ABSTRACT
RESUMO Objetivo: comparar o perfil demográfico, a sintomatologia e as comorbidades de adultos e idosos notificados com COVID-19 nas capitais brasileiras e no Distrito Federal - DF. Métodos: estudo ecológico desenvolvido a partir dos dados da plataforma online e-SUS Notifica, preenchidos até dia 4 de janeiro de 2021, com amostra constituída por 1.416.252 indivíduos, utilizando como critérios de inclusão: ter idade > 20 anos; residir nas capitais brasileiras ou no Distrito Federal - DF; e apresentar resultado do teste positivo para COVID-19. A análise descritiva contou com a exposição das frequências absoluta e relativa e medidas de tendência central. Para a análise inferencial, aplicou-se o teste qui-quadrado de Pearson, considerando diferença significativa para valores de p<0,05. Resultados: predominou sexo masculino (52%), com média de idade de 43,29 ± 14,85 anos. Os indivíduos apresentaram tosse (45,4%), febre (38,8%) e outros sintomas (83,1%). As comorbidades mais prevalentes foram: doenças cardíacas (7,1%) e diabetes (4,5%). Houve diferença significativa (p<0,001) entre as regiões brasileiras, ao comparar sexo, idade, ser profissional da saúde, sintomas e comorbidades. Conclusão: os dados contribuíram para o conhecimento acerca do processo epidêmico de COVID-19 no Brasil no primeiro ano de pandemia e demonstraram a distribuição dos casos e as relações existentes entre perfil demográfico, sintomatologia e doenças preexistentes com os agrupados das capitais brasileiras.
RESUMEN Objetivo: comparar el perfil demográfico, la sintomatología y las comorbilidades de los adultos y ancianos notificados con COVID-19 en las capitales brasileñas y el Distrito Federal - DF. Métodos: estudio ecológico, desarrollado a partir de los datos de la plataforma online e-SUS Notifica, completados hasta el 4 de enero de 2021, con una muestra compuesta por 1.416.252 individuos, utilizando como criterios de inclusión: edad > 20 años; residir en capitales brasileñas o en el Distrito Federal - DF; y presentar un resultado positivo en la prueba de COVID-19. El análisis descriptivo incluyó la presentación de frecuencias absolutas y relativas y medidas de tendencia central. Para el análisis inferencial, se aplicó la prueba de chi-cuadrado de Pearson, considerando la diferencia significativa para valores p <0,05. Resultados: predominó el sexo masculino (52%), con una edad media de 43,29 ± 14,85 años. Los individuos presentaron tos (45,4%), fiebre (38,8%) y otros síntomas (83,1%). Las comorbilidades más prevalentes fueron las cardiopatías (7,1%) y la diabetes (4,5%). Hubo una diferencia significativa (p<0,001) entre las regiones brasileñas al comparar el género, la edad, ser profesional de la salud, los síntomas y las comorbilidades. Conclusión: los datos contribuyeron al conocimiento del proceso epidémico del COVID-19 en Brasil, en el primer año de pandemia, y demostraron la distribución de los casos y las relaciones existentes entre el perfil demográfico, la sintomatología y las enfermedades preexistentes con los agrupados de las capitales brasileñas.
ABSTRACT Objective: to compare the demographic profile, symptoms and comorbidities of adults and elderly people notified with COVID-19 in Brazilian capitals and the Distrito Federal - DF. Methods: ecological study developed from data from the online platform e-SUS Notifica, completed until January 4, 2021, with a sample consisting of 1,416,252 individuals, using as inclusion criteria: being > 20 years old; reside in Brazilian capitals or the Distrito Federal - DF; and present a positive test result for COVID-19. The descriptive analysis included the exposure of absolute and relative frequencies and measures of central tendency. For the inferential analysis, Pearson's chi-square test was applied, considering a significant difference for values of p<0.05. Results: males predominated (52%), with a mean age of 43.29 ± 14.85 years. Subjects had cough (45.4%), fever (38.8%) and other symptoms (83.1%). The most prevalent comorbidities were: heart disease (7.1%) and diabetes (4.5%). There was a significant difference (p<0.001) between Brazilian regions, when comparing sex, age, being a health professional, symptoms and comorbidities. Conclusion: the data contributed to the knowledge about the epidemic process of COVID-19 in Brazil in the first year of the pandemic and demonstrated the distribution of cases and the relationships between demographic profile, symptoms and pre-existing diseases with the groups of Brazilian capitals.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Adult Health , COVID-19/epidemiology , Comorbidity , Statistical Distributions , Demography/statistics & numerical data , Disease Notification , Pandemics , Central Trend MeasuresABSTRACT
Introducción: Los datos epidemiológicos de la COVID-19 de China, Estados Unidos, Korea del Sur, Inglaterra, España, Italia, Alemania, Holanda y Suecia se ajustan a la distribución de la Ley de Newcomb-Benford, lo cual indicaría que no existe falsificación de datos. En Ecuador no se ha realizado un tratamiento de los datos con esta metodología. Objetivo: Conocer si los datos proporcionados por el Ministerio de Salud Pública del Ecuador, con respecto a los casos confirmados con la COVID-19 por provincia de atención, se ajustan a la Ley de Newcomb-Benford.Material y métodos: Se utilizó la base de datos epidemiológicos del Ministerio de Salud Pública del Ecuador, donde se aplicó la Ley de Newcomb-Benford a los datos epidemiológicos y luego se realizó la prueba de Chi-cuadrado de bondad de ajuste. Resultados: Se obtuvo un valor p de 0,872 que es mayor al valor de significancia α = 0,05 y un valor de Chi-cuadrado = 3,82722, que es menor al valor crítico de Chi-cuadrado 15,5073. Conclusión: Se aceptó la hipótesis nula, asumiendo que los datos epidemiológicos si se ajustan a la Ley de Newcomb-Benford y por ende no existiría datos falsificados.
Background: The epidemiological data of the COVID-19 from China, the United States, Sou-th Korea, England, Spain, Italy, Germany, Holland and Sweden are adjusted to the distribu-tion of the Newcomb-Benford Law, which would indicate that there is no falsification of data. In Ecuador, no data processing has been carried out with this methodology.Objective: To know if the data provided by the Ministry of Public Health of Ecuador, with respect to the confirmed cases with the COVID-19 by province of care, are adjusted to New-comb-Benford Law.Material and methods: The epidemiological database of the Ministry of Public Health of Ecuador was used, where the Newcomb-Benford Law was applied to the epidemiological data and then the Chi-square goodness-of-fit test was performed.Results: A p value of 0.872 was obtained, which is greater than the significance va-lue α = 0.05 and a Chi-square value = 3.82722, which is less than the critical value of Chi-square 15.5073. Conclusion: The null hypothesis was accepted, if the epidemiological data do conform to the Newcomb-Benford Law and therefore there would be no falsified data.
Subject(s)
Humans , Male , Female , Statistical Distributions , COVID-19 , COVID-19/epidemiology , Health Statistics , Epidemiology , EcuadorABSTRACT
Introducción. La pandemia de COVID es un desafío para la vigilancia en salud pública y una oportunidad para evaluar sus fortalezas y debilidades en aras de mejorar la respuesta. Objetivo. Evaluar el desempeño del sistema de vigilancia en salud pública colombiano durante los primeros 50 días de la pandemia de COVID-19 en el país. Materiales y métodos. Se analizaron los datos publicados entre el 6 de marzo y el 24 de abril de 2020 por el Instituto Nacional de Salud y la Organización Mundial de Salud (OMS). Se consideraron en la evaluación: i) la calidad de los datos según la ley de Benford y ii) la oportunidad de la información, medida como la diferencia en fechas entre los datos generados en el Instituto Nacional de Salud y los recogidos en el informe situacional de la OMS. La variabilidad en el cumplimiento de la ley de Benford se evaluó con los valores de p en las pruebas de razón del logaritmo de la verosimilitud, ji al cuadrado o exacta de Moreno. Resultados. Hasta el 24 de abril hubo 4.881 casos de COVID-19 en Colombia. En la mayoría de los primeros 50 días se cumplió la ley de Benford, excepto en los primeros días de la epidemia. La diferencia entre los informes del Instituto Nacional de Salud y la OMS ha dependido, en gran medida, de la diferencia en los horarios de cierre de la información. Conclusión. En general, el sistema de vigilancia en salud pública colombiano cumplió con la ley de Benford, lo cual sugiere que hubo calidad en los datos. En futuros estudios que comparen el desempeño de los departamentos y distritos se podrá mejorar el diagnóstico de la vigilancia en salud pública del país.
Introduction: The COVID pandemic is a challenge for public health surveillance and an opportunity to assess its strengths and weaknesses to improve the response. Objective: To evaluate the performance of the Colombian public health surveillance system during the first 50 days of the COVID-19 pandemic in the country. Materials and methods: We analyzed the data published between March 6 and April 24, 2020, by the Instituto Nacional de Salud and the World Health Organization (WHO). We evaluated: i) the quality of the data according to the fulfillment of Benford's law, and ii) the timeliness of the information measured as the difference in dates between the data generated by the Instituto Nacional de Salud and WHO's situational reports. We assessed the fulfillment of Benford's law using the p values of the log-likelihood ratio, the chi square or Moreno's exact tests. Results: Until April 24 there were 4,881 cases of COVID-19 in Colombia. During most of the first 50 days of the pandemic, Benford's law was fulfilled except the first days of the epidemic. The difference between Instituto Nacional de Salud and WHO reports largely depends on the different reporting times. Conclusion: In general, the Colombian public health surveillance system fulfilled Benford's law suggesting that there was quality in the data. Future studies comparing the performance of the departments and districts will improve the diagnosis of the Colombian surveillance system.
Subject(s)
Coronavirus Infections , Epidemiological Monitoring , Statistical Distributions , Colombia , Disease Notification , EpidemicsABSTRACT
Introducción. La vigilancia en salud pública y las decisiones sanitarias recomendadas son fundamentales para el manejo adecuado de la pandemia de SARS-CoV-2. Objetivo. Hacer una evaluación comparativa del desempeño de los departamentos colombianos de este atributo del sistema de vigilancia con base en la calidad de los datos y construir la clasificación nacional según el desempeño. Materiales y métodos. Se analizaron los casos acumulados publicados por el Instituto Nacional de Salud entre el 6 de marzo y el 1° de septiembre de 2020. Para la comparación, los análisis consideraron el día en que se diagnosticó el primer caso como la primera fecha de análisis de cada departamento. El cumplimiento de la ley de Benford se evaluó con los valores de p en las pruebas de razón del logaritmo de la verosimilitud o ji al cuadrado. Se completó el análisis del atributo de calidad del dato con la letalidad observada en cada departamento, y se estableció la clasificación según el desempeño. Resultados. La ciudad de Bogotá y el departamento del Valle del Cauca tuvieron un desempeño óptimo en la vigilancia en salud pública durante todo el periodo observado. Los datos sugieren que los departamentos de Antioquia, Nariño y Tolima tuvieron una buena contención y una adecuada vigilancia en salud pública después de la apertura económica iniciada el 1° de junio de 2020. Conclusión. Se obtuvo una clasificación de los departamentos y de Bogotá según la calidad de los datos de vigilancia en salud pública. Los mejores cinco entes territoriales pueden ser casos de estudio para determinar los elementos asociados con el buen desempeño.
Introduction: Public health surveillance together with good sanitary decisions is essential for the proper management of the SARS-CoV-2 pandemic. Objective: To compare the performance of Colombian departments based on the quality of the data and to build the national ranking. Materials and methods: We analyzed the accumulated cases published between March 6 and September 1, 2020, by the Instituto Nacional de Salud. To achieve comparability, the analyses considered the day the first case was diagnosed as the first analysis date for each department. The fulfillment of Benford's law was assessed with p-values in the log-likelihood ratio or chi-square tests. The analysis was completed with the lethality observed in each department and then the performance ranking was established. Results: Bogotá and Valle del Cauca had optimal public health surveillance performance all along. The data suggest that Antioquia, Nariño, and Tolima had good containment and adequate public health surveillance after the economic opening beginning on June 1, 2020. Conclusion: We obtained the ranking of the departments regarding the quality of public health surveillance data. The best five departments can be case studies to identify the elements associated with good performance.
Subject(s)
Coronavirus Infections , Epidemiological Monitoring , Statistical Distributions , Colombia , Disease Notification , EpidemicsABSTRACT
ABSTRACT Objective: To systematically review the literature as for the level of evidence of predictive equations of VO2peak through the 20-meter shuttle run test (20m-SRT) in children and adolescents. Data sources: Searches were conducted independently by two researchers, according to the procedures adopted by PRISMA, in the electronic databases MEDLINE via PubMed, ScienceDirect, Web of Science, LILACS and SciELO, for articles published until September 2017 in English and Portuguese. The inclusion criteria were: original studies, abstract available, using predictive equations of VO2peak through 20m-SRT, conducted with adolescents and/or children, non-athletes, and mentioning correlation analysis between predicted and measured VO2peak. The level of evidence of equations was based on the risk of bias of the studies using the following criteria: sample number, sample characteristics, and statistical analysis. Data synthesis: Eighteen studies were selected, in which fifteen equations were found and analyzed. The studies had been conducted with samples composed of subjects of both sexes, aged 8 to 19 years. Equations of Léger and Matsuzaka had their level of evidence classified as high, and estimation ranged between r=0.54-0.90 and r=0.65-0.90. Equations by Ruiz, Barnett and Matsuzaka had their level of evidence classified as moderate, and estimation ranged between r=0.75-0.96, r=0.66-0.84 and r=0.66-0.89, respectively. Conclusions: Matsuzaka's equation presented satisfactory parameters for estimates of VO2peak in children and adolescents. Although not explored in equations, body adiposity and pubertal stage are significantly associated with cardiorespiratory fitness in children and adolescents.
RESUMO Objetivo: Revisar sistematicamente na literatura o nível de evidência das equações preditivas do pico de consumo de oxigênio (VO2pico) por meio do teste de shuttle run de 20 metros (SR-20m) em crianças e adolescentes. Fonte de dados: As buscas foram conduzidas nas bases de dados eletrônicas Medical Literature Analysis and Retrieval System Online (MEDLINE) via PubMed, ScienceDirect, Web of Science, Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS) e Scientific Electronic Library Online (SciELO), de agosto a setembro de 2017, nos idiomas inglês e português. Os critérios de inclusão utilizados foram: estudos originais, com resumo disponível, com equações para predição do VO2pico por meio do SR-20m, adolescentes e/ou crianças, não atletas e com análise correlacional do VO2pico predito e mensurado. O nível de evidência das equações foi caracterizado com base no risco de viés dos estudos, no qual se adotou os seguintes critérios: número da amostra, características da amostra e análise estatística. Síntese dos dados: Dezoito estudos foram selecionados, nos quais 12 equações foram encontradas e analisadas. Os estudos foram conduzidos com amostras de ambos os sexos com idades de oito a 19 anos. As equações de Léger e Matsuzaka foram classificadas com forte nível de evidência, com variação de amplitude de estimativa entre r=0,54-0,90 e r=0,65-0,90. Enquanto as equações Ruiz, Barnett e Matsuzaka foram consideradas de evidência moderada, com variação de amplitude de estimativa entre r=0,75-0,96, r=0,66-0,84 e r=0,66-0,89, respectivamente. Conclusões: A equação de Matsuzaka apresentou parâmetros satisfatórios para estimar o VO2pico em crianças e adolescentes. Embora não explorados em equações, a adiposidade corporal e o estágio puberal demonstram associações relevantes com a aptidão cardiorrespiratória em crianças e adolescentes.
Subject(s)
Humans , Child , Adolescent , Oxygen Consumption , Running/physiology , Cardiorespiratory Fitness/physiology , Statistical Distributions , Reproducibility of Results , Exercise Test/methods , Exercise Test/statistics & numerical dataABSTRACT
The aims of this study were to analyze the spatial distribution of dental caries among preschool children and create equiprobable scenarios of its occurrence in the city of Canoas, Southern Brazil. Trained, calibrated dentists examined 1,100 children enrolled at public preschools to determine dental caries experience following World Health Organization criteria. The ArcGis 10.0 Geographic Information System was used to analyze spatial and nonspatial data. Geostatistical Modeling Software was used in geostatistical analyses to detect spatial continuity and create maps using stochastic simulation. Overall prevalence of dental caries was 25% with intraurban differentials in distribution. The findings enabled the generation of 100 equiprobable scenarios and maps with the best and worst scenarios. The highest concentration of dental caries occurrence was found in the western portion of the city, while the lowest probability of occurrence was found in the northern and southern portions. Identifying spatial inequalities in health conditions and visualizing them through the creation of maps can help to qualify and organize public health inter ventions and provide information to gain better understanding of the influence of the surrounding environment on adverse health conditions (AU)
O objetivo do estudo foi analisar a distribuição espacial de cárie dentária entre crianças préescolares e criar cenários equiprováveis da ocorrência deste agravo na cidade de Canoas, sul do Brasil. Exame clínico para detecção da experiência de cárie dentária de acordo com o critério da Organização Mundial da Saúde foi realizado por cirurgiõesdentistas treinados e calibrados em uma amostra de 1.100 crianças matriculadas em escolas de educação infantil. Utilizouse o Sistema de Informação Geográfica ArcGis 10.0 para a inserção de dados espaciais e não espaciais. O programa GeoMS foi utilizado nas análises geoestatísticas para a detecção da continuidade espacial e construção de mapas através da simulação estocástica. A prevalência de cárie dentária foi 25%, com diferenciais intraurbanos na sua distribuição. Os resultados permitiram a construção de 100 cenários equiprováveis e de mapas com os melhores e piores cenários no município. Uma maior concentração de ocorrên cias foi encontrada na região oeste da cidade, enquanto que as regiões norte e sul tiveram a menor probabilidade de ocorrência de cárie dentária. A identificação de desigualdades espaciais em condições de saúde e a sua visualização por meio de mapas pode auxiliar na qualificação e organização de intervenções de saúde pública, assim como fornecer subsídios que ajudem no entendimento da influência do meio ambiente sobre as condições adversas de saúde (AU)
Subject(s)
Humans , Male , Female , Child, Preschool , Statistical Distributions , Residence Characteristics , Dental Caries/epidemiology , Brazil , Cross-Sectional Studies , Geographic MappingABSTRACT
La tuberculosis es una de las 10 principales causas de mortalidad en el mundo. En 2016, 10,4 millones de personas enfermaron de tuberculosis y 1,7 millones murieron por esta enfermedad. Más del 95% de las muertes por tuberculosis se producen en países de ingresos bajos y medianos. La incidencia mundial de la TB está disminuyendo en aproximadamente un 2% al año, ritmo que habría que acelerar al 45% anual si se quieren alcanzar las metas fijadas para 2020 en la Estrategia Fin a la Tuberculosis. La Estrategia Fin a la Tuberculosis de la OMS y los Objetivos de Desarrollo Sostenible (ODS) de las Naciones Unidas, comparten el objetivo común de poner fin a la epidemia mundial de TB para el periodo 2016-2035. Las metas de dicha estrategia consisten en reducir su mortalidad en un 90%, y su incidencia en un 80% de aquí a 2030. En este informe, junto con la presentación y actualización mensual y sistemática de los datos, se realiza un breve análisis de la situación de los menores de 20 años. Dada la importancia del evento en este grupo de edad, se considera significativo que, dentro de la prioridad que tiene el abordaje de la TBC en general, se le dé mayor visibilidad a la situación de los niños y adolescentes. (AU)
Subject(s)
Humans , Male , Female , Child , Adolescent , Tuberculosis/diagnosis , Tuberculosis/prevention & control , Tuberculosis/epidemiology , Statistical Distributions , Child Health/statistics & numerical data , Adolescent Health Services/statistics & numerical data , Disease Notification/methods , Disease Notification/statistics & numerical data , Patient CareABSTRACT
Objetivo: evaluar la cantidad, el origen y el tipo de publicaciones incluidas en la Revista de la Asociación Odontológica Argentina (RAOA) en los últimos dieciséis años. Materiales y métodos: Se recolectaron todos los volúmenes de la RAOA publicados entre 2001 y 2016. Se evaluaron y compararon la cantidad y el tipo de publicaciones realizadas, teniendo en cuenta categorías como provincia, país, institución universitaria y especialidad, por medio de la prueba estadística de las frecuencias absolutas y relativas delas diferentes categorías. Resultados: En total, se publicaron 535 artículos, y se observó una tendencia a la disminución en los últimos años. La Endodoncia fue la especialidad que más publicó (25 por ciento), con mayor cantidad de investigaciones científicas y revisiones; mientras que la Patología bucomaxilofacial publicó más casos clínicos. La mayoría de las publicaciones fueron realizadas en el ámbito no universitario. La provincia de Buenos Aires y la Ciudad Autónoma de Buenos Aires son los distritos geográficos que más aportes realizaron a la revista. Conclusiones: La RAOA puede ser considerada una base referencial odontológica para el análisis de la actividad científica en el ámbito latinoamericano.
Aim: to evaluate the amount, origin and type of publicationsincluded in the journal of the Argentine Dental Association(RAOA) in the last sixteen years.Materials and methods: All volumes of the RAOA werecollected during 2001 and 2016. The number and type of publicationswere analyzed and compared with the state, country,university institution and specialties from which they wereoriginated, statistically calculating the absolute and relativefrequencies of the different categories.Results: A total of 535 articles have been published,with a decreasing yearly tendency recent years. Endodonticswas the specialty with more published articles, most of themscientific research and reviews, while oral and maxillofacialpathology mainly published clinical cases. The majority ofpublications were made by non-university institutions. Theprovince of Buenos Aires and the city of Buenos Aires mademost of the contribution to the journal.Conclusions: The journal of the AOA can be considereda useful reference for the analysis of scientific production inLatin America.
Subject(s)
Humans , Bibliometrics , Journalism, Dental/history , Periodicals as Topic , Societies, Dental/statistics & numerical data , Argentina , Dental Research , Specialties, Dental , Data Interpretation, Statistical , Statistical DistributionsABSTRACT
According to the central limit theorem, the means of a random sample of size, n, from a population with mean, µ, and variance, σ², distribute normally with mean, µ, and variance, σ²/n. Using the central limit theorem, a variety of parametric tests have been developed under assumptions about the parameters that determine the population probability distribution. Compared to non-parametric tests, which do not require any assumptions about the population probability distribution, parametric tests produce more accurate and precise estimates with higher statistical powers. However, many medical researchers use parametric tests to present their data without knowledge of the contribution of the central limit theorem to the development of such tests. Thus, this review presents the basic concepts of the central limit theorem and its role in binomial distributions and the Student's t-test, and provides an example of the sampling distributions of small populations. A proof of the central limit theorem is also described with the mathematical concepts required for its near-complete understanding.
Subject(s)
Mathematical Concepts , Normal Distribution , Statistical DistributionsABSTRACT
ABSTRACT Introducción. El dengue es la principal arbovirosis en el mundo. En Paraguay reapareció en 1988-1989, y en el 2011 se produjo uno de los mayores brotes epidémicos. Objetivo. Evaluar el desempeño del sistema de vigilancia epidemiológica del dengue en Paraguay entre 2009 y 2011. Materiales y métodos. Se hizo un estudio ecológico basado en datos secundarios de la vigilancia epidemiológica. Con base en la distribución esperada según la ley de Benford, se analizaron los casos notificados de la enfermedad; para tal fin, se usaron los primeros y segundos dígitos de los registros globales y estratificados por regiones, estaciones, densidad poblacional, indicadores de las condiciones de la vivienda y número de cabezas de ganado bovino. Resultados. El sistema de vigilancia epidemiológica se desempeñó mejor durante los periodos no epidémicos, y en los departamentos donde existen mejores condiciones de vivienda y pocas cabezas de ganado bovino. Conclusión. Dadas las diferencias de desempeño, se recomendó que el sistema mantenga la alerta incluso cuando no se espere un mayor número de casos. El método propuesto para evaluar la notificación de casos es fácil de transferir al personal operativo.
RESUMEN Introduction: Dengue is the most widespread arbovirus worldwide. In Paraguay, it reappeared in 1988-1989, with one of the largest epidemic outbreaks occurring in 2011. Objective: To evaluate the performance of the dengue epidemiological surveillance system in Paraguay between 2009 and 2011. Materials and methods: We conducted an ecological study with secondary epidemiological surveillance data. We analyzed notified cases of the disease based on the distribution expected by Benford's law. To this end, we used the first and second digits from the global records stratified by region, season, population density, indicators of housing conditions and heads of cattle. Results: The epidemiological surveillance system performed better during non-epidemic periods and in the states with better housing conditions and fewer heads of cattle. Conclusion: Given that a difference in the performance existed, we recommended that the system remains operating at the same high alert level even during periods when fewer cases are expected. The technology used by the method proposed to monitor the notification of cases is easy to transfer to operational staff.
Subject(s)
Animals , Cattle , Humans , Statistical Distributions , Population Surveillance , Dengue/epidemiology , Paraguay/epidemiology , Disease Outbreaks , Population Density , Disease Notification , Animal Husbandry/statistics & numerical dataABSTRACT
Introducción: en la vida civil la tendencia actual en el tratamiento de las lesiones traumáticas de colon y recto es hacia el cierre primario, pero aún no existe consenso. Objetivo: identificar características y evolución de 36 pacientes con traumatismos de colon a los que se les practicó sutura primaria. Métodos: estudio descriptivo, de cohorte retrospectiva. Se estudiaron pacientes atendidos en hospitales docentes de la provincia de La Habana, desde noviembre de 2008 hasta enero de 2012, así como los factores relacionados con la ocurrencia de complicaciones y los costos. Los datos fueron tomados de la historia clínica y del informe operatorio, en cada hospital. La información fue procesada de forma automatizada (SPSS 15.0). Se utilizó análisis de distribución de frecuencias, y el test de homogeneidad para identificar las variables relacionadas con la ocurrencia de complicaciones. Resultados: la causa más frecuente de las lesiones fue el arma blanca (86,1 por ciento). Los factores relacionados con la ocurrencia de complicaciones fueron el agente causal y la severidad de las lesiones según la escala de Flint (p= 0,02 y p= 0,04). Los costos promedio por tiempo quirúrgico y estadía resultaron ser de: $ 1091,88 y $ 1250,82. Conclusiones: las principales complicaciones por empleo de sutura primaria en los hospitales docentes de La Habana fueron: infección del sitio quirúrgico y sangramiento postoperatorio, y los factores relacionados con ellas: el agente causal y la severidad de las lesiones. El empleo de la sutura primaria es una opción terapéutica que parece razonable y menos costosa que la colostomía(AU)
Introduction: In civilian life, the current trend in the treatment of colon and rectum traumatic lesions is for the primary closure, but there is still no consensus. Objective: to identify the characteristics and outcome of 36 patients with colon trauma colonist who underwent primary suture. Methods: A descriptive study of retrospective cohort was carried out; we studied patients treated in Havana Province teaching hospitals, from November 2008 to January 2012, as well as the factors related to the occurrence of complications and costs. Data were collected from the medical records and the operative report, in each of the hospitals. The information was processed in an automated system (SPSS 15,0). Analysis of frequency distribution and homogeneity test were used to identify variables related to the occurrence of complications. Results: The most frequent cause of injury was stab (86,1 percent). The factors related to the occurrence of complications and the severity of lesions were the causative agents, as measured by the Flint scale (p= 0,02 and p= 0,04). Average costs per surgical and stay time turned out to be: $ 1091,88 and $ 1250,82. Conclusions: The main complications from the use of primary suture in teaching hospitals of Havana are: surgical site infection and postoperative bleeding, and other factors related to them: the causative agent and the severity of lesions. The use of primary suture is a therapeutic option that seems to be reasonable and less expensive than the colostomy(AU)
Subject(s)
Humans , Colon/injuries , Indicators of Morbidity and Mortality , Medical Records/statistics & numerical data , Rectum/injuries , Cohort Studies , Epidemiology, Descriptive , Retrospective Studies , Statistical Distributions , Weapons/statistics & numerical dataABSTRACT
OBJECTIVE: To determine whether pre-operative perfusion skewness and kurtosis derived from normalized cerebral blood volume (nCBV) histograms are associated with progression-free survival (PFS) of patients after partial resection of newly diagnosed glioblastoma. MATERIALS AND METHODS: A total of 135 glioblastoma patients who had undergone partial resection of tumor (resection of < 50% of pre-operative tumor volume or surgical biopsy) confirmed with immediate postsurgical MRI and examined with both conventional MRI and dynamic susceptibility contrast (DSC) perfusion MRI before the surgery were retrospectively reviewed in this study. They had been followed up post-surgical chemoradiotherapy for tumor progression. Using histogram analyses of nCBV derived from pre-operative DSC perfusion MRI, patients were sub-classified into the following four groups: positive skewness and leptokurtosis (group 1); positive skewness and platykurtosis (group 2); negative skewness and leptokurtosis (group 3); negative skewness and platykurtosis (group 4). Kaplan-Meier analysis and multivariable Cox proportional hazards regression analysis were performed to determine whether clinical and imaging covariates were associated with PFS or overall survival (OS) of these patients. RESULTS: According to the Kaplan-Meier method, median PFS of group 1, 2, 3, and 4 was 62, 51, 39, and 41 weeks, respectively, with median OS of 82, 77, 77, and 72 weeks, respectively. In multivariable analyses with Cox proportional hazards regression, pre-operative skewness/kurtosis pattern (hazard ratio: 2.98 to 4.64; p < 0.001), Karnofsky performance scale score (hazard ratio: 1.04; p = 0.003), and post-operative tumor volume (hazard ratio: 1.04; p = 0.02) were independently associated with PFS but not with OS. CONCLUSION: Higher skewness and kurtosis of nCBV histogram before surgery were associated with longer PFS in patients with newly diagnosed glioblastoma after partial tumor resection.
Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Young Adult , Brain Neoplasms/mortality , Chemoradiotherapy , Disease-Free Survival , Glioblastoma/mortality , Image Interpretation, Computer-Assisted , Image Processing, Computer-Assisted , Kaplan-Meier Estimate , Magnetic Resonance Imaging/methods , Regression Analysis , Retrospective Studies , Statistical Distributions , Tumor BurdenABSTRACT
With the ease provided by current computational programs, medical and scientific journals use bar graphs to describe continuous data. This manuscript discusses the inadequacy of bars graphs to present continuous data. Simulated data show that box plots and dot plots are more-feasible tools to describe continuous data. These plots are preferred to represent continuous variables since they effectively describe the range, shape, and variability of observations and clearly identify outliers. By contrast, bar graphs address only measures of central tendency. Bar graphs should be used only to describe qualitative data.
Subject(s)
Humans , Data Display , Data Interpretation, Statistical , Research Design , Statistical DistributionsSubject(s)
Humans , Female , Pregnancy , Infant, Newborn , Moon , Parturition , Models, Biological , Time Factors , Statistical Distributions , Regression Analysis , Retrospective Studies , Culture , Tidal Waves , Light , MexicoABSTRACT
Objetivo. Analizar los factores sociodemográficos y de las lesiones causadas por accidentes de tránsito que influyen en el tiempo de hospitalización de las víctimas. Material y métodos. Muestra transversal de 17 932 eventos de tránsito ocurridos en España entre 2000 y 2007. Se estimaron diferentes modelos de regresión para identificar y medir la influencia de los factores. Resultados. Los hombres tienen un tiempo medio de hospitalización 41% mayor al de las mujeres. La duración de la estancia hospitalaria media aumenta cinco veces cuando existen fracturas. Las lesiones en las extremidades inferiores, la cabeza y el abdomen se asocian con mayores duraciones hospitalarias. Conclusiones. El sexo de la víctima, su edad, la posición que ocupaba en el vehículo en el momento del evento, el tipo de vehículo causante y el tipo y zona de la lesión influyen significativamente en la duración de la estancia hospitalaria.
Objective. To analyze which socio-demographic and other factors related to motor injuries affect the length of hospital recovery stay. Materials and methods. In the study a sample of 17 932 motor accidents was used. All the crashes occurred in Spain between 2000 and 2007. Different regression models were fitted to data to identify and measure the impact of a set of explanatory regressors. Results. Time of hospital stay for men is on average 41% larger than for women. When the victim has a fracture as a consequence of the accident, the mean time of hospital stay is multiplied by five. Injuries located in lower extremities, the head and abdomen are associated with greater hospitalization lengths. Conclusions. Gender, age and type of victim, as well as the location and nature of injuries, are found to be factors that have significant impact on the expected length of hospital stay.
Subject(s)
Humans , Male , Female , Accidents, Traffic , Length of Stay/statistics & numerical data , Models, Theoretical , Spain , Multiple Trauma/epidemiology , Statistical Distributions , Cross-Sectional Studies , Regression Analysis , Retrospective Studies , Databases, Factual , Fractures, Bone/epidemiology , Hospitalization/statistics & numerical dataSubject(s)
Humans , Biomedical Research , Weights and Measures , Statistical Distributions , Statistics as TopicABSTRACT
Teniendo en cuenta la importancia de la bioestadística en los trabajos de investigación destinados a los profesionales de atención primaria, se describen dos de sus conceptos básicos: medidas de tendencia central y medidas de dispersión...