Association between diabetes mellitus and depressive symptoms in the Brazilian population

ABSTRACT OBJECTIVE To determine the prevalence of current depressive symptoms in people with diabetes mellitus and their association with the disease. METHODS Data were collected from the Brazilian National Health Survey (Pesquisa Nacional de Saúde - PNS), a cross-sectional, population-based study conducted in 2013. Study participants were selected by simple random cluster sampling in three stages: census tracts, households, and residents aged ≥ 18 years. The presence of diabetes was self-reported, whereas the presence of current depressive symptoms was determined by the Patient Health Questionnaire-9 (PHQ-9) and mean scores of this questionnaire were calculated for the variables assessed. Tobit regression was used to evaluate variation in these individuals. RESULTS Of the 60,202 interviewees, 6.03% (n = 3,636) reported diabetes mellitus. The disease was more frequent in female, older, widowed, obese and with incomplete elementary education. Depression symptoms were mild-to-moderately severe in 22% of the diabetics. The severity of current depressive symptoms was higher in individuals that were female (PHQ-9 mean = 3.35), older adults (PHQ-9 mean = 3.01), indigenous (PHQ-9 mean = 3.46), separated/divorced (PHQ-9 mean = 3.13), widowed (PHQ-9 mean = 3.39), obese (PHQ-9 mean = 3.13) and with incomplete primary education (PHQ-9 mean = 3.21). Higher severity of depressive symptoms was associated with the use of insulin and with coma (PHQ-9 mean = 8.32), limb amputation (PHQ-9 mean = 7.55), circulatory problems (PHQ-9 mean = 6.94), infarction (PHQ-9 mean = 6.83), diabetic foot (PHQ-9 mean = 6.62), and kidney problems (PHQ-9 mean = 6.68). The severity of current depressive symptoms was associated with diabetes severity and degree of limitation in activities of daily living (PHQ-9 mean = 10.62). CONCLUSIONS Interventions to improve depressive symptoms should be prioritized in people with diabetes are female, older adults, indigenous, widowed, separated/divorced, obese and with incomplete elementary education.

Challenges on the epidemiological and economic burden of diabetes and hypertension in Mexico / Retos sobre la carga epidemiológica y económica para diabetes e hipertensión en México

ABSTRACT OBJECTIVE To analyze the epidemiological and economic burden of the health services demand due to diabetes and hypertension in Mexico. METHODS Evaluation study based on a time series study that had as a universe of study the assured and uninsured population that demands health services from the three main institutions of the Health System in Mexico: The Health Department, the Mexican Institute of Social Security, and Institute of Services and Social Security for State Workers. The financing method was based on instrumentation and consensus techniques for medium case management. In order to estimate the epidemiological changes and financial requirements, a time series of observed cases for diabetes and hypertension 1994-2013 was integrated. Probabilistic models were developed based on the Box-Jenkins technique for the period of 2013-2018 with 95% confidence intervals and p < 0.05. RESULTS Comparing results from 2013 versus 2018, in the five regions, different incremental trends of 14%-17% in epidemiological changes and 58%-66% in the economic burden for both diseases were observed. CONCLUSIONS If the risk factors and the different models of care remained as they currently are in the three institutions analyzed, the financial consequences would be of greater impact for the Mexican Institute of Social Security, following in order of importance the Institute of Services and Social Security for State Workers and lastly the Health Department. The financial needs for both diseases will represent approximately 13%-15% of the total budget allocated to the uninsured population and 15%-17% for the population insured depending on the region.

RESUMEN OBJETIVO Analizar la carga epidemiológica y económica de la demanda de servicios de salud por diabetes e hipertensión en México. MÉTODOS Investigación evaluativa basada en un estudio de series de tiempo que tomó como universo de estudio la población asegurada y no asegurada que demanda servicios de salud a las tres principales instituciones del Sistema de Salud en México: Secretaría de Salud, Instituto Mexicano del Seguro Social, e Instituto de Servicios y Seguridad Social para los Trabajadores del Estado. El método de costeo tomó como base las técnicas de instrumentación y de consenso por manejo de caso promedio. Para estimar los cambios epidemiológicos y requerimientos financieros, se integró una serie de tiempos de casos observados para diabetes e hipertensión 1994-2013. Se desarrollaron modelos probabilísticos basados en la técnica de Box-Jenkins para el periodo 2013-2018 con intervalos del 95% de confianza y p < 0.05. RESULTADOS Comparando resultados de 2013 versus 2018, en las cinco regiones, se observaron diferentes tendencias incrementales de 14%-17% en cambios epidemiológicos y de 58%-66% en la carga económica para ambas enfermedades. CONCLUSIONES Si los factores de riesgo y los diferentes modelos de atención permanecieran como están actualmente en las tres instituciones de análisis, las consecuencias financieras serían de mayor impacto para el Instituto Mexicano del Seguro Social, siguiendo en orden de importancia el Instituto de Servicios y Seguridad Social para los Trabajadores del Estado y finalmente para la Secretaría de Salud. Los requerimientos financieros para ambas enfermedades representarán aproximadamente del 13%-15% del presupuesto total asignado para población no asegurada y el 15%-17% para población asegurada dependiendo de la región.

Incidencia de la diabetes mellitus en Cuba, según tipo, en menores de 18 años de edad / Incidence of diabetes mellitus in Cuba in children under 18 years by type

Introducción: la diabetes mellitus tipo 2 en niños y adolescentes está alcanzando proporciones alarmantes. Desde la década de los 90, se asiste a la aparición, cada vez más frecuente, de este fenómeno, el cual parece ser una consecuencia del preocupante aumento de la obesidad en la población, proceso que va acompañado también de insulinorresistencia. Objetivo: describir el comportamiento del incremento de la incidencia de la diabetes mellitus tipo 2 con respecto a la tipo 1, en individuos hasta 18 años de edad, Cuba, 2013-2015. Métodos: se realizó un estudio observacional descriptivo. La población de estudio fue la diagnosticada como diabética de 1 a 18 años, tipo 1 y tipo 2. Los datos estadísticos se tomaron del Registro Nacional de Dispensarización de Diabetes Mellitus correspondiente a los años 2013, 2014 y 2015. Resultados: el comportamiento global de la Razón de Tasas de Incidencia, en los años estudiados, fue fluctuante en la diabetes mellitus tipo 2; mientras que, en la diabetes mellitus tipo 1, se elevó en el periodo 2013-2014 y durante el 2014-2015 existió un notable descenso. La Razón de Tasas de Incidencia (diabetes mellitus tipo 2/diabetes mellitus tipo 1) es mayor que 1, solo en el grupo de edad de 15 a 18 años, correspondientes a los años 2013 y 2014. A medida que incrementa la edad, se eleva esta Razón de Tasas de Incidencia. Conclusiones: la incidencia de diabetes mellitus tipo 2 en los grupos de edades estudiados, se incrementa a medida que incrementa la edad, mientras que la incidencia de la DM 1 disminuye con el incremento de esta(AU)

Introduction: type 2 diabetes mellitus in children and adolescents is reaching alarming proportions. Since the 1990s, we are witnessing the increasingly frequent appearance of this phenomenon, which seems to be a consequence of the worrying increase in obesity in the population, a process that is also accompanied by insulin resistance. Objective: to describe the behavior of the increase in the incidence of type 2 diabetes mellitus with respect to type 1 in individuals up to 18 years old in Cuba from 2013 to 2015. Methods: a descriptive observational study was carried out. The study population was the one diagnosed as diabetic from 1 to 18 years old, type 1 and type 2. The statistical data were taken from the National Registry of Classification of Diabetes Mellitus corresponding to the years 2013, 2014 and 2015. Results: the overall behavior of the Incidence´s Rate Ratio in the years studied was fluctuating in type 2 diabetes mellitus; while in type 1 diabetes mellitus, it increased in the period 2013-2014, and during 2014-2015 there was a notable decrease. The Incidence´s Rate Ratio (diabetes mellitus type 2/diabetes mellitus type 1) is higher than 1 only in the age group of 15 to 18 years, corresponding to the years 2013 and 2014. As the age increases, it raises this Incidence´s Rate Ratio. Conclusions: the incidence of type 2 diabetes mellitus in the age groups studied increases as age increases, while the incidence of type 1 decreases with the increase of age(AU)

Validation of self-reported diabetes in a representative sample of São Paulo city

ABSTRACT OBJECTIVE To validate the self-reported diabetes mellitus in adults and older adults living in the city of São Paulo, Brazil. METHODS We have used data of 569 subjects (284 adults and 285 older adults), participants of the population-based cross-sectional study Inquérito de Saúde do Município de São Paulo (Health Survey of São Paulo). Fasting glucose ≥ 7.0 mmol/L (126 mg/dL) and/or use of drugs (oral hypoglycemic and/or insulin) defined the diagnosis of diabetes mellitus. We have validated the self-reported diabetes mellitus by calculating the sensitivity, specificity, positive predictive values, and negative predictive values. We have used Poisson regression with robust variance to verify the factors associated with the sensitivity of the self-reported datum. For all analyses, we have considered the sample design of the study. RESULTS The sensitivity of self-reported diabetes mellitus was 63.8% (95%CI 49.2–76.3), specificity was 99.7% (95%CI 99.1–99.9), positive predictive value was 95.5% (95%CI 84.4–98.8), and negative predictive value was 96.9% (95%CI 94.9–98.2). The correct reporting of diabetes mellitus was more prevalent among older adults (PR = 2.0; 95%CI 1.2–3.5) than among adults. CONCLUSIONS The use of the datum of self-reported diabetes mellitus is valid, especially among older adults living in the city of São Paulo. The results highlight the need to track diabetes mellitus in asymptomatic subjects who have one or more risk factors for it, mainly in the adult population of this city.

Factors associated with self-reported diabetes according to the 2013 National Health Survey / Fatores associados ao diabetes autorreferido segundo a Pesquisa Nacional de Saúde, 2013

ABSTRACT OBJECTIVES To analyze the factors associated with self-reported diabetes among adult participants of the National Health Survey (PNS). METHODS Cross-sectional study using data of the PNS carried out in 2013, from interviews with adults (≥ 18 years) of 64,348 Brazilian households. The prevalence of self-reported diabetes, assessed by the question “Has a doctor ever told you that you have diabetes?,” was related to sociodemographic characteristics, lifestyle, self-reported chronic disease, and self-evaluation of the health condition. Prevalence ratios were adjusted according to age, sex, and schooling by Poisson regression with robust variance. RESULTS The diagnosis of diabetes was reported by 6.2% of respondents. Its crude prevalence was higher in women (7.0% vs. 5.4%), and among older adults, reaching 19.8% in the elderly. Black adults who received less schooling showed higher prevalence. Among those classified as obese, 11.8% reported having diabetes. Ex-smokers, those insufficiently active and those who consume alcohol abusively reported diabetes more often. Differences were not verified in eating habits among adults who reported, or did not, diabetes. A relation between diabetes and hypertension was found. CONCLUSIONS After adjustment according to age, schooling and sex, diabetes was shown to be associated with higher age, lower schooling, past smoking, overweight and obesity, and hypertension, as well as with a self-declared poor state of health, indicating a pattern of risk factors common to many chronic non-communicable diseases and the association of the disease with morbidity.

RESUMO OBJETIVOS Analisar os fatores associados ao diabetes autorreferido entre adultos entrevistados na Pesquisa Nacional de Saúde (PNS). MÉTODOS Estudo transversal utilizando dados da PNS realizada em 2013, a partir de entrevistas com adultos (≥ 18 anos) de 64.348 domicílios brasileiros. A prevalência de diabetes autorreferido, avaliada pela pergunta “Algum médico já lhe disse que o sr(a) tem diabetes?”, foi relacionada a características sociodemográficas, estilos de vida, doença crônica autorreferida e autoavaliação do estado de saúde. Razões de prevalência foram ajustadas segundo idade, sexo e escolaridade por regressão de Poisson com variância robusta. RESULTADOS O diagnóstico de diabetes foi referido por 6,2% dos entrevistados. Sua prevalência bruta foi maior em mulheres (7,0 vs. 5,4%), e entre adultos de maior idade, chegando a 19,8% dos idosos. Os adultos de cor preta e de menor escolaridade apresentaram prevalências maiores. Entre os classificados como obesos, 11,8% referiram ter diabetes. Ex-fumantes, aqueles insuficientemente ativos e que consomem álcool abusivamente referiram diabetes mais frequentemente. Não foram verificadas diferenças nos hábitos alimentares entre adultos que referiram ou não diabetes. Verificou-se relação entre diabetes e a ocorrência de hipertensão arterial. CONCLUSÕES Após ajustes por idade, escolaridade e sexo, o diabetes mostrou-se associado com maior idade, menor escolaridade, fumo no passado, sobrepeso e obesidade, e hipertensão arterial sistêmica, bem como com estado de saúde auto-declarado como ruim, indicando um padrão de fatores de risco comum a várias doenças crônicas não transmissíveis e associação da doença com morbidade.

Diabetes mellitus and drug abuse during pregnancy and the risk for orofacial clefts and related abnormalities / La diabetes mellitus, el abuso de drogas durante el embarazo y el riesgo de malformaciones craneofaciales y anomalías relacionadas / Diabetes mellitus e uso de drogas durante a gravidez e o risco de fissuras orofaciais e anomalias relacionadas

Abstract Objective: to assessed the prevalence of diabetes mellitus (DM) and drug abuse in mothers of children with orofacial clefts (OFC). Methods: 325 women who had children (0-3y) with clefts were interviewed. Data regarding type of diabetes, use of legal/illegal drugs during pregnancy, waist girth and fasting blood sugar at the first prenatal consult were collected. Results: twenty seven percent of the women had DM, out of these, 89% had gestational DM, 5,5% type 1 DM and 5,5% type 2 DM. The prevalence of DM in mothers of children with OFC was 27%, it is significantly higher than the average Brazilian population which is 7.6% (p<0.01) (OR=4.5, 95%CI=3.5-5.8). Regarding drug abuse during pregnancy, 32% of the mothers used drugs and a significant positive correlation was observed between drug abuse and the occurrence of clefts and other craniofacial anomalies (p=0.028) (OR=2.87; 95%CI=1.1-7.4). Conclusions: DM and drug abuse during pregnancy increases the risk for OFC and related anomalies and early diagnosis of DM and prevention of drug abuse, especially in pregnant women, should be emphasized.

Resumen Objetivos: esta investigación estableció la prevalencia de diabetes mellitus (DM) y el abuso de drogas en madres de niños con malformaciones creaneofaciales (MCF). Métodos: 325 mujeres que tuvieron hijos (0-3 años) con malformaciones fueron entrevistadas. Se obtuvieron datos referentes a: tipo de diabetes; uso de drogas lícitas o ilícitas durante el embarazo; circunferencia de la cintura; y, glucemia en ayunas en la primera consulta prenatal. Resultados: el veintisiete por ciento de las mujeres tenían DM. Entre estas, el 89% tuvieron DM gestacional, el 5,5% DM tipo 1 y el 5,5% DM tipo 2. La prevalencia de DM en madres de hijos con MCF fue de 27%. Esto es significativamente más alto que el promedio de la población brasileña afectada por esa enfermedad, que es de 7,6% (p<0.01) (OR=4,5, 95%IC=3,5-5,8). Observando el abuso de drogas durante el embarazo, el 32% de las madres había utilizado drogas y una correlación positiva significativa fue observada entre el abuso de drogas y la ocurrencia de hendiduras y otras malformaciones craneofaciales (p=0,028) (OR=2,87; 95%IC=1,1-7,4). Conclusiones: la DM y el abuso de drogas durante el embarazo aumentan el riesgo de MCF y de anomalías relacionadas; se enfatiza la importancia del diagnóstico precoz de DM y la prevención del abuso de drogas, especialmente entre las mujeres embarazadas.

Resumo Objetivos: avaliar a prevalência de diabetes mellitus (DM) e o uso de drogas em mães de crianças com fissuras orofaciais (FOF). Método: 325 mulheres que tiveram filhos (0-3 anos) com fissuras foram entrevistadas. Os dados referentes tipo de diabetes, uso de drogas lícitas / ilícitas durante a gravidez, circunferência abdominal e glicemia em jejum na primeira consulta pré-natal foram coletados. Resultados: vinte e sete por cento das mulheres tinham DM. Destes, 89% tinham DM gestacional, 5,5% DM tipo 1 e 5,5% DM tipo 2. A prevalência de DM em mães de crianças com FOF foi de 27%, significativamente mais elevado que a média da população brasileira que é de 7,6% (p <0,01) (OR = 4,5, IC de 95% = 3,5-5,8). Com relação ao uso de drogas, 32% das mães eram usuárias drogas durante a gravidez e uma correlação positiva foi observada entre o uso de drogas e a ocorrência de FOF e anomalias relacionadas (p = 0,028) (OR = 2,87; IC95% = 1,1-7,4). Conclusões: DM e uso de drogas durante a gravidez aumentam o risco de FOF e anomalias relacionadas e o diagnóstico precoce de DM e a prevenção do uso de drogas, especialmente em mulheres grávidas, devem ser enfatizados.

Diabetes burden in Brazil: fraction attributable to overweight, obesity, and excess weight / Carga de diabetes no Brasil: fração atribuível ao sobrepeso, obesidade e excesso de peso

OBJECTIVE To estimate the burden of type 2 diabetes mellitus and its percentage attributable to overweight and obesity in Brazil.METHODS The burden of diabetes mellitus was described in terms of disability-adjusted life years, which is the sum of two components: years of life lost and years lived with disability. To calculate the fraction of diabetes mellitus attributable to overweight, obesity, and excess weight, we used the prevalence of these risk factors according to sex and age groups (> 20 years) obtained from the 2008 Pesquisa Dimensões Sociais das Desigualdades (Social Dimensions of Inequality Survey) and the relative risks derived from the international literature.RESULTS Diabetes mellitus accounted for 5.4% of Brazilian disability-adjusted life years in 2008, with the largest fraction attributed to the morbidity component (years lived with disability). Women exhibited higher values for disability-adjusted life years. In Brazil, 49.2%, 58.3%, and 70.6% of diabetes mellitus in women was attributable to overweight, obesity, and excess weight, respectively. Among men, these percentages were 40.5%, 45.4%, and 60.3%, respectively. Differences were observed with respect to Brazilian regions and age groups.CONCLUSIONS A large fraction of diabetes mellitus was attributable to preventable individual risk factors and, in about six years, the contribution of these factors significant increased, particularly among men. Policies aimed at promoting healthy lifestyle habits, such as a balanced diet and physical activity, can have a significant impact on reducing the burden of diabetes mellitus in Brazil.

OBJETIVO Estimar a carga do diabetes mellitus tipo 2 e sua fração atribuível ao sobrepeso e obesidade no Brasil.MÉTODOS A carga de diabetes mellitus foi descrita por meio dos anos de vida perdidos ajustados por incapacidade, a partir da soma de dois componentes: anos de vida perdidos por morte prematura e anos de vida perdidos devido à incapacidade. Para o cálculo da fração do diabetes mellitus devida ao sobrepeso, à obesidade e ao excesso de peso, foram utilizadas as prevalências desses fatores de risco por sexo e faixa etária (> 20 anos), obtidas na Pesquisa Dimensões Sociais das Desigualdades, do ano de 2008, e os riscos relativos obtidos na literatura internacional.RESULTADOS Diabetes mellitus respondeu por 5,4% dos anos de vida perdidos ajustados por incapacidade em 2008, sendo a maior parcela atribuída ao componente de morbidade (anos de vida perdidos devido à incapacidade). As mulheres apresentaram maiores valores de anos de vida ajustados para incapacidade. No Brasil, 49,2%, 58,3% e 70,6% do diabetes mellitus no sexo feminino foram atribuíveis ao sobrepeso, à obesidade e ao excesso de peso, respectivamente. Entre os homens, esses percentuais foram 40,5%, 45,4% e 60,3%, respectivamente. Diferenças foram observadas no que tange às grandes regiões brasileiras e às faixas etárias.CONCLUSÕES Grande parte da carga do diabetes foi atribuível a fatores de risco modificáveis e, em aproximadamente seis anos, a contribuição desses fatores aumentou expressivamente, sobretudo entre os homens. Políticas voltadas à promoção de hábitos saudáveis de vida, como alimentação balanceada e prática de atividade física, podem ter um impacto significativo na redução da carga de diabetes mellitus no Brasil.

Self-reported diabetes in older people: comparison of prevalences and control measures / Diabetes autorreferido em idosos: comparação das prevalências e medidas de controle

OBJECTIVE The objective of this study was to analyze the prevalence of diabetes in older people and the adopted control measures. METHODS Data regarding older diabetic individuals who participated in the Health Surveys conducted in the Municipality of Sao Paulo, SP, ISA-Capital, in 2003 and 2008, which were cross-sectional studies, were analyzed. Prevalences and confidence intervals were compared between 2003 and 2008, according to sociodemographic variables. The combination of the databases was performed when the confidence intervals overlapped. The Chi-square (level of significance of 5%) and the Pearson’s Chi-square (Rao-Scott) tests were performed. The variables without overlap between the confidence intervals were not tested. RESULTS The age of the older adults was 60-69 years. The majority were women, Caucasian, with an income of between > 0.5 and 2.5 times the minimum salary and low levels of schooling. The prevalence of diabetes was 17.6% (95%CI 14.9;20.6) in 2003 and 20.1% (95%CI 17.3;23.1) in 2008, which indicates a growth over this period (p at the limit of significance). The most prevalent measure adopted by the older adults to control diabetes was hypoglycemic agents, followed by diet. Physical activity was not frequent, despite the significant differences observed between 2003 and 2008 results. The use of public health services to control diabetes was significantly higher in older individuals with lower income and lower levels of education. CONCLUSIONS Diabetes is a complex and challenging disease for patients and the health systems. Measures that encourage health promotion practices are necessary because they presented a smaller proportion than the use of hypoglycemic agents. Public health policies should be implemented, and aimed mainly at older individuals with low income and schooling levels. These changes are essential to improve the health condition of older diabetic patients. .

OBJETIVO O objetivo deste trabalho foi analisar a prevalência de diabetes em idosos e as medidas de controle adotadas. MÉTODOS Foram analisados dados de idosos diabéticos participantes dos Inquéritos de Saúde no Município de São Paulo, SP, ISA-Capital, 2003 e 2008, estudos de base transversal. Compararam-se as prevalências e seus intervalos de confiança entre os dois anos de estudo, segundo variáveis sociodemográficas. Realizou-se a junção dos bancos de dados quando ocorreu sobreposição dos intervalos de confiança. Realizou-se teste Qui-quadrado com nível de significância de 5% e o Qui-quadrado de Pearson (Rao-Scott). Variáveis sem sobreposições entre os intervalos de confiança não foram testadas. RESULTADOS Os idosos tinham predominantemente de 60 a 69 anos, eram do sexo feminino, de cor branca, com renda > 0,5 até 2,5 salários mínimos e baixa escolaridade. A prevalência de diabetes foi de 17,6% (IC95% 14,9;20,6) em 2003 e 20,1% (IC95% 17,3;23,1) em 2008, sugerindo crescimento no período (p no limite da significância). O uso de hipoglicemiantes apresentou maiores prevalências, seguido por dieta alimentar, entre os meios adotados para controlar o diabetes. Houve baixa frequência das práticas de atividade física, apesar da diferença significativa encontrada no período. Ocorreram diferenças significativas relacionadas ao acesso e ao uso de serviço público de saúde para controle do diabetes, maior em idosos com menor renda e menor escolaridade nos dois anos analisados. CONCLUSÕES O diabetes é uma doença complexa e desafiadora para o portador e para os sistemas de saúde. São necessárias iniciativas que encorajem práticas de promoção de saúde, uma vez que estas apresentaram percentuais ...

Estrategias de identificacao, investigacao e classificacao de desfechos incidentes no ELSA-Brasil / ELSA-Brasil strategies for outcome identification, investigation and ascertainment

OBJETIVO: O artigo descreve as estratégias do Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil) para a manutenção da adesão dos participantes ao longo do tempo e seu seguimento adequado. Isto é fundamental para garantir a validade interna de estudos longitudinais e identificar, investigar e classificar os desfechos incidentes de interesse. MÉTODOS: A metodologia de seguimento da coorte combina contatos telefônicos anuais com re-exames e entrevistas a cada três ou quatro anos. O objetivo é identificar desfechos incidentes de natureza transitória, reversíveis ou não; desfechos finais, de natureza irreversível; bem como complicações relacionadas à evolução das doenças cardiovasculares e diabetes, principais doenças estudadas. RESULTADOS: As entrevistas telefônicas visam monitorar a saúde dos participantes e identificar possíveis eventos ocorridos, como internações hospitalares, exames ou procedimentos especializados definidos previamente. O participante também é incentivado a comunicar a ocorrência de algum evento de saúde ao Centro de Pesquisa. A partir da identificação de um potencial evento, é iniciado um processo de investigação, que inclui acesso a prontuários médicos para verificação de datas e informações detalhadas sobre aquele evento. Os documentos obtidos são analisados sem identificação do paciente, profissional ou serviço de saúde e classificados por um comitê de especialistas médicos. A classificação de desfechos incidentes adotada baseia-se em critérios internacionais consagrados, garantindo comparabilidade e reduzindo o erro de classificação deles. Além dessas estratégias, a ocorrência de desfechos ...

OBJECTIVE: The article describes the strategies adopted by the Brazilian Longitudinal Study for Adult Health (ELSA-Brasil) for participation and retention of subjects. This is key to ensure internal validity of longitudinal studies, and to identify, investigate, and ascertain outcomes of interest. METHODS: The follow-up strategies include annual telephone contacts with new assessments and interviews every three to four years this approach aims to identify transient outcomes (reversible or not), permanent outcomes as well as complications related to the progression of major diseases - cardiovascular diseases and diabetes - to be studied. RESULTS: Telephone interviews are designed to monitor subjects' health status and to identify potential health-related events such as hospital admissions, medical visits or pre-selected medical procedures. Subjects are also encouraged to report to the ELSA-Brasil team any new health-related events. When a potential event is identified, a thorough investigation is carried out to collect relevant information about that event from medical records. All data are blinded and reviewed and analyzed by a medical expert committee. Incident outcome ascertainment follows well-established international criteria to ensure data comparability and avoid misclassification. In addition to these strategies, the occurrence of health-related events is also investigated through linkage of secondary databases, such as national mortality and hospital admission databases. CONCLUSIONS: Accurate identification of outcomes will allow to estimating their incidence in the study cohort and to investigate the effect of the exposures studied in the ELSA-Brasil at baseline and at its subsequent waves. .