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1.
Arq. bras. med. vet. zootec. (Online) ; 73(4): 902-908, Jul.-Aug. 2021. tab, ilus
Article in English | ID: biblio-1285280

ABSTRACT

This study aimed to describe and validate the formation of the rings in the spine of the pectoral fin and to determine the coherence of the OTC mark with the rings of three species of Caspian Sea sturgeon, the Persian sturgeon (Acipenser persicus), the Starry sturgeon (Acipenser stellatus) and Ship sturgeon (Acipenser nudiventris). Validation was achieved by comparing the total radius of the fin spine of fish of known age after one and two years of growth with the measured radius of the first and second rings in the zone. There was no overlap between the measured radius for the first year and the increase for the second. The Ship sturgeon showed the largest width of the second ring followed by the Persian sturgeon and Stellate sturgeon. The results indicate that the highest growth parameter belongs to the juvenile Ship sturgeon. This research showed that chemically marking the fin spines of juvenile Acipenseridae leads to unbiased estimates and contributes to the knowledge of the population dynamics of these species. The study found that the combination of the dial ring of the pectoral fin spine with growth validated the age estimation in juvenile sturgeon Ship, Persian, and Starry sturgeon.(AU)


O objetivo deste estudo foi descrever e validar a formação dos anéis na espinha da nadadeira peitoral de três espécies de esturjão do mar Cáspio: o esturjão-persa (Acipenser persicus), o esturjão-estrelado (Acipenser stellatus) e o esturjão-de-navio (Acipenser nudiventris), bem como determinar a coerência da marca OTC com os anéis dessas três espécies. A validação foi alcançada comparando-se o raio total da espinha da nadadeira de peixes de idade conhecida, após um e dois anos de crescimento, com o raio medido do primeiro e segundo anéis na zona. Não houve sobreposição entre o raio medido no primeiro ano e o aumento no segundo. O esturjão-de-navio mostrou a maior largura do segundo anel, seguido pelo esturjão-persa e pelo esturjão-estrelado. Os resultados indicam que o maior parâmetro de crescimento pertence ao esturjão-de-navio juvenil. Esta pesquisa mostrou que a marcação química dos espinhos das nadadeiras de juvenis de Acipenseridae leva a estimativas imparciais e contribui para o conhecimento da dinâmica populacional dessas espécies. O estudo descobriu que a combinação do anel do mostrador da barbatana peitoral espinhal com o crescimento validou a estimativa de idade em esturjão-de-navio juvenil, esturjão-persa e esturjão-estrelado.(AU)


Subject(s)
Animals , Oxytetracycline/analysis , Fishes/growth & development , Spine/growth & development , Statistics as Topic/methods , Caspian Sea
2.
Rev. ecuat. pediatr ; 22(2): 1-10, 31 de agosto del 2021.
Article in Spanish | LILACS | ID: biblio-1284499

ABSTRACT

Introducción: Objetivo: el objetivo es estimar el peso fetal por métodos clínicos y ecográficos y compararlo con el peso al nacer en recién nacidos a término. Métodos: Se trata de un estudio epidemiológico, observacional, transversal de una cohorte de recién nacidos a término sanos. El tamaño de la muestra fue de 102 neonatos nacidos en el Hospital Pablo Arturo Suárez, en Quito, Ecuador, de noviembre de 2019 a enero de 2020. Resultados: En neonatos a término, la estimación ecográfica fue del 80.00%, mientras que en la valoración clínica fue del 72.29%. El perfil del recién nacido analizado es hombre, mestizo, ecuatoriano, nacido en la región serrana, con una edad gestacional media de 38.67 semanas y un peso medio al nacer de 3.023 gramos, en quienes se estimó el peso fetal mediante ecografía y valoración clínica. La estimación del error absoluto en ambos métodos analizados fue 2.43% para ecografía y -4.65% para valoración clínica, y ambos mostraron concordancia moderada, 78.2% para ecografía y 85.6% para valoración clínica. El análisis multivariado mostró que los recién nacidos con peso modificado por ecografía tienen 13.44 veces más probabilidades de mostrar peso alterado al nacer, mientras que los recién nacidos con peso modificado por la evaluación clínica tienen 11.95 veces más probabilidades de mostrar peso alterado al nacer. Conclusiones: La precisión en la valoración clínica fue siempre mayor que en el método ecográfico, especialmente en los recién nacidos de bajo peso


Introduction: The aim of this trial was to estimate fetal weight by clinical and ultrasound methods and to compare with the weight at birth in full-term newborns. Methods: This is an epidemiological, observational, cross-sectional study of a cohort of healthy full-term newborns. The sample size was 102 neonates born at the Pablo Arturo Suarez Hospital, in Quito, Ecuador, from November 2019 to January 2020. Results: In full-term neonates, the estimate on ultrasound was 80.00%, while in the clinical assessment was 72.29%. The profile of newborn analyzed is man, mestizo, Ecuadorian, born in the highlands region, with a mean gestational age of 38.67 weeks and a mean birth weight of 3,023 grams, in whom it estimated the fetal weight through ultrasound and clinical assessment. The estimation of the absolute error in both methods analyzed was 2.43% to ultrasound and -4.65% to clinical assessment, and both showed moderate concordance, 78.2% to ultrasound, and 85.6% to clinical assessment. Multivariate analysis showed the neo-nates with modified weight by ultrasound are 13.44 times more likely to show altered weight at birth, while neonates with modified weight by the clinical assessment are 11.95 times more likely to show altered weight at birth. Conclusions: Accuracy in the clinical assessment was always higher than in the ultrasound method, especially in low weight newborns.


Introdução: Objetivo: estimar o peso fetal por métodos clínicos e ultrassonográficos e compará-lo com o peso ao nascer em recém-nascidos a termo. Métodos: Este é um estudo epidemiológico, observacional e transversal de uma coorte de recém-nascidos saudáveis ​​a termo. O tamanho da amostra foi de 102 neonatos nascidos no Hospital Pablo Arturo Suárez, em Quito, Equador, de novembro de 2019 a janeiro de 2020. Resultados: Em neonatos a termo, a estimativa ultrassonográfica foi de 80,00%, enquanto na avaliação clínica foi de 72,29%. O perfil do recém-nascido analisado é do sexo masculino, mestiço, equatoriano, nascido na região montanhosa, com idade gestacional média de 38,67 semanas e peso médio ao nascer de 3,023 gramas, sendo o peso fetal estimado por ultrassonografia e avaliação clínica. A estimativa do erro absoluto em ambos os métodos analisados ​​foi de 2,43% para ultrassom e -4,65% para avaliação clínica, e ambos apresentaram concordância moderada, 78,2% para ultrassom e 85,6% para avaliação clínica. A análise multivariada mostrou que os recém-nascidos com peso modificado ultrassonográfico têm 13,44 vezes mais chance de apresentar peso alterado ao nascer, enquanto os recém-nascidos com peso modificado pela avaliação clínica têm 11,95 vezes mais chance de apresentar peso alterado ao nascer. Conclusões: A precisão na avaliação clínica sempre foi maior do que no método ultrassonográfico, principalmente em recém-nascidos de baixo peso.


Subject(s)
Humans , Infant, Newborn , Birth Weight , Ultrasonography, Prenatal , Fetal Weight , Infant, Newborn , Statistics as Topic
3.
Neumol. pediátr. (En línea) ; 16(2): 57-61, 2021. ilus
Article in Spanish | LILACS | ID: biblio-1293284

ABSTRACT

Una de las etapas fundamentales en el desarrollo de un protocolo de investigación es la construcción de la base de datos. Su diseño detallado y el llenado cuidadoso ayudan a mejorar la confiabilidad de los resultados obtenidos a partir del análisis estadístico de los datos ingresados. Justamente, uno de los problemas que frecuentemente deben enfrentar los profesionales de la salud, es la construcción y la digitación de los datos. Procesos que, de no ser realizados adecuadamente, pueden generar diferentes tipos de errores. Aunque existen softwares específicos para el armando de las bases de datos, no es frecuente que los profesionales de la salud sepan utilizarlos. Es por lo anterior que el objetivo de este apartado es describir algunos aspectos básicos del uso de la planilla de cálculo de Excel para que pueda ser utilizada como base de datos.


One of the fundamental stages in the development of a research protocol is the construction of the database. Its detailed design and careful filling help improve the reliability of the results obtained from the data's statistical analysis. One of the problems that health professionals must frequently face is the construction and entry of data. Processes that, if not carried out properly, can generate different types of errors. Although there is a specific software for building databases, health professionals do not know how to use them. Because of the above, the objective of this section is to describe some essential aspects of the use of the Excel spreadsheet so that it can be used as a database.


Subject(s)
Software , Statistics as Topic , Databases as Topic
5.
Int. j. morphol ; 38(5): 1317-1324, oct. 2020. tab
Article in English | LILACS | ID: biblio-1134442

ABSTRACT

SUMMARY: Statistical testing methods are essential tools to measure and analyze the data obtained through research in dental morphology. This descriptive study analyzes the different statistical testing methods in order to suggest its appropriate use and manage in the interpretation and analysis of quantitative and/or qualitative data of dentistry investigations. The knowledge obtained through this study could orient students and/or interested professionals to decide, with theoretical basis, which one to use in the development of their research.


RESUMEN: Los métodos de pruebas estadísticas son herramientas esenciales para medir y analizar los datos obtenidos a través de la investigación en morfología dental. Este estudio descriptivo analiza los diferentes métodos de pruebas estadísticas con el fin de sugerir su uso apropiado y gestionarlo en la interpretación y análisis de datos cuantitativos y / o cualitativos de las investigaciones odontológicas. El conocimiento obtenido a través de este estudio podría orientar a los estudiantes y / o profesionales interesados a decidir, con base teórica, cuál utilizar en el desarrollo de su investigación.


Subject(s)
Humans , Tooth/anatomy & histology , Data Interpretation, Statistical , Cross-Sectional Studies , Statistics as Topic , Dentistry , Data Analysis
7.
Salud bienestar colect ; 4(3): 94-107, sept.-dic. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1282066

ABSTRACT

INTRODUCCIÓN: las actividades asistenciales relacionadas con la atención de pacientes en servicios clínicos tienen diferentes grados de riesgos para las personas que los reciben, el error en la atención sanitaria se denomina evento adverso y/o centinelas los que, según su gravedad, pueden llegar a causar la muerte de los usuarios. OBJETIVO: determinar los costos totales de úlceras por presión y caídas ocurridos en los usuarios de los servicios clínicos de cirugía y medicina en un establecimiento de alta complejidad durante el primer semestre del 2017 y primer semestre del 2018, en Chile. MÉTODO: estudio descriptivo retrospectivo. La ocurrencia de eventos relacionados a úlceras por presión y caídas son notificados a través del sistema informático Phoenix y son recepcionados por el Departamento de Calidad y Seguridad del Paciente del establecimiento, los datos económicos fueron proporcionados por el departamento de Finanzas. Los datos fueron procesados por programa computacional Excel. RESULTADOS: los costos totales asociado a úlceras por presión y caídas:Servicio de Cirugía, primer semestre del 2017:-Ulceras por presión $44.086.872 (U$ 57.557 dólares)-Caídas $39.630.517 (U$51.739 dólares)-Costo total $ 83.717.389 (U$109.297 dólares)Servicio de Medicina, primer semestre del 2017:-Úlceras por presión $22.654.894 (U$29.803 dólares)-Caídas $32.023.185 (U$41.807 dólares)-Costo total $ 54.678.079 (U$71.385 dólares)Servicio de Cirugía, primer semestre del 2018:-Ulceras por presión $76.979.440 (U$100.500 dólares)-Caídas $18.522.927 (U$24.182 dólares)-Costo total $ 95.502.367 (U$124.683 dólares)Servicio de Medicina, primer semestre del 2018:-Ulceras por presión $14.981.255 (U$19.558 dólares)-Caídas $55.258.625 (U$72.142 dólares)-Costo total $ 70.239.880 (U$91.701 dólares) CONCLUSIÓN: se logró levantar información actual sobre los recursos financieros y clínicos que determinan el impacto económico que generan los eventos adversos en los pacientes atendidos en un centro asistencial público. Es por esto, que el presente estudio, permitió cuantificar y evidenciar el impacto económico de dos eventos ocurridos en los servicios clínicos de un hospital de alta complejidad de Chile.


INTRODUCTION: healthcare activities related to the care of patients in clinical services, have different degrees of risks for the people who receive them, the error in health care is called an adverse event and / or sentinels which, depending on their severity, can arrive to cause the death of users. OBJECTIVE: to determine the total costs of pressure ulcers and falls that occurred in users of clinical services of surgery and medicine in a highly complex establishment during the first half of 2017 and the first half of 2018, in Chile. METHOD: retrospective descriptive study. The occurrence of events related to pressure ulcers and falls are notified through the Phoenix computer system and are received by the Department of Quality and Patient Safety of the establishment, the economic data were provided by the Department of Finance. The data were processed by Excel computer program. RESULTS: the total costs associated with pressure ulcers and falls:Surgery Service, first semester of 2017: -Pressure ulcers $ 44,086,872 (U$ 57,557)-Falls $ 39,630,517 (U$ 51,739) -Total cost$ 83,717,389 (U$ 109,297)Medicine Service, first semester of 2017: -Pressure ulcers $ 22,654,894 (U$29,803 dollars) -Falls $ 32,023,185 (U$41,807 dollars) -Total cost $ 54,678,079 (U$71,385 dollars)Surgery Service, first semester of 2018: -Pressure ulcers $ 76,979,440 (U$100,500 dollars) -Falls $ 18,522,927 (U$24,182 dollars) -Total cost $ 95,502,367 (U$124,683 dollars)Medicine Service, first semester of 2018: -Pressure ulcers $ 14,981,255 (U$19,558 dollars) -Falls $ 55,258,625 (U$72,142dollars) -Total cost $ 70,239,880 (U$91,701 dollars) CONCLUSIONS: it was possible to collect current information on financial and clinical resources that determine the economic impact generated by adverse events in patients treated in a public healthcare center. This is why the present study made it possible to quantify and demonstrate the economic impact of two events that occurred in the clinical services of a highly complex hospital in Chile.


Subject(s)
Humans , Database Management Systems/instrumentation , Pressure Ulcer/diagnosis , Pressure Ulcer/etiology , Research Design , Software , Chile , Retrospective Studies , Risk Factors , Statistics as Topic , Health Care Costs , Cost of Illness , Risk Assessment , Pressure Ulcer/economics , Emergency Medical Services/statistics & numerical data , Patient Safety
8.
Int. j. odontostomatol. (Print) ; 14(1): 89-94, mar. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1056506

ABSTRACT

RESUMEN: El objetivo de este estudio fue determinar el grado de concordancia entre profesionales para mediciones óseas mediante Tomografía Computarizada de Haz Cónico (CBCT). Para aquello, se realizó un estudio de Acuerdo Diagnóstico en el cual participaron 32 Cirujanos Dentistas de la Región de Los Ríos, dedicados al área de la implantología. Estos, realizaron mediciones de grosor buco-palatino, distancia mesio-distal y altura ósea en un examen de CBCT con un intervalo de 2 semanas con el fin de estimar el coeficiente de correlación intraclase (ICC). Mediante el método de BlandAltman, se realizó el análisis de las diferencias individuales para cada una de las mediciones señaladas. Finalmente, para establecer diferencias estadísticamente significativas entre las mediciones se realizó la prueba t-test para muestras pareadas, con un nivel de significancia estadística de p<0,05. El ICC para mediciones de grosor buco-palatino fue de 0,71, mientras que para las mediciones de distancia mesio-distal fue 0,79, y altura de 0,62. El ICC general para las tres mediciones fue de 0,97. No se encontraron diferencias estadísticamente significativas para las mediciones evaluadas. En conclusión, existe un alto grado de concordancia entre profesionales para mediciones óseas utilizando CBCT.


ABSTRACT: The aim of this study was to determine the degree of agreement between professionals for bone measurement analysis by Computed Beam Computed Tomography (CBCT). A diagnosis agreement study was carried out with the participation of 32 dental surgeons from the Los Ríos region, all specialists in implantology. The dental surgeons carried out measurements of bucco-palatal thickness, mesio-distal distance and height in a CBCT examination with a 2 week interval, in order to estimate intraclass correlation coefficient (ICC). Through the BlandAltman method the analysis of the individual differences for each of the indicated measurements was realized. Finally, to establish statistically significant differences between the measurements, t-test was performed for paired samples, with a statistical significance level of p <0.05. The ICC for buccopalatal thickness measurements was 0.71, while for the mesiodistal distance measurements it was 0.79, and height was 0.62. The general ICC for the three measurements was 0.97. No statistically significant differences were found in the evaluated measurements. In conclusion, there is a high level of agreement among professionals for measurements based on Cone Beam Computed Tomography (CBCT).


Subject(s)
Humans , Dental Implants , Anthropometry , Cone-Beam Computed Tomography/methods , Measurements, Methods and Theories , Chile , Statistics as Topic/methods , Clinical Laboratory Techniques , Models, Theoretical
9.
Article in English | WPRIM | ID: wpr-786210

ABSTRACT

No abstract available.


Subject(s)
Dissent and Disputes , Statistics as Topic
10.
Article in Korean | WPRIM | ID: wpr-787240

ABSTRACT

The Big Data Research Committee of the Korean Society of Gastroenterology conducted activities and researches with three goals. First, it provides the basis for proper and cost-effective treatment of digestive diseases in Korea. Second, it carries out population-level global research by establishing a system of big data analysis related to gastroenterology. Third, it provides the members of the Korean Society of Gastroenterology with the opportunity to plan and assess the public interest related to big data. The studies published by the committee members in this paper were carried out under these objectives, and the findings are believed to have achieved the public interest goals that may be helpful in the current medical and health policy. The construction of the big data infrastructure for digestive drugs is also underway, and we expect to see meaningful results pertaining to important digestive drugs. Research using public health medical big data, such as the National Health Insurance Corporation data base, should ultimately provide a basis for reflecting public messages and policies for the public. To this end, it is necessary for Korean researchers to lead efforts to lower the barriers and to approach relevant information and opportunities using big data research.


Subject(s)
Committee Membership , Gastroenterology , Health Policy , Korea , National Health Programs , Public Health , Statistics as Topic
11.
Article in Korean | WPRIM | ID: wpr-816603

ABSTRACT

BACKGROUND: The emergence of multidrug-resistant Acinetobacter baumannii as a nosocomial pathogen is one of the major public health problems. The aim of this study was to evaluate the role of an efflux pump gene adeJ for the multidrug resistance of A. baumannii clinical isolates.METHODS: Two groups (MDRAB and SAB) of A. baumannii clinical isolates were studied. The SAB group consisted of strains that did not meet the criteria of MDRAB and were susceptible to more categories of antibiotics than MDRAB. Antimicrobial susceptibility results obtained by VITEKII system were used in data analysis and bacterial group allocation. We performed real-time reverse transcription PCR to determine relative expression of adeJ. We compared relative expression of adeJ in comparison groups by considering two viewpoints: i) MDRAB and SAB groups and ii) susceptible and non-susceptible groups for each antibiotic used in this study.RESULTS: The mean value of relative expression of adeJ of MDRAB and SAB groups was 1.4 and 0.92, respectively, and showed significant difference (P=0.002). The mean values of relative expression of adeJ of susceptible and non-susceptible groups to the antibiotics cefepime, ceftazidime, ciprofloxacin, imipenem, meropenem, tigecycline, piperacillin/tazobactam, ticarcillin/clavulanic acid, trimethoprim/sulfamethoxazole, piperacillin, and gentamicin showed statistically significant differences.CONCLUSION: The overexpression of adeIJK might contribute to the multi-drug resistance in A. baumannii clinical isolates. Further, the overexpression of adeIJK might be one of the factors contributing to the resistance to numerous antibiotics.


Subject(s)
Acinetobacter baumannii , Acinetobacter , Anti-Bacterial Agents , Ceftazidime , Ciprofloxacin , Drug Resistance, Multiple , Gentamicins , Imipenem , Piperacillin , Polymerase Chain Reaction , Public Health , Reverse Transcription , Statistics as Topic
12.
Article in English | LILACS | ID: biblio-1145854

ABSTRACT

Research in education is often associated with comparing group averages and linear relations in sufficiently large samples and evidence-based practice is about using the outcomes of that research in the practice of education. However, there are questions that are important for the practice of education that cannot really be addressed by comparisons of group averages and linear relations, no matter how large the samples. Besides, different types of constraints including logistic, financial, and ethical ones may make larger-sample research unfeasible or at least questionable. What has remained less known in many fields is that there are study designs and statistical methods for research involving small samples or even individuals that allow us to address questions of importance for the practice of education. This article discusses one type of such situations and provides a simple coherent statistical approach that provides point and interval estimates of differences of interest regardless of the type of the outcome variable and that is of use in other types of studies involving large samples, small samples, and single individuals.


A pesquisa em educação é frequentemente associada à comparação de médias de grupo e relações lineares em amostras suficientemente grandes, e a prática baseada em evidências trata do uso dos resultados dessa pesquisa na prática educacional. No entanto, há questões importantes para a prática da educação que não podem ser realmente abordadas por comparações de médias de grupo e relações lineares, por maiores que sejam as amostras. Além disso, diferentes tipos de restrições, incluindo as logísticas, financeiras e éticas, podem tornar a pesquisa com amostras maiores inviável ou, pelo menos, questionável. O que tem ficado menos conhecido em muitos campos é que existem desenhos de estudos e métodos estatísticos para pesquisas envolvendo pequenas amostras ou mesmo indivíduos que nos permitem abordar questões de importância para a prática da educação. Este artigo discute um tipo de tais situações e fornece uma abordagem estatística coerente simples que fornece estimativas de ponto e intervalo de diferenças de interesse, independentemente do tipo de variável de resultado e que é útil em outros tipos de estudos envolvendo grandes amostras, pequenas amostras, e indivíduos solteiros.


Subject(s)
Statistics as Topic/methods , Bayes Theorem , Education, Medical/statistics & numerical data
13.
Rev. inf. cient ; 99(6): 538-547, 2020. ilus
Article in Spanish | LILACS | ID: biblio-1148226

ABSTRACT

Introducción: Varios modelos han intentado pronosticar y evaluar el estado actual de la pandemia que ha generado el coronavirus SARVS-CoV2, siendo la evaluación la base fundamental para la toma de decisiones. Por ello, la importancia de identificar el estado de la COVID-19 en un lapso seleccionado es un proceso de gestión de información muy importante, el cual puede realizarse a través de métodos estadísticos y matemáticos con el fin de tomar decisiones para controlar la epidemia. Objetivo: Proponer un método estadístico matemático para identificar el estado de la COVID-19 con relación al pico epidémico en lapsos escogidos. Método: Se utilizaron métodos teóricos entre los que destacan el análisis, la síntesis y la abstracción, y otros de carácter puramente matemáticos. Resultados: Como resultado de la aplicación práctica del método se generan gráficos que ofrecen información válida y confiable para un eficaz proceso de toma de decisiones. Conclusiones: Esta propuesta muestra robustez teórica y eficacia práctica que, aunque se elabora teniendo en cuenta los datos de Cuba, es extrapolable a cualquier otro país, e incluso a provincias y municipios(AU)


Introduction: Several models have tried to predict and evaluate the current status of the pandemic that the new coronavirus, labeled SARVS-CoV2, has caused. This evaluation would be the basis for decision making. Therefore, the importance of monitoring the COVID-19 status in a selected period of time is very important for the process of information management, which can be done through statistical and mathematical methods in order to make big decisions to control the epidemic. Objective: To propose a mathematical and statistical method to monitor COVID-19 status in contrast to the peak of the epidemic in a selected period of time. Method: Several theoretical methods were used, specially: analysis, synthesis, abstract; and other purely mathematical methods. Results: As a result of the practical application of the methods used, valid and reliable information was generated in charts, supporting an effective process of decision making. Conclusions: This proposal shows the robustness of its theoretical aspects and a practical effectiveness that, even if elaborated to submit Cuban-generated national data, it could be used in other countries, and even in a provincial or municipal level(AU)


Subject(s)
Humans , Statistics as Topic , Coronavirus Infections , Use of Scientific Information for Health Decision Making , Data Analysis
14.
Clin. biomed. res ; 40(4): 247-253, 2020. ilus
Article in Portuguese | LILACS | ID: biblio-1252890

ABSTRACT

Nas próximas edições da seção de Bioestatística da revistaClinical & Biomedical Researchuma nova série de artigos será publicada abordando um assunto de grande importância ao planejar uma pesquisa: o tamanho de amostra mínimo necessário para atingir os objetivos do estudo. Nessa série será apresentado como calcular o tamanho de uma amostra usando a ferramenta PSSHealth(Power and Sample Size for Health Researchers), construído em linguagem R por meio do pacote Shiny, para diferentes tipos e objetivos de estudo, direcionado à pesquisadores da área da saúde, utilizando termos e conceitos comumente utilizados nesta área. Além disso, o pacote fornece uma sugestão de texto com as informações consideradas no cálculo, e como devem ser descritas, com a finalidade de minimizar problemas de interpretação por parte dos pesquisadores. Neste primeiro artigo será apresentada essa ferramenta desenvolvida pela Unidade de Bioestatística do Grupo de Pesquisa e Pós-Graduação do Hospital de Clínicas de Porto Alegre, que permite calcular não apenas o tamanho de amostra, mas também o poder de um teste de hipóteses. (AU)


In the next issues ofClinical and Biomedical Research, the Biostatistics section will introduce a new series of articles addressing a very important subject for research planning: the minimum sample size to achieve the aim of a study. This series will show how to calculate sample size using PSS Health (Power and Sample Size for Health Researchers). This tool was built using R language through the Shiny package. It can be used for different types of study and is designed for health researchers by using terms and concepts commonly used in this area. PSS Health also suggests a text with information considered in the calculation to minimize problems of interpretation by the researchers. In this first article, a general overview of PSS Health will be presented. This tool, which was developed by the Research and Graduate Group Biostatistics Unit of the Hospital de Clínicas de Porto Alegre, is useful not only to calculate sample size but also to determine power of a hypothesis test. (AU)


Subject(s)
Software , Sample Size , Statistics as Topic/instrumentation
15.
Medicina (B.Aires) ; 79(6): 445-452, dic. 2019. ilus, graf, tab
Article in Spanish | LILACS | ID: biblio-1056752

ABSTRACT

La introducció;n de análisis estadísticos en revistas biomó;©dicas debe atribuirse a Dunn y a Greewood en la dó;©cada del 30, quienes reflejan los conceptos del análisis e interpretació;n estadística. El objetivo del trabajo fue analizar la utilizació;n de distintas pruebas estadísticas y el grado de accesibilidad análisis-dependiente y artículo-dependiente de los artículos originales publicados en la revista Medicina (B Aires) en el período 2008-2017. Se realizó; un estudio bibliomó;©trico, descriptivo, observacional, de corte transversal, en el cual se incluyeron los artículos originales que fueron evaluados de acuerdo a la escala propuesta por Mora Ripoll y col. Se revisaron 301 artículos en idioma espaó;±ol, el 96% presentó; análisis estadísticos. Entre los 215 artículos que emplearon alguna tó;©cnica de estadística inferencial, el 49.7% utilizó; la prueba chi-cuadrado, pruebas z para proporciones, el test exacto de Fisher o prueba de McNemar. El 29.2% empleó; pruebas t de student y pruebas z, incluyendo el uso de estas tó;©cnicas o de intervalos de confianza para contrastes de conformidad de medianas, y/o homogeneidad de medianas (dos muestras), en muestras apareadas o independientes. Los resultados indican que un lector conocedor de las pruebas incluidas en el Nivel II tendrá acceso estadístico al 75% de los artículos originales publicados. Se comprobó; que no es necesario tener conocimientos avanzados de estadística para acceder a la mayoría de las publicaciones, pero sí es importante que estos contenidos sean desarrollados haciendo hincapí en el razonamiento estadístico por sobre la aplicació;n y utilizació;n de software o la elecció;n del test adecuado.


The introduction of statistical analysis in biomedical journals should be attributed to Dunn and Greenwood in the 1930s, who reflect the concepts of statistical analysis and interpretation. The aim of this study was to analyze the use of different statistical tests and the level of accessibility analysis-dependent and article-dependent of the original articles published in the journal Medicina (B Aires) in the period 2008-2017. A bibliometric, descriptive, observational, cross-sectional study was carried out, in which the original articles were evaluated according to the scale proposed by Mora Ripoll et al. From the 301 articles in Spanish reviewed, 96% presented statistical analyses. Among the 215 articles that used some inferential statistics technique, 49.7% used the chi-square test, z tests for proportions, the Fisher exact test or the McNemar test; 29.2% used student t-tests and z-tests, including the use of these techniques or the use of confidence intervals for medium-conformance contrasts, and /or median-homogeneity (two samples), in paired or independent samples. The results indicate that a reader who knows about the tests included in Level II will have statistical access to 75% of the original articles published. It was found that it is not necessary to have advanced knowledge of statistics to access most publications, but it is important that these contents are developed with emphasis on statistical reasoning over the application and use of software or the choice of the appropriate test.


Subject(s)
Humans , Periodicals as Topic/statistics & numerical data , Bibliometrics , Statistics as Topic , Access to Information , Medicine/statistics & numerical data , Argentina , Cross-Sectional Studies , Data Interpretation, Statistical , Biomedical Research/statistics & numerical data
16.
Rev. medica electron ; 41(6): 1509-1515, oct.-dic. 2019.
Article in Spanish | LILACS, CUMED | ID: biblio-1094146

ABSTRACT

RESUMEN Se presentan resultados preliminares del proyecto de investigación "Usos de la estadística en artículos originales de la Revista Médica Electrónica de Matanzas", que corresponde al programa No. 2 (Organización, eficiencia y calidad de los servicios), código 152042.La información cuantitativa del proyecto se obtuvo por conducto de la aplicación de un diseño muestral sistemático con arranque aleatorio que proporcionó datos sobre nueve variables estadísticas medidas en 170 artículos originales de revistas médicas cubanas. Se calcularon las distribuciones porcentuales de cada variable. Predominó la aplicación de los estudios descriptivos y sus correspondientes medidas estadísticas. Se evidenció la poca aplicación de las estimaciones por intervalos, denotando una insuficiencia que debe ser eliminada. Los resultados proporcionan una aproximación al estado actual de la aplicación de la estadística en la redacción de artículos científicos originales (AU).


SUMMARY The authors present preliminary results of the research project "Uses of Statistics in original papers of Cuban medical journals", corresponding to the program Nr. 2 (Organization, efficacy and quality of the services), codex 152042. The quantitative information of the project was obtained applying a systematic sampling design with randomized onset that provided data on nine statistic variables measured in 170 original papers of Cuban medical journals. Percentage distributions of each variable were calculated. The application of descriptive studies and their correspondent statistical measures predominated. It was evidenced the scarce application of interval estimations, denoting an insufficiency that has to be eliminated. The outcomes provide an approximation to the current status of the statistics application in writing original scientific papers (AU).


Subject(s)
Periodicals as Topic , Random and Systematic Sampling , Statistics as Topic , Models, Statistical , Scientific and Technical Publications , Periodical , Epidemiology, Descriptive , Retrospective Studies , Cuba , Observational Studies as Topic
17.
Neumol. pediátr. (En línea) ; 14(4): 194-199, dic. 2019. ilus
Article in Spanish | LILACS | ID: biblio-1087944

ABSTRACT

Once the collection of data from a study has been completed and the respective database is available, the researcher is often impatient to answer the research question and ventures into the final steps of the analysis. However, a key stage, prior to a more complex or sophisticated statistical analysis, is data exploration and descriptive statistics. Unfortunately, the exploratory analysis of the data is often performed without much dedication, or is simply "skipped", which can have important consequences on the results obtained and lead to the report of erroneous conclusions. On the one hand, exploration allows to detect errors in the data and, if possible, to correct them from the source of origin or take them into account to make decisions about what to do with them. On the other hand, exploration allows to know the behavior of the variables evaluated in terms of their distribution (key concept in Statistics) and possible relationships among them, which is essential for subsequent descriptive and inferential analysis. The objective of this article is to show graphic tools for the exploration of quantitative data, in order to visualize its distribution and compare groups according to categories of qualitative variables.


Una vez finalizada la recolección de datos de un estudio y contado con la respectiva base de datos, es frecuente que el investigador esté impaciente por responder a la pregunta de investigación y se aventure a realizar los pasos finales del análisis. No obstante, una etapa clave, previa a un análisis estadístico más complejo o sofisticado, es la exploración de datos y la estadística descriptiva. Lamentablemente, el análisis exploratorio de los datos muchas veces es realizado sin mucha dedicación, o simplemente es "saltado", lo que puede tener consecuencias importantes en los resultados obtenidos y conducir al reporte de conclusiones erróneas. Por un lado, la exploración permite detectar errores en los datos y, si es posible, corregirlos desde la fuente de origen o tenerlos en cuenta para tomar decisiones respecto a qué hacer con ellos. Por otra parte, la exploración permite conocer el comportamiento de las variables evaluadas en términos de su distribución (concepto clave en Estadística) y posibles relaciones entre ellas, lo cual es fundamental para los análisis descriptivo e inferencial posteriores. El objetivo de este artículo es mostrar herramientas gráficas para la exploración de datos cuantitativos, con el fin de visualizar su distribución y comparar grupos según categorías de variables cualitativas.


Subject(s)
Data Interpretation, Statistical , Scientific and Technical Publications , Data Display , Statistical Analysis , Statistics as Topic
19.
RECIIS (Online) ; 13(1): 222-228, jan.-mar. 2019.
Article in Portuguese | LILACS | ID: biblio-987729

ABSTRACT

A análise de pessoas é uma ferramenta útil na investigação comportamental e na indicação de estratégias que potencializam a eficiência de colaboradores na realização dos seus encargos. Nessa perspectiva, o presente trabalho teve como objetivo explorar o potencial de análise da ferramenta de dados Big Data a partir do People Analytics para a área da saúde. Em vista disso, foram analisados os perfis dos profissionais da área de enfermagem a fim de examinar os benefícios do dispositivo para a gestão de recursos humanos em saúde e, assim, fomentar sua implementação.


People analysis is a useful tool in behavioral research and in the indication of strategies that enhance the efficiency of the participants to carry out their tasks. In this perspective, this paper's objective is to explore the potential of analysis of the data tool Big Data from the People Analytics for the health area. Therefore, the nursing professionals profiles were analyzed to examine the benefits of the device for the management of human resources in health and then, to promote its implementation.


El análisis de personas es una herramienta útil en la investigación comportamental y en la indicación de estrategias que potencializan la eficiencia de colaboradores en la realización de sus encargos. En esa perspectiva, el presente trabajo tuvo como objetivo explorar el potencial de análisis de la herramienta de datos Big Data a partir del People Analytics para el área de la salud. Por lo tanto, fueron analizados los perfiles de los profesionales del área de enfermería para examinar los beneficios del dispositivo para la gestión de recursos humanos en salud y así fomentar su implementación.


Subject(s)
Humans , Professional Practice , Quality of Health Care , Statistics as Topic , Nursing , Workforce , Health , Health Personnel , Personnel Management
20.
Int. j. cardiovasc. sci. (Impr.) ; 32(2): 110-117, mar.-abr. 2019. tab, graf
Article in English | LILACS | ID: biblio-987748

ABSTRACT

Background: Warfarin is an oral anticoagulant involved in important interactions with foods and other drugs. Objectives: To evaluate the occurrence of adverse events reported by warfarin users and their relationship with drug interactions. Methods: This was an open cohort, prospective study conducted in an 18-month period with warfarin users attending public health clinics of the city of Ijuí, Brazil. Data were collected by means of interviews administered at patients' home every month. Patients' responses were confirmed by review of medical records when patients sought medical care. Data were analyzed by descriptive statistics. Potential drug interactions were evaluated in a database and vitamin K consumption was quantified using a validated method. Results: A total of 68 patients were followed-up; 63 completed the study and 5 died in the study period. Mean number of medications taken by the patients was 9.6 ± 4.5, and mean number of interactions involving warfarin was 2.91 ± 1.52. Most potential interactions increased the risk of bleeding, 61 of them severe interactions and 116 moderate interactions. Eighty-seven episodes of bleeding and 4 episodes of thrombosis were reported by a total of 37 and 4 patients, respectively. At the occurrence of these events, 56.5% of warfarin users were also taking omeprazole, 35.9% were taking simvastatin and 25.0% paracetamol. Most patients had a low vitamin K intake. Conclusions: A high frequency of potential interactions between warfarin and other drugs was detected, but a low intake of foods that could possibly affect the effects of warfarin was observed. Based on our results, it seems prudent to follow patients on warfarin therapy for drug-drug interactions, aiming to control adverse effects and to promote a safe and effective therapy


Subject(s)
Humans , Male , Female , Middle Aged , Warfarin/adverse effects , Community Health Services/statistics & numerical data , Drug Interactions , Anticoagulants/adverse effects , Anticoagulants/therapeutic use , Vitamin K , Omeprazole/therapeutic use , Statistical Analysis , Prospective Studies , Statistics as Topic , Treatment Outcome , Drug Monitoring , Simvastatin/therapeutic use , Drug Incompatibility , Pharmacovigilance , Acetaminophen
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