Clinicopathological features, genetic alterations, and BRCA1 promoter methylation in Japanese male patients with breast cancer.

PURPOSE: Male breast cancer (MBC) is a rare cancer accounting for only 1% of all male cancers and is, therefore, poorly studied. We aimed to characterize the subtypes of MBC in Japanese patients based on genetic profiling, the presence of tumor-infiltrating cells, and the expression of immunohistochemical markers. METHODS: This retrospective study included 103 patients with MBC diagnosed between January 2009 and December 2019 at various hospitals in Japan. Clinicopathological patient characteristics were obtained from medical records, and formalin-fixed paraffin-embedded tissue specimens were analyzed for histological markers, mutations of 126 genes, BRCA1 methylation, and stromal tumor-infiltrating lymphocytes. RESULTS: The median patient age was 71 (range 31-92) years. T1-stage tumors were the most frequent (47.6%), and most were node negative (77.7%). The majority of tumors were positive for estrogen receptor (98.1%), progesterone receptor (95.1%), and androgen receptor (96.1%), and BRCA2 was the most frequently mutated gene (12.6%). The most common treatment was surgery (99.0%), either total mastectomy (91.1%) or partial mastectomy (7.0%). Survival analysis showed a 5-year recurrence-free survival rate of 64.4% (95% confidence interval [CI] 46.7-88.8) and a 5-year overall survival rate of 54.3% (95% CI 24.1-100.0). CONCLUSION: Japanese MBC is characterized by a high rate of hormonal receptor positivity and BRCA2 somatic mutation. Due to the observed clinicopathological differences in MBC between the Western countries and Japan, further prospective studies are needed to evaluate the most suitable treatment strategies.

Anthropometric indicators in traditional peoples and communities in Brazil: analysis of individual records from the Food and Nutrition Surveillance System, 2019 / Indicadores antropométricos en pueblos y comunidades tradicionales en Brasil: análisis de registros individuales del Sistema de Vigilancia Alimentaria y Nutricional, 2019 / Indicadores antropométricos em povos e comunidades tradicionais do Brasil: análise de registros individuais do Sistema de Vigilância Alimentar e Nutricional, 2019

Abstract Objective: To describe the prevalence of underweight and obesity indicators among individuals registered as traditional peoples and communities in the Food and Nutrition Surveillance System, across Brazil, in 2019. Methods: This was a descriptive study using individual secondary data from participants receiving care in the Primary Health Care within the Brazilian National Health System. Results: In the study population (N = 13,944), there was a higher prevalence of short stature among male children and adolescents (14.2%), when compared to their female counterparts (11.8%); in the adult female population, there was a higher prevalence of obesity (23.0%), when compared to the male population (11.3%); the prevalence of low height-for-age in riverine communities (18.5%) and obesity in the adult faxinalense population (75.1%) stood out. Conclusion: Anthropometric disparities between different communities require tailored responses, emphasizing targeted primary health care and programs to ensure food and nutrition security.

Resumen Objetivo: Describir la prevalencia de indicadores de bajo peso y obesidad entre individuos registrados como pueblos y comunidades tradicionales en el Sistema de Vigilancia Alimentaria y Nutricional, en todo Brasil, en 2019. Métodos: Estudio descriptivo, con datos secundarios individuales de participantes atendidos en atención primaria de Salud del Sistema Único de Salud. Resultados: En la población estudiada (N = 13.944), hubo mayor prevalencia de talla baja en niños y adolescentes en el sexo masculino (14,2%), cuando se compara con el femenino (11,8%); en la población adulta femenina hubo mayor prevalencia de obesidad (23,0%), en comparación con la masculina (11,3%); se destacó la prevalencia de baja talla para la edad en comunidades ribereñas (18,5%), y obesidad en la población adulta faxinalense (75,1%). Conclusiones: Las heterogeneidades antropométricas entre comunidades requieren respuestas adaptadas, con énfasis en la atención primaria de salud y en garantizar la seguridad alimentaria y nutricional.

Resumo Objetivo: Descrever a prevalência de indicadores de baixo peso e de obesidade entre os indivíduos registrados como povos e comunidades tradicionais no Sistema de Vigilância Alimentar e Nutricional, de todo o Brasil, em 2019. Métodos: Estudo descritivo, com dados individualizados secundários de participantes atendidos na Atenção Básica do Sistema Único de Saúde. Resultados: Na população estudada (N = 13.944), houve maior prevalência de altura baixa entre crianças e adolescentes do sexo masculino (14,2%), quando comparados aos do sexo feminino (11,8%); na população adulta do sexo feminino, observou-se maior prevalência de obesidade (23,0%), quando comparada à do sexo masculino (11,3%); destacou-se a prevalência de altura baixa para a idade nas comunidades ribeirinhas (18,5%), e de obesidade na população adulta faxinalense (75,1%). Conclusões: As heterogeneidades antropométricas entre as comunidades exigem respostas adaptadas, com ênfase na atenção primária à saúde e na garantia da segurança alimentar e nutricional.

Chickenpox outbreak among Venezuelan immigrants housed in shelters and occupations in the state of Roraima, Brazil, 2019: a descriptive study / Brote de varicela entre inmigrantes venezolanos alojados en albergues y ocupaciones en el estado de Roraima, Brasil, 2019: estudio descriptivo / Surto de varicela entre imigrantes venezuelanos alojados em abrigos e ocupações no estado de Roraima, 2019: um estudo descritivo

Objective: To describe the chickenpox outbreak among Venezuelan immigrants in shelters and occupations in the municipalities of Pacaraima and Boa Vista, Roraima, Brazil, and the control measures implemented. Methods: Descriptive case series study, that happened between november 21 and december 13, 2019, using secondary database from the investigation of the outbreak, made available by the General Coordination of the National Immunization Program. Descriptive analysis was performed, using simple and relative frequency measures, and calculating measures of central tendency and dispersion. Results: Of the 9,591 immigrants, 38 active cases and 1,500 susceptible to chickenpox were detected. Among the active cases, 23 were female and the most affected age group those under 9 years old (17 cases). Conclusion: The identification of susceptible people in the investigation led to the adoption of immunization actions that controlled the transmission, preventing serious cases, deaths, and the overload of the local health care network.

Objetivo: Descrever o surto de varicela entre imigrantes venezuelanos em abrigos e ocupações nos municípios de Pacaraima e Boa Vista, Roraima, Brasil, e as medidas de controle implementadas. Métodos: Estudo descritivo de tipo 'série de casos', realizado entre 21 de novembro e 13 de dezembro de 2019, sobre banco de dados secundários da investigação do surto disponibilizado pela Coordenação-Geral do Programa Nacional de Imunizações. Na análise descritiva, utilizou-se medidas de frequência simples e relativa e foram calculadas medidas de tendência central e dispersão. Resultados: Dos 9.591 imigrantes, detectaram-se 38 casos ativos e 1.500 suscetíveis à varicela. Dos casos ativos, 23 eram do sexo feminino e a faixa etária mais acometida foi a de menores de 9 anos (17 casos). Conclusão: Identificou-se pessoas suscetíveis à varicela na investigação; foram adotadas ações de imunização que controlaram a transmissão, evitando casos graves, óbitos e sobrecarga da rede de assistência à saúde local.

Trends in Vitamin C Consumption in the United States: 1999-2018.

Low intakes of fruits and vegetables have resulted in suboptimal intakes of several micronutrients, including vitamin C. This cross-sectional study used data from 84,902 children/adults (≥1 y) who completed a 24-h dietary recall as part of the United States National Health and Nutrition Examination Survey (1999-2018). Mean vitamin C intakes from foods/beverages were calculated as were trends in major food/beverage sources of vitamin C. Percentages below the Estimated Average Requirement (EAR) were estimated. Overall, mean vitamin C consumption declined by 23% (97-75 mg/d; p-value for trend < 0.001). 100% fruit juice was the leading source of vitamin C (25.6% of total or 21.7mg/d), but this declined by 48% (25-13 mg/d; p-value for trend < 0.001). Whole fruit increased among children/adolescents (+75.8%;10-17 mg/d; p-value for trend < 0.001), but not adults, while the vegetable contribution was generally unchanged. The proportion of the population below the EAR increased by 23.8% on a relative scale or 9 percentage points on an absolute scale (38.3-47.4%). Declines in vitamin C intake is driven largely by decreases in fruit juice coupled with modest increases in whole fruit. Due to associations between vitamin C intake and numerous health outcomes these trends warrant careful monitoring moving forward.

Classification proposal of the different types of descriptive epidemiological studies / Propuesta de clasificación de los diferentes tipos de estudios epidemiológicos descriptivos / Proposta de classificação dos diferentes tipos de estudos epidemiológicos descritivos

Descriptive epidemiological studies are relevant for public health care services.  Nevertheless, their nomenclature and classification are faulty.  We reviewed textbooks on epidemiology available for a careful review of chapters on descriptive epidemiology and study designs, 19 from foreign literature and 6 from Brazil.  In 11 books, authors do not even take the category of descriptive studies into consideration and only include analytic designs.  Twelve foreign textbooks and two from Brazil include specific descriptive studies although not always mentioning a category with this name.  We propose a classification based on the research question to which they are responding; it includes three studies to be conducted on clinical settings: case report, case series, clinical cohort; and four at population / community level: study of prevalence, study of incidence (cohort), descriptive-ecological and study of intervention before- and-after.  We discuss potential uses, implementation of novel data analysis methods and their importance on surveillance.   

A categoria dos estudos epidemiológicos descritivos é tema relevante, uma vez que existem inconsistências na literatura quanto a sua nomenclatura e classificação. Foram revistos livros de textos acadêmicos de epidemiologia, 19 estrangeiros e seis nacionais, sendo o critério principal tê-los disponíveis para revisão detalhada dos capítulos de epidemiologia descritiva e tipos de estudo. Em 11 livros, os autores dão prioridade aos estudos analíticos. Doze textos estrangeiros e dois brasileiros incluem estudos descritivos, apesar de a maioria não explicitar uma categoria específica com esse nome. Propõe-se uma classificação com base nas respostas a questões norteadoras de pesquisa, incluindo os seguintes tipos de estudos: relato de caso, série de casos, coorte clínica, estudo de prevalência, estudo de incidência (coorte) e estudo ecológico descritivo.  Discutem-se as potencialidades do seu uso, a implementação de novos métodos de análise e sua relevância na vigilância à saúde. 

Proposta de classificação dos diferentes tipos de estudos epidemiológicos descritivos / Propuesta de clasificación de los diferentes tipos de estudios epidemiológicos descriptivos / Proposal for classifying the different types of descriptive epidemiological studies

A categoria dos estudos epidemiológicos descritivos é tema relevante, uma vez que existem inconsistências na literatura quanto a sua nomenclatura e classificação. Foram revistos livros de textos acadêmicos de epidemiologia, 19 estrangeiros e seis nacionais, sendo o critério principal tê-los disponíveis para revisão detalhada dos capítulos de epidemiologia descritiva e tipos de estudo. Em 11 livros, os autores dão prioridade aos estudos analíticos. Doze textos estrangeiros e dois brasileiros incluem estudos descritivos, apesar de a maioria não explicitar uma categoria específica com esse nome. Propõe-se uma classificação com base nas respostas a questões norteadoras de pesquisa, incluindo os seguintes tipos de estudos: relato de caso, série de casos, coorte clínica, estudo de prevalência, estudo de incidência (coorte) e estudo ecológico descritivo. Discutem-se as potencialidades do seu uso, a implementação de novos métodos de análise e sua relevância na vigilância à saúde.

La categoría de estudios epidemiológicos descriptivos es relevante para los servicios de atención de salud ya que existen inconsistencias en la literatura con relación a su nomenclatura y clasificación. Se revisaron libros de texto académicos de epidemiología con ejemplares disponibles para revisión detallada de capítulos de epidemiología descriptiva y tipos de estudio: 19 extranjeros y 6 brasileños. En 11 libros, los autores no consideran ningún estudio que no sea analítico. Doce textos extranjeros y dos brasileños abarcan estudios descriptivos, aunque la mayoría no reconozca esa categoría explícitamente. Se propone una clasificación basada en las respuestas a preguntas orientadoras de la investigación incluyendo los siguientes tipos de estudios: relato de caso, serie de casos y cohorte clínica; cuatro de ámbito poblacional/comunitario: estudio de prevalencia, estudio de incidencia (cohorte), estudio descriptivo ecológico. Se discuten las potencialidades del uso, la implementación de nuevos métodos de análisis y su relevancia en la vigilancia epidemiológica.

Descriptive epidemiological studies are of relevance, given that there are inconsistencies in the literature with regard to their nomenclature and classification. We reviewed 19 international and six national academic textbooks on epidemiology, where the main criterion was to have them available in order to undertake an in-depth review of chapters on descriptive epidemiology and study types. In 11 books, the authors prioritize analytical studies. Twelve foreign texts and two from Brazil include descriptive studies, although the majority did not specifically refer to a category with this name. We propose a classification based on the answers to research questions, including the following types of study: case report, case series, clinical cohort, prevalence study, incidence study (cohort) and descriptive ecological study. We discuss potential uses, implementation of novel data analysis methods and their relevance in health surveillance.

Surto de varicela entre imigrantes venezuelanos alojados em abrigos e ocupações no estado de Roraima, 2019: um estudo descritivo / Brote de varicela entre inmigrantes venezolanos alojados en albergues y ocupaciones en el estado de Roraima, Brasil, 2019: estudio descriptivo / Chickenpox outbreak among Venezuelan immigrants housed in shelters and occupancies in the state of Roraima, Brazil, 2019: a descriptive study

Objetivo: Descrever o surto de varicela entre imigrantes venezuelanos em abrigos e ocupações nos municípios de Pacaraima e Boa Vista, Roraima, Brasil, e as medidas de controle implementadas. Métodos: Estudo descritivo do tipo 'série de casos', realizado entre 21 de novembro e 13 de dezembro de 2019, sobre banco de dados secundários da investigação do surto disponibilizado pela Coordenação-Geral do Programa Nacional de Imunizações. Na análise descritiva, utilizaram-se medidas de frequência simples e relativa e foram calculadas medidas de tendência central e dispersão. Resultados: Dos 9.591 imigrantes, detectaram-se 38 casos ativos e 1.459 suscetíveis à varicela. Dos casos ativos, 23 eram do sexo feminino e a faixa etária mais acometida foi a de menores de 9 anos (17 casos). Conclusão: Identificaram-se pessoas suscetíveis a varicela na investigação; foram adotadas ações de imunização que controlaram a transmissão, evitando casos graves, óbitos e sobrecarga da rede de assistência à saúde local.

Objetivo: Describir el brote de varicela entre inmigrantes venezolanos en albergues y ocupaciones en los municipios de Pacaraima y Boa Vista, Roraima, Brasil, y las medidas de control implementadas. Métodos: Estudio descriptivo del tipo "serie de casos", entre el 21 de noviembre y 13 de diciembre de 2019, utilizando datos secundarios de la investigación del brote, puesto a disposición por la Coordinación General del Programa Nacional de Inmunizaciones. En el análisis descriptivo, se utilizaron medidas de frecuencia simple y relativa y se calcularon medidas de tendencia central y dispersión. Resultados: Entre los 9.591 inmigrantes se detectaron 38 casos activos y 1.500 susceptibles a la varicela. Entre los casos activos, 23 fueron mujeres y el grupo de edad más afectado fue de menores de 9 años (17 casos). Conclusión: Se identificaron personas susceptibles a la varicela, lo que llevó a adopción de acciones de inmunización que controlaran la transmisión, previniendo casos graves, muertes y sobrecarga de la red local de atención.

Objective: To describe chickenpox outbreak among Venezuelan immigrants in shelters and occupancies in the municipalities of Pacaraima and Boa Vista, the state capital of Roraima, Brazil, and the control measures implemented. Methods: This was a descriptive case series study, conducted between November 21 and December 13, 2019, based on secondary database obtained from the outbreak investigation made available by the General Coordination for the National Immunization Program. Descriptive analysis was performed using simple and relative frequency measurements, and measures of central tendency and dispersion were calculated. Results: Of the 9,591 immigrants, 38 active cases and 1,459 susceptible to varicella were identified. With regard to active cases, 23 were female, and those aged under 9 years (17 cases) were the most affected. Conclusion: People susceptible to chickenpox were identified during the investigation. Immunization actions aimed at reducing transmission were adopted, thus preventing severe cases, deaths and overload in local health care system.

Time Trends of the Outcomes and Treatment Options for Disseminated Intravascular Coagulation: A Nationwide Observational Study in Japan.

INTRODUCTION: Existing evidence on the mortality time trends of patients with disseminated intravascular coagulation (DIC) is limited, and whether the mortality trend or quality of care of DIC patients has improved remains unknown. This study aimed to investigate the temporal trend in mortality, patient outcomes, and treatment preferences of several anticoagulants in Japan. METHODS: This retrospective observational study used the Japanese Diagnosis Procedure Combination inpatient database, which contains data from more than 1200 acute-care hospitals in Japan. We identified all adult patients that were diagnosed with DIC from July 2010 to March 2018 and sorted them into one of five predefined underlying conditions: sepsis, solid cancer, leukemia, trauma, or obstetric. The data collected as general outcomes were the 28-day mortality and major bleeding events. We also evaluated anticoagulant use for DIC treatment. RESULTS: A total of 325,327 DIC patients were included in this study. Regarding the baseline characteristics, an increase in median age, worsened comorbid conditions, and higher illness severity were observed over time. The underlying conditions for DIC were largely unchanged. Over the study period, the 28-day mortality for overall DIC patients decreased from 41.8% (95% CI 41.2%-42.3%) to 36.1% (95% CI 35.6%-36.6%), which is a 14% decrease over the 8-year period (P trend < 0.001). The downward trend in mortality was more evident in patients with sepsis and leukemia (15% and 14% decreases, respectively), whereas no clinically meaningful change in mortality occurred in trauma and obstetrics patients. Over time, major bleeding events modestly increased, and the length of hospital stay decreased. The temporal trend in the treatment preferences of anticoagulants for DIC patients clearly changed over time. CONCLUSIONS: The overall 28-day mortality for DIC patients clearly decreased from 2010 to 2017. The downward trend in mortality might have resulted from the advances made in the fundamental treatment of underlying diseases and from the changes in anti-DIC strategies.

The Epidemiologic Toolbox: Identifying, Honing, and Using the Right Tools for the Job.

There has been much debate about the relative emphasis of the field of epidemiology on causal inference. We believe this debate does short shrift to the breadth of the field. Epidemiologists answer myriad questions that are not causal and hypothesize about and investigate causal relationships without estimating causal effects. Descriptive studies face significant and often overlooked inferential and interpretational challenges; we briefly articulate some of them and argue that a more detailed treatment of biases that affect single-sample estimation problems would benefit all types of epidemiologic studies. Lumping all questions about causality creates ambiguity about the utility of different conceptual models and causal frameworks; 2 distinct types of causal questions include 1) hypothesis generation and theorization about causal structures and 2) hypothesis-driven causal effect estimation. The potential outcomes framework and causal graph theory help efficiently and reliably guide epidemiologic studies designed to estimate a causal effect to best leverage prior data, avoid cognitive fallacies, minimize biases, and understand heterogeneity in treatment effects. Appropriate matching of theoretical frameworks to research questions can increase the rigor of epidemiologic research and increase the utility of such research to improve public health.

Characteristics of mortality due to ischemic heart disease in Costa Rica from 1970 to 2014.

Objective: To update some important aspects of the descriptive epidemiology of ischemic heart (EIC) disease in Costa Rica during the period 1970-2014. Methods: EIC death rates were obtained in two periods: from 1930 to 1969 and then, for a more specific analysis, from 1970 to 2014, using moving and five-year averages, based on data from the Instituto Nacional de Estadística and the Centro Centroamericano de Población, to analyze them according to age, sex, geographical location and percentage contribution to the general mortality. Information was also obtained to determine the burden of the disease, in this case through Years of Adjusted Life for Disability, Years of Life Lost and Years of Life lost due to Disability. Results: There was a rise in rates in the general population, with greater momentum in the population from 35 to 74 years, up to the five-year period 1995-1999, after which a decline began that apparently stopped during the five-year period 2010-2014 (both sexes: r = 0.9964, r2 = 0.9928, ß = -2.4950, p 0.04; men: r = 0.9994, r2 = 0.9988, ß = -2.770, p = 0.02; women: r = 0.9896, r2 = 0.9793, ß = -2.4950, p = 0.07). The highest rates occur in the provinces of the center of the country. It predominates during the whole period in the male sex and represents on average 14% of the general mortality. Conclusions: Mortality due to EIC is in a phase of decline but the increase in obesity and overweight in the country threatens to slow down this trend, at least during the last five years.

Objetivo: Actualizar algunos aspectos importantes de la epidemiología descriptiva de la enfermedad isquémica del corazón (EIC) en Costa Rica durante el periodo 1970-2014. Métodos: Se obtuvieron las tasas de mortalidad por EIC en dos periodos. De 1930 al año 1969 y luego, para un análisis más específico, de 1970 al 2014, utilizando promedios móviles y quinquenios, a partir de datos del Instituto Nacional de Estadística y del Centro Centroamericano de Población, para analizarlos en relación con edad, sexo, ubicación geográfica y aporte porcentual a la mortalidad general. También se obtuvo información para determinar la carga de la enfermedad, en este caso mediante años de vida ajustados por discapacidad, años de vida perdidos y años de vida perdidos por discapacidad. Resultados: Se apreció ascenso de las tasas en la población general y con mayor empuje en la población de 35 a 74 años, hasta el quinquenio 1995-1999, a partir del cual se inicia un descenso que aparentemente se detiene durante el quinquenio 2010-2014 (ambos sexos: r = 0.9964, r2= 0.9928, b = ­2.4950, p = 0.04; hombres: r = 0.9994, r2= 0.9988, b = ­2.770, p = 0.02; mujeres: r = 0.9896, r2 = 0.9793, b = ­2.4950, p = 0.07). Las tasas más altas se presentan en las provincias del centro del país. Predomina durante todo el periodo en el sexo masculino y representa en promedio el 14% de la mortalidad general. Conclusión: La mortalidad por EIC está en fase de disminución, pero el aumento de la obesidad y el sobrepeso en el país amenaza con frenar dicha tendencia, al menos durante el último quinquenio.

Characteristics of mortality due to ischemic heart disease in Costa Rica from 1970 to 2014.

Objective: To update some important aspects of the descriptive epidemiology of ischemic heart (EIC) disease in Costa Rica during the period 1970-2014. Methods: EIC death rates were obtained in two periods: from 1930 to 1969 and then, for a more specific analysis, from 1970 to 2014, using moving and five-year averages, based on data from the Instituto Nacional de Estadística and the Centro Centroamericano de Población, to analyze them according to age, sex, geographical location and percentage contribution to the general mortality. Information was also obtained to determine the burden of the disease, in this case through Years of Adjusted Life for Disability, Years of Life Lost and Years of Life lost due to Disability. Results: There was a rise in rates in the general population, with greater momentum in the population from 35 to 74 years, up to the five-year period 1995-1999, after which a decline began that apparently stopped during the five-year period 2010-2014 (both sexes: r = 0.9964, r2 = 0.9928, ß =-2.4950, p 0.04; men: r = 0.9994, r2 = 0.9988, ß = -2.770, p = 0.02; women: r = 0.9896, r2 = 0.9793, ß = -2.4950, p = 0.07). The highest rates occur in the provinces of the center of the country. It predominates during the whole period in the male sex and represents on average 14% of the general mortality. Conclusions: Mortality due to EIC is in a phase of decline but the increase in obesity and overweight in the country threatens to slow down this trend, at least during the last five years.

Objetivo: Actualizar algunos aspectos importantes de la epidemiología descriptiva de la enfermedad isquémica del corazón (EIC) en Costa Rica durante el periodo 1970-2014. Métodos: Se obtuvieron las tasas de mortalidad por EIC en dos periodos. De 1930 al año 1969 y luego, para un análisis más específico, de 1970 al 2014, utilizando promedios móviles y quinquenios, a partir de datos del Instituto Nacional de Estadística y del Centro Centroamericano de Población, para analizarlos en relación con edad, sexo, ubicación geográfica y aporte porcentual a la mortalidad general. También se obtuvo información para determinar la carga de la enfermedad, en este caso mediante años de vida ajustados por discapacidad, años de vida perdidos y años de vida perdidos por discapacidad. Resultados: Se apreció ascenso de las tasas en la población general y con mayor empuje en la población de 35 a 74 años, hasta el quinquenio 1995-1999, a partir del cual se inicia un descenso que aparentemente se detiene durante el quinquenio 2010-2014 (ambos sexos: r = 0.9964, r2 = 0.9928, ß = ­2.4950, p = 0.04; hombres: r = 0.9994, r2 = 0.9988, ß = ­2.770, p = 0.02; mujeres: r = 0.9896, r2 = 0.9793, ß = ­2.4950, p = 0.07). Las tasas más altas se presentan en las provincias del centro del país. Predomina durante todo el periodo en el sexo masculino y representa en promedio el 14% de la mortalidad general. Conclusión: La mortalidad por EIC está en fase de disminución, pero el aumento de la obesidad y el sobrepeso en el país amenaza con frenar dicha tendencia, al menos durante el último quinquenio.

Características de la mortalidad por enfermedad isquémica del corazón en Costa Rica de 1970 al 2014 / Characteristics of mortality due to ischemic heart disease in Costa Rica from 1970 to 2014

Resumen Objetivo: Actualizar algunos aspectos importantes de la epidemiología descriptiva de la enfermedad isquémica del corazón (EIC) en Costa Rica durante el periodo 1970-2014. Métodos: Se obtuvieron las tasas de mortalidad por EIC en dos periodos. De 1930 al año 1969 y luego, para un análisis más específico, de 1970 al 2014, utilizando promedios móviles y quinquenios, a partir de datos del Instituto Nacional de Estadística y del Centro Centroamericano de Población, para analizarlos en relación con edad, sexo, ubicación geográfica y aporte porcentual a la mortalidad general. También se obtuvo información para determinar la carga de la enfermedad, en este caso mediante años de vida ajustados por discapacidad, años de vida perdidos y años de vida perdidos por discapacidad. Resultados: Se apreció ascenso de las tasas en la población general y con mayor empuje en la población de 35 a 74 años, hasta el quinquenio 1995-1999, a partir del cual se inicia un descenso que aparentemente se detiene durante el quinquenio 2010-2014 (ambos sexos: r = 0.9964, r2 = 0.9928, β = —2.4950, p = 0.04; hombres: r = 0.9994, r2 = 0.9988, β = —2.770, p = 0.02; mujeres: r = 0.9896, r2 = 0.9793, β = —2.4950, p = 0.07). Las tasas más altas se presentan en las provincias del centro del país. Predomina durante todo el periodo en el sexo masculino y representa en promedio el 14% de la mortalidad general. Conclusión: La mortalidad por EIC está en fase de disminución, pero el aumento de la obesidad y el sobrepeso en el país amenaza con frenar dicha tendencia, al menos durante el último quinquenio.

Abstract Objective: To update some important aspects of the descriptive epidemiology of ischemic heart (EIC) disease in Costa Rica during the period 1970-2014. Methods: EIC death rates were obtained in two periods: from 1930 to 1969 and then, for a more specific analysis, from 1970 to 2014, using moving and five-year averages, based on data from the Instituto Nacional de Estadística and the Centro Centroamericano de Población, to analyze them according to age, sex, geographical location and percentage contribution to the general mortality. Information was also obtained to determine the burden of the disease, in this case through Years of Adjusted Life for Disability, Years of Life Lost and Years of Life lost due to Disability. Results: There was a rise in rates in the general population, with greater momentum in the population from 35 to 74 years, up to the five-year period 1995-1999, after which a decline began that apparently stopped during the five-year period 2010-2014 (both sexes: r = 0.9964, r2 = 0.9928, β = -2.4950, p 0.04; men: r = 0.9994, r2 = 0.9988, β = -2.770, p = 0.02; women: r = 0.9896, r2 = 0.9793, β = -2.4950, p = 0.07). The highest rates occur in the provinces of the center of the country. It predominates during the whole period in the male sex and represents on average 14% of the general mortality. Conclusions: Mortality due to EIC is in a phase of decline but the increase in obesity and overweight in the country threatens to slow down this trend, at least during the last five years.

Observational Study Design in Veterinary Pathology, Part 1: Study Design.

Observational studies are the basis for much of our knowledge of veterinary pathology and are highly relevant to the daily practice of pathology. However, recommendations for conducting pathology-based observational studies are not readily available. In part 1 of this series, we offer advice on planning and conducting an observational study with examples from the veterinary pathology literature. Investigators should recognize the importance of creativity, insight, and innovation in devising studies that solve problems and fill important gaps in knowledge. Studies should focus on specific and testable hypotheses, questions, or objectives. The methodology is developed to support these goals. We consider the merits and limitations of different types of analytic and descriptive studies, as well as of prospective vs retrospective enrollment. Investigators should define clear inclusion and exclusion criteria and select adequate numbers of study subjects, including careful selection of the most appropriate controls. Studies of causality must consider the temporal relationships between variables and the advantages of measuring incident cases rather than prevalent cases. Investigators must consider unique aspects of studies based on archived laboratory case material and take particular care to consider and mitigate the potential for selection bias and information bias. We close by discussing approaches to adding value and impact to observational studies. Part 2 of the series focuses on methodology and validation of methods.

Checklist for reporting results using observational descriptive studies as research designs: the MInCir initiative / Lista de verificación para reporte de resultados usando estudios observacionales descriptivos como diseños de investigación: la iniciativa Mincir

Observational and descriptive studies (ODS) represent between 70 % and 80 % of the designs utilized in biomedical publications of the different scientific journals. Despite this, there are no tools to guide writers and to assist reviewers in reporting results with this type of research design. The aim of this study was to report the characteristics of a validated checklist for reporting the results using ODS as research designs in an English version. Two-stage study with qualitative methodology. In a first stage, a proposal was designed, by collecting items and domains from an extensive review of the literature. In the second, an instrument was developed by applying reduction items and domains through a panel of 45 experts comprised of clinical academics, reviewers and editors of biomedical journals, and experts in research methodology. These worked determining the validity of facade and content of the instrument. The items and domains incorporated into the final instrument were those in which over 80 % of agreement was achieved between the participants (36 of 45). In this way an instrument was created composed of 19 items, grouped into four domains. Characteristics of the design, construction and validation of a checklist that could help authors, reviewers and journal editors to write and review articles using ODS as research designs to report results was reported.

Los estudios observacionales descriptivos (EOD), representan entre el 70 % y 80 % de los diseños utilizados en las publicaciones biomédicas de las distintas revistas científicas; y, a pesar de ello, no existen instrumentos para guiar a los escritores en el reporte de resultados, como tampoco para colaborar con los revisores con este tipo de diseños de investigación. El objetivo de este estudio fue reportar las características de un sistema de verificación validado, para el reporte de resultados con EOD como diseños de investigación, en una versión en idioma inglés. Se llevó a cabo un estudio bietápico con metodología cualitativa. En una primera etapa, se diseñó una propuesta, mediante la recopilación de ítems y dominios a partir de una extensa revisión de la literatura relacionada. En la segunda, se construyó un instrumento, aplicando reducción de ítems y dominios a través de un panel de 45 expertos, compuesto por académicos clínicos, revisores y editores de revistas biomédicas; y expertos en metodología de investigación. Estos, trabajaron determinando la validez de fachada y de contenido del instrumento. Los ítems y dominios incorporados al instrumento final fueron aquellos en los que se logró más de un 80 % de acuerdo entre los participantes (36 de 45). Se generó de este modo un instrumento compuesto por 19 ítems, agrupados en 4 dominios. Se reportan las características del diseño, construcción y validación de una lista de verificación en versión en inglés, que puede ser utilizada por autores, revisores y editores de revistas, para la escritura y revisión de artículos en los que se utilicen EOD como diseños investigación.

Análisis de la mortalidad por enfermedades cerebrovasculares en Costa Rica entre los años 1920-2009 / Analysis of cerebrovascular disease mortality in Costa Rica between the years 1920-2009

Resumen Objetivo Analizar la tendencia de la mortalidad por enfermedades cerebrovasculares en Costa Rica y su impacto sobre la mortalidad general entre los años 1920-2009. Métodos Se obtuvieron las tasas brutas por trienios y quinquenios del lapso estudiado, así como las tasas estandarizadas del grupo etario entre 35-74 años durante el lapso 1970-2009. Igualmente, la proporción de muertes por accidente cerebrovascular (ACV) en relación a la mortalidad general. Resultados La tendencia durante el periodo 1920-1969 fue hacia el ascenso (r = 0.82, r2 = 0.67, betha: 0.30; p = ≤ 0,00) en tanto que para el lapso 1970 ocurrió lo contrario (r = 0.42, r2 = 0.18, betha: −0.064; p = 0.01). Las tasas ajustadas para el grupo 35-74 años entre 1970-2009 descendieron en un 58.03%, siendo la tendencia estadísticamente significante para ambos sexos; varones: r2 = 0.94, betha: −0.73; mujeres: r2 = 0.97, betha: 0.95. El máximo porcentaje de la mortalidad por ACV en relación a la mortalidad general fue de 7,22 alcanzado en el quinquenio 1985-1989, descendiendo a 5.92% en el periodo 2005-2009. Conclusiones En el contexto latinoamericano, las tasas de mortalidad por ACV en Costa Rica son bajas, pero todavía constituyen un grave problema de salud pública por la gran mortalidad, morbilidad y discapacidad que ocasionan, pese a una tendencia hacia el descenso.

Abstract Objective To analyze the trend in mortality from cerebrovascular diseases in Costa Rica and its impact on overall mortality from 1920 to 2009. Methods Crude rates by triennium and quinquennium were obtained. We also obtanied age standardized rates in the age group 35-74 years during the period 1970-2009. Finally we got the death percentage from stroke in relation to overall mortality. Results The trend for the period 1920-1969 was to the upside (r=0.82, r2 =0.67, betha 0.30; P≤0.00) whereas for the period 1970 occurred otherwise (r=0.42, r2 =0.18, betha −0064; P=0.01). Adjusted for the group 35-74 years between 1970-2009 rates decreased by 58.03% was statistically significant trend for both sexes; men r2=0.94, betha: —0.73; women: r2=0.97, betha: 0.95. The maximum percentage of mortality from stroke in relation to the overall mortality was 7.22 in the period 1985-1989 reached down to 5.92% in 2005-2009. Conclusions In the Latin American context, stroke mortality rates in Costa Rica are low but still represent a serious public health problem by the high mortality, morbidity and disability that they cause, despite a downward trend.

Prevalencia de factores de riesgo de enfermedades crónicas no transmisibles en funcionarios de una institución bancaria del Uruguay / Prevalence of risk factors for chronic non communicable diseases in employees of a bank in Uruguay

Introducción: las enfermedades crónicas no transmisibles, fundamentalmente la enfermedad cardiovascular, la diabetes, el cáncer y las enfermedades respiratorias, son la primera causa de muerte en los países desarrollados y el Uruguay no escapa a esta realidad. El 30% de esas muertes se produce antes de los 60 años. Las discapacidades generadas por estas enfermedades tienen un alto impacto social y también económico. Los principales factores de riesgo conductuales para el desarrollo de estas enfermedades se relacionan con los estilos de vida: alimentación inadecuada, sedentarismo y consumo de alcohol y tabaco. Estas conductas llevan a desarrollar factores de riesgo metabólicos: obesidad, dislipemias, hipertensión arterial y prediabetes. Estos factores de riesgo pueden ser modificados, pudiéndose así prevenir las propias enfermedades no transmisibles. El lugar de trabajo está reconocido mundialmente como un marco adecuado para la promoción de salud. Objetivo: conocer la prevalencia de factores de riesgo conductuales y metabólicos en funcionarios de una institución bancaria estatal del Uruguay. Metodología: estudio descriptivo, de corte transversal, sobre una muestra probabilística de los funcionarios de una institución bancaria. Se aplicó cuestionario y se realizó antropometría. Para estudiar la asociación de los factores de riesgo se usaron tablas de contingencia y modelos de regresión logística. Resultados: se encuestaron 136 funcionarios. La distribución por sexo fue pareja, la edad promedio fue de 48 años. El 16% refirió fumar actualmente; 58% beber alcohol en forma semanal; 85% consumir fruta y verdura por debajo de las recomendaciones, y 46% no realizar actividad física. El 63% presentó sobrepeso u obesidad; 30% declaró ser hipertenso; 33% tener una dislipemia, y 12% presentar prediabetes. La obesidad abdominal se asoció con mayor riesgo de desarrollar hipertensión arterial y prediabetes. El tabaquismo y la inactividad física son menos frecuentes en esta población que en poblaciones similares en otros países de la región, sin embargo los factores de riesgo metabólicos tienen casi la misma prevalencia. Conclusiones: si bien no se trata de una población representativa del país, se hizo una comparación con la situación nacional y en relación con la población adulta uruguaya se encontró una mayor prevalencia de obesidad, hipertensión arterial, hipercolesterolemia, prediabetes, sedentarismo, consumo inadecuado de frutas y verduras y consumo de alcohol en forma semanal. A su vez, esta población presentó una prevalencia menor de tabaquismo, sobreagregado de sodio, consumo de alimentos que son una fuente de grasas trans e ingesta de bebidas azucaradas. Estos resultados representan un aporte para futuras intervenciones.

Introduction: Non communicable diseases, mainly cardiovascular disease, diabetes, cancer and respiratory diseases are the leading cause of death in developed countries and Uruguay does not escape this reality. 30% of these deaths occur before age 60 years. Disability generated by these diseases have a high social and economic impact. The main behavioral risk factors for the development of these diseases are related to lifestyle: poor diet, sedentary lifestyle, alcohol consumption and smoking. These behaviors lead to developing metabolic risk factors: obesity, dyslipidemia, hypertension and prediabetes. These risk factors can be modified, preventing the non-communicable diseases development. The workplace is recognized worldwide as a framework for health promotion. Objective: To make a situation diagnosis of the prevalence of behavioral and metabolic risk factors in employees of a state bank in Uruguay. Methodology: Descriptive, cross-sectional study, based on a random sample of the bank employees. A survey and anthropometric measures were performed. To study the association of risk factors contingency tables and logistic regression models were used. Results: 136 employees were surveyed. The gender distribution was similar, the average age was 48 years. 16% reported currently smoking, 58% drink alcohol weekly, 85% consume fruits and vegetables below the recommendations and 46% did not do physical activity. 63% had overweight or were obese, 30% reported hypertension, 33% high cholesterol and 12% prediabetes. Abdominal obesity was associated with increased risk of developing high blood pressure and prediabetes. Smoking and physical inactivity behave better in this population than in similar populations of other countries in the region, however the metabolic risk factors have almost the same prevalence. Conclusions: Even if not representative of the whole country, compared to the adult Uruguayan population this population has a higher prevalence of obesity, hypertension, hypercholesterolemia, prediabetes, sedentary lifestyle, inadequate intake of fruits and vegetables and alcohol consumption on a weekly basis. In turn, presented lower prevalence of smoking, added sodium intake and consumption of foods that contain trans fats and sugary drinks. These results represent a contribution for future interventions.

[Analysis of cerebrovascular disease mortality in Costa Rica between the years 1920-2009]. / Análisis de la mortalidad por enfermedades cerebrovasculares en Costa Rica entre los años 1920-2009.

OBJECTIVE: To analyze the trend in mortality from cerebrovascular diseases in Costa Rica and its impact on overall mortality from 1920 to 2009. METHODS: Crude rates by triennium and quinquennium were obtained. We also obtanied age standardized rates in the age group 35-74 years during the period 1970-2009. Finally we got the death percentage from stroke in relation to overall mortality. RESULTS: The trend for the period 1920-1969 was to the upside (r=0.82, r2=0.67, betha 0.30; P≤0.00) whereas for the period 1970 occurred otherwise (r=0.42, r2=0.18, betha -0064; P=0.01). Adjusted for the group 35-74 years between 1970-2009 rates decreased by 58.03% was statistically significant trend for both sexes; men r2=0.94, betha: -0.73; women: r2=0.97, betha: 0.95. The maximum percentage of mortality from stroke in relation to the overall mortality was 7.22 in the period 1985-1989 reached down to 5.92% in 2005-2009. CONCLUSIONS: In the Latin American context, stroke mortality rates in Costa Rica are low but still represent a serious public health problem by the high mortality, morbidity and disability that they cause, despite a downward trend.

Should magnesium sulfate be administered to women with mild pre-eclampsia? A systematic review of published reports on eclampsia.

AIM: Magnesium sulfate is an evidence-based anticonvulsant drug used to prevent and control eclampsia. Controversy persists on routine administration of magnesium sulfate in cases of pre-eclampsia without severe features. Our objective was to assess the pattern of blood pressure and maternal symptoms preceding eclamptic seizure based on the current published work. MATERIAL AND METHODS: A comprehensive computer-based publication search was conducted in the African Journals Online, Google scholar, HINARI, PubMed, and MEDLINE databases and the Cochrane library to identify descriptive study reports for blood pressure, severity symptoms or stage of pregnancy during convulsion in women with eclampsia. RESULTS: A total of 59 publications were eligible for this review. Overall, 21,149 eclamptic women from 26 countries were included for the interest of one or more of the selected variables. Out of 18,488 eclamptic women, the proportion of antepartum, intrapartum and post-partum eclampsia was 59%, 20% and 21%, respectively. Out of 3443 eclamptic women, 25% were normotensive; 20% had mild-to-moderate hypertension; 32% had severe hypertension; and 21% were hypertensive but unclassified. Out of 2163 eclamptic women, 66% and 27% had a headache and visual disturbance, respectively, preceding the occurrence of convulsion. Out of 2053 eclamptic women, 25% had epigastric area pain, and out of 1092 women with eclampsia, 25% were asymptomatic. CONCLUSION: Although eclampsia is known to result from severe pre-eclampsia with or without organ function derangement, this review has revealed that a significant number of eclamptic women had either normal blood pressure or mild-to-moderate hypertension immediately before seizure. The findings are apparently in support of initiating magnesium sulfate prophylaxis to all women with mild pre-eclampsia.

Selection bias of Internet panel surveys: a comparison with a paper-based survey and national governmental statistics in Japan.

PURPOSE: To investigate the selection bias of an Internet panel survey organized by a commercial company. METHODS: A descriptive study was conducted. The authors compared the characteristics of the Internet panel survey with a national paper-based survey and with national governmental statistics in Japan. RESULTS: The participants in the Internet panel survey were composed of more women, were older, and resided in large cities. Regardless of age and sex, the prevalence of highly educated people in the Internet panel survey was higher than in the paper-based survey and the national statistics. In men, the prevalence of heavy drinkers among the 30- to 49-year-old population and of habitual smokers among the 20- to 49-year-old population in the Internet panel survey was lower than what was found in the national statistics. CONCLUSIONS: The estimated characteristics of commercial Internet panel surveys were quite different from the national statistical data. In a commercial Internet panel survey, selection bias should not be underestimated.

Recurrencias de malaria por Plasmodium vivax según el uso de primaquina: análisis de estudios descriptivos longitudinales / Plasmodium vivax malaria recurrence according to the use of primaquine: analysis of longitudinal descriptive studies

ANTECEDENTES: la primaquina (PQ) es el único medicamento disponible en el mercado para prevenir recurrencias del paludismo por Plasmodium vivax pero varios aspectos suyos se desconocen. OBJETIVO: comparar regímenes de PQ para prevenir recurrencias de malaria vivax. METODOLOGÍA: revisión sistemática de datos. RESULTADOS: 1. ¿Según los estudios descriptivos, la PQ es eficaz para prevenir las recurrencias del paludismo vivax? Sí. La comparación de estudios que no usaron PQ con otros que sí la aplicaron, en cualquier esquema, mostró que si no se usa PQ la recurrencia es altamente probable. 2. ¿Tienen la misma eficacia dosis diarias (mg/kg) iguales pero dosis totales diferentes? La dosis total de 75 mg es tanto o más eficaz que la de 210 mg. 3. ¿La eficacia anti-recurrencias depende del lugar donde sucede la infección? Si. Hay variación según país y región. 4. ¿La frecuencia de recurrencias depende del tiempo de seguimiento post tratamiento? La respuesta no es uniforme para todos los lugares. CONCLUSIONES: la PQ resultó eficaz para prevenir las recurrencias, pero no fue 100%. Las dosis totales de 210 y de 75 mg tuvieron igual eficacia, pero 75 mg sólo han sido evaluados en India, donde P. vivax parece ser más sensible a la PQ que en otros lugares. Parece indudable la influencia del lugar en la proporción de recurrencias, incluso con una misma dosis total. El papel del tiempo de seguimiento no resultó claro. Deben evaluarse esquemas alternativos al estándar, que tiene eficacia promedio de 90% o más.

BACKGROUND: primaquine (PQ) is the only drug available in the market to prevent Plasmodium vivax malaria recurrence, but several aspects are still unknown. OBJECTIVE: To compare PQ regimens to prevent recurrence of vivax malaria. METHODS: systematic review and meta-analysis of data. RESULTS: 1. According to descriptive studies, is PQ effective in preventing recurrence of vivax malaria? Yes. The comparison of studies that did not use PQ to others that did, using any regimen, showed that if PQ is not used, recurrence is highly likely. 2. Are equal daily doses effective (mg/kg) but total doses different? The total dose of 75 mg is equally or more effective than 210 mg. 3. Does the efficacy depend on where the infection happens? Yes. There is variation by country and region. 4. Does the recurrence rate depend on the post-treatment time follow-up? The answer is not uniform everywhere. CONCLUSIONS: Although not 100%, PQ is effective in preventing recurrence. Total doses of 210 and 75 mg are equally effective, but 75 mg alone has been evaluated in India, where P. vivax seems to respond better to PQ than elsewhere. The effect of place in the proportion of recurrences seems evident, even using the same total dose. The role of follow-up time is not clear. Although the standard regimen has an average effectiveness of 90% or more, alternative regimens should be assessed.