify and stratify them as to their destinations residence and behavior specially towards other residents in Elderly Homes The de-hospitalizations took place by the end of the 80s with changes to the Mental Health policy the creation of Paulo Delgado law and the consequent deactivation of psychiatric beds in Brazil mainly in Minas Gerais state Methods Two questionnaires were made one for the Elderly Homes and the other for their residents The survey only began after a Term of Consent was signed authorizing the participation in this study The first questionnaire consisted of questions regarding care homes themselves their managers main religion budget source number of employees and their specific duties Main types of covenants public or private endowments for specific and complementary assistance as well as the number of beds for elderly and mentally ill residents were also evaluated The Ministry of Health regulations regarding mentally ill patients were unknown to their managers As to the boards of directors they found it acceptable to have both mentally ill and elderly persons in the same environment However they were careful to explain the discomfort of this sociability Psychiatric support or specific hospitals were acknowledged The questionnaire consisted of residents data sociofamiliar factors psychiatric and psychological diagnostics medication and dosages Those residents coming from hospitals number of specialized psychiatric confinements and their behavior adjustments were also considered 520 residents in 11 homes located in 10 cities in the southwest region of Minas Gerais were evaluated Results Gender distribution was the same Average age was 22 to 100 years old (65,60 ± 14,39) Ages between 51 and 70 years old corresponded to 48,65% while in 82.49% of residents the ages were between 51 and 90 years Caucasian was 70.60% Regarding the laboring capacity 67.90% was between none and little Of all residents evaluated 72.90% had never had a psychiatric hospitalization and 10.40% had been hospitalized more than five times The results show that 20.00% of all residents suffer from dementia 19.80% were chronic psychotics and 13.30% schizophrenics 21.70% were mentally ills and 12.70% was the percentage of healthy residents The remaining residents presented other neuropsychiatric diagnostics 3,70% (19) were de-hospitalized from Psychiatric Hospital In general 15.30% had inadequate behaviors which interferes in their daily life and 64.40% make daily use of psychotropic medication against 35.60% who uses with non-psychotropic drugs or only and nothing at all Of the psychotropic medications used haloperidol is the main in 35.20% followed by diazepam 34.00% Biperideno 23.00% followed by Phenobarbital 21.50% and amitriptyline 14.90% Conclusion The study concluded that the number of psychiatric patients de-hospitalized and transferred to Elderly Homes was little in the evaluated area However a significant number of patients with chronic characteristics who alternated between Elderly Homes and Psychiatric Hospitals were identified Most of the Elderly Homes avoided residents with some sort of mental disorder especially schizophrenic ones Other chronic psychiatric patients with light symptoms and lack of monetary and family support were accepted in as a matter of philanthropy and humanity / Objetivo Através das mudanças na Política de Saúde Mental a partir da Lei Paulo Delgado e sua conseqüente diminuição de leitos psiquiátricos os autores buscaram por evidencia quantificar e estratificar doentes mentais de custódia desospitalizados seus destinos e habitações especialmente nas Casas de Acolhimento de Idosos em cidades do sudoeste mineiro Os comportamentos destes pacientes e dos outros condôminos suas capacidades psíquicas e funcionais número de internações psiquiátricas as medicações administradas foram avaliados e estratificados Método Após os diretores dessas casas autorizarem a realização deste estudo dois questionários foram aplicados um a elas e outro aos seus moradores O primeiro identificou uma a uma seus representantes dados econômicos operacionais quantidade de colaboradores e suas funções No segundo cada condômino foi identificado e obteve-se seu diagnóstico social econômico familiar psiquiátrico psicológico e seu tratamento após assinar um Termo de Consentimento Livre e Esclarecido anuindo o nosso exame Todos seus 520 moradores doentes mentais ou não foram avaliados clinicamente e seus diagnósticos estabelecidos segundo a CID-10 Onze dessas casas foram visitadas em dez cidades nessa região definida Resultados A distribuição por sexo foi a mesma e as idades entre 22 a 100 anos Resultou que a predominância foi entre 51 a 70 anos cor de pele branca em 70,60 % e capacidade laborativa inapta em 67,90 % Seis ou mais internações psiquiátricas aconteceram em 10,40% e 20,00% encontravam-se demenciados Psicóticos crônicos e esquizofrênicos respectivamente eram 19,80% e 13,30 % Deficientes mentais encontrados em 21,70% contra 12,70 % de idosos preservados Apenas 3,70% (19) eram egressos de hospitais de custódia No total 15,30 % tinham comportamentos que interferiam no cotidiano dos condôminos Dos que usavam medicamentos regularmente 64,40 % usavam remédios psicotrópicos associados ou não a outros clínicos Destes 35,60% tomavam medicações clínicas ou nenhuma delas Das drogas psiquiátricas prescritas a prevalente foi o haloperidol em 35,20 % seguido do diazepan em 34,00 % o biperideno em 23,00 % fenobarbital em 21,50 % e a amitriptilina em 14,90 % Inexistiram leitos específicos para idosos e doentes mentais Conclusões Este estudo concluiu que o número de egressos de hospitais psiquiátricos de custódia encontrado foi pequeno em relação ao número de doentes mentais moradores dessas casas A capacidade de seus diretores em fazer diagnóstico de perfil de doente mental assim como o faz o psiquiatra inibiu a inclusão de novos condôminos A grande maioria de sua população (87,10%) era portadora de doenças mentais neurológicas neuriátricas entre outras com sintomatologia psiquiátrica Seis ou mais internações psiquiátricas ocorreram em 10,40% inferindo-se que esta alternância entre estas casas e hospitais psiquiátricos foi uma institucionalização contínua em psiquiatria O impacto social apresentou significativo grau de injúria seja ela física ou psíquica demonstrando que essas casas eram inespecíficas e incompletas para que houvesse harmonia entre condôminos de perfis geriátricos e psiquiátricos

Epidemiological trends in mental disorders are shown against a background governed by medical aid health policy. The study quantitatively analyzed a dataset of mental disorders for South Africa’s leading medical aid scheme. South Africa’s leading medical aid scheme has been in operation for almost three decades. This degree of longevity allows for a reliable longitudinal analysis of diagnostic trends. Through consent of the Scheme, a database was provided, which lists mental disorder diagnoses over seven years from 2008 to mid-way through 2015. Data from this source were analyzed and interpreted. Data fields provided and made use of from the raw medical scheme database are: Date of admission (Year, Month); Patient gender; Database population per year; Patient diagnosis (DEG Description); Total per DEG Description. Each diagnosis (mental disorder) is presented in the following ways: 1. Bar charts showing the volume of specific mental illnesses each year. 2. Bar charts showing fluctuations of occurrence of a specific mental illness over time. 3. Frequency of specific mental illnesses over time, relative to the entire database population. 4. Male:Female ratio per mental disorder. 5. Female Outpatient vs. Inpatient volumes across each mental disorder and across all years (2008 – 2015).v 6. Male Outpatient vs. Inpatient volumes across each mental disorder and across all years (2008 – 2015). 7. Total number of patients per mental disorder across time (2008 – 2015). 8. Frequency polygons showing the fluctuation of a selected mental disorder over time as compared to other selected mental disorders. It is found that there are changes in prevalence rates of mental disorders over time and that these fluctuations are attributed to an economic factor within medical aid scheme cost-driven policy. The effect of cost-driven policy is that members diagnosed with a mental disorder may not be granted provision of adequate treatment because diagnosis is in part, determined by economic structures. Costs for mental illness treatment programmes are curtailed by keeping patient numbers significantly low, by radically over-diagnosing certain mental illnesses treated with comparably cheaper pharmaceuticals or by drastically curbing time spent in a mental health facility. Some members of the medical aid scheme have been deliberately misdiagnosed. Alternatively, those, correctly diagnosed, do not receive the treatment required of such an illness. The scenario then is of thousands of mentally ill people, who are not treated effectively. Members continue to pay fees, paying under the illusion that medical cover ensures effective treatment / Psychology / M.A. Psychology

Contexte. Un nombre important de patients souffrant de troubles mentaux reçoivent des soins ambulatoires insuffisants ou inadéquats, les conduisant à visiter régulièrement les urgences. L’accès aux soins et la continuité du suivi offert à ces patients après une visite aux urgences, régulièrement rapportés comme étant faibles, sont des indicateurs clés de la qualité des soins de santé dans une optique de rétablissement. Il semble donc nécessaire d’évaluer l’accès et la continuité du suivi après une visite aux urgences pour ces patients, d’en cerner les déterminants ainsi que les profils de patients les plus susceptibles d’en bénéficier. De plus, pour renforcer l’amélioration de l’organisation des services en santé mentale à partir des urgences pour ces patients, il serait pertinent de développer des interventions innovantes à la lumière d’une meilleure connaissance des conditions qui en facilitent ou limitent l’implantation et l’efficacité. Objectifs et méthodes. Cette étude a, dans un premier temps, utilisé des données extraites de bases de données administratives de patients ayant visité les urgences au Québec (Canada) en 2014-2015 (visite index) et ayant un trouble mental. Les caractéristiques cliniques et sociodémographiques des patients de 2012-2013 à 2014-2015 ainsi que l’utilisation des services 12 mois avant la visite index ont été étudiées en tant que déterminants pour les patients avec ou sans suivi rapide, et ce, à l’aide d’une régression logistique hiérarchique. Une analyse de classes latentes a également été réalisée pour identifier les profils des patients en fonction du suivi ambulatoire qu’ils ont reçu après leur visite à l’urgence. Des analyses bivariées ont examiné les associations entre les variables sociodémographiques et cliniques, les profils des patients ainsi que le suivi ambulatoire que ceux-ci ont reçu après la visite à l’urgence. Plus spécifiquement, notre premier article portait sur l’identification des caractéristiques cliniques, sociodémographiques et d’utilisation des services des patients associées à l’accès à un suivi rapide (≤ 30 jours) pour les patients ayant visité les urgences et ayant un trouble mental. Dans le deuxième article, il s’agissait d’identifier : les profils des patients ayant un trouble mental incident selon un suivi ambulatoire accessible et continu après une visite aux urgences sur une période de 12 mois (à 30, 90 et 365 jours) ; les variables sociodémographiques et cliniques associées ; et les résultats de santé de ces patients à long terme (24 mois). Par la suite, deux recensions de la littérature ont été menées. Dans le troisième article, une recension narrative des innovations organisationnelles destinées à améliorer la qualité des soins offerts aux patients ayant des troubles de santé mentale et visitant les urgences, en particulier à partir de leurs conditions d’implantation, a été menée. Enfin, pour le quatrième article, nous avons réalisé une recension systématique sur l’efficacité des innovations aux urgences étant destinées à améliorer la qualité des soins offerts aux grands utilisateurs en santé mentale. Résultats. Moins d’un tiers des patients ayant des troubles mentaux ont expérimenté un accès et une continuité de suivi adéquats après leur visite aux urgences. Globalement, ce sont les patients peu connus du système de santé, ceux avec des troubles liés à l’usage de substances qui connaissent une faible priorité au triage lors de la visite aux urgences, mais aussi les patients plus jeunes, résidant en milieux ruraux et les hommes qui ont été identifiés comme ayant bénéficié d’un accès et d’une continuité du suivi moindres après leur visite aux urgences. L’accès et la continuité du suivi restent donc à être grandement améliorés pour les patients ayant des TM, une population aux besoins importants qui fréquente régulièrement les urgences du Québec. Conclusions. Malgré de nombreuses réformes, trop peu d’efforts semblent avoir été investis dans les services en santé mentale en regard des besoins des patients et du fait que les urgences restent une porte d’entrée aux soins peu adaptée et très coûteuse pour les patients ayant des TM. De plus, l’organisation actuelle du système répond mieux aux patients déjà desservis par le système, ce qui démontre une capacité réactive ; en revanche, peu d’activités ou d’interventions proactives ont été relevées malgré l’importance du dépistage et de l’intervention précoce. Ce constat est en cohérence avec les dernières priorités ministérielles (PQPTM, 2020 et PAISM, 2022) qui visent à renforcer la prévention-promotion ainsi que certaines interventions, notamment à l’urgence, comme celles liées aux plans de soins et à la gestion de cas. Néanmoins, il sera important de considérer les nombreux défis limitant l’implantation de ces innovations, sans quoi leur efficacité pourrait être limitée. / Context. Some patients with mental disorders receive insufficient or inadequate outpatient care, leading to frequent visits to emergencies. Access to and continuity of follow-up care for these patients after an emergency department visit, regularly reported as poor, is a key indicator of the quality of care they received and ultimately their recovery. It therefore seems necessary to evaluate access and continuity of follow-up care after an emergency department visit for these patients, and to better identify determinants of these quality-of-care indicators and patient profiles most likely to benefit from better care. In addition, to improve the organization of mental health services for these patients in the emergency departments, it would be relevant to develop innovative interventions with a better understanding of the conditions that facilitate or limit their implementation and effectiveness. Objectives and methods. This study initially used data extracted from administrative databases of patients who visited emergency departments in Quebec (Canada) in 2014-2015 (index visit) and had a mental health disorder. Clinical and sociodemographic characteristics of patients from 2012-2013 to 2014-2015, as well as service utilization 12 months before the index visit, were studied as determinants for patients with and without prompt follow-up care, using hierarchical logistic regression. Latent class analysis was also performed to identify patient profiles based on an outpatient follow-up received after their ED visit. Bivariate analyses examined associations between sociodemographic and clinical variables and each of the patient profiles, as well as the ambulatory follow-up received after the ED visit. Specifically, our first article focused on identifying patient characteristics (clinical, sociodemographic, service utilization) associated with access to prompt follow-up care (≤30 days) for patients after they visited the ED for mental health reasons. The second article aimed to identify profiles of patients with incident mental disorder based on accessible and continuous ambulatory follow-up care after an ED visit over a 12-month period (at 30, 90, and 365 days), associated sociodemographic and clinical variables, and long-term (24 months) health outcomes for these patients. Subsequently, two literature reviews were conducted. The third article, based on a narrative review, identified organizational innovations designed to improve quality of care for patients visiting emergency departments for mental health reasons, particularly in terms of their implementation. For the fourth article, a systematic review of the effectiveness of innovations in emergency departments to improve quality of care for high users of mental healthcare was conducted. Results. Less than one third of patients with mental health issues experienced adequate access and continuous follow-up care after their emergency department visit. Overall, patients with little knowledge of the healthcare system, with substance use disorder, experiencing low triage priority at their emergency department visit, but also younger patients, residing in rural areas, and men, were found to experience the least access and continuity of follow-up care after their emergency department visit. Access and continuity of follow-up care therefore remain to be improved for patients with MD, a high-need population that regularly visits Quebec emergency departments. Conclusions. Despite numerous reforms, insufficient effort seems to have been invested in mental health services compared to the needs of patients and the fact that emergency departments remain an ill-adapted and very costly gateway to care for patients with MD. In addition, the current organization of the system is more responsive to patients already served by the system, demonstrating a reactive capacity. In contrast, few proactive activities or interventions were identified, despite the importance of early detected and deployed interventions in this area. These findings are consistent with the latest Quebec policy orientations (PQPTM, 2020 and PAISM, 2022), which aimed to strengthen prevention and deploy new interventions including in the ED, such as those related to care plans and case management. Nevertheless, it will be important to consider the many persistent implementation challenges, that may limit efficiency of those innovations.