1,721,034 research outputs found

    Factors associated with pinguecula in adults over 18 years old in Facatativá, Cundinamarca, during the years 2022-2023

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    Resumen Objetivo: determinar factores asociados a la pinguécula en usuarios atendidos en un consultorio de optometría de Facatativá en el año 2022-2023. Métodos: estudio de corte transversal. La población estuvo conformada por personas que asistieron a un consultorio de optometría en Facatativá-Colombia en el año 2022-2023. Los criterios de inclusión fueron Individuos mayores de 18 años e historias clínicas completas del consultorio de optometría. El tamaño de muestra fue de 201 usuarios. Resultados: Los factores asociados a Pinguecula en el modelo multivariado fueron ocupación (Operador/Administrativo) con un RP de 1.46, (Trabajadores de seguridad /administrativo) con un RP de 1.57; edad (27 to 59 years/≤ 26 years) con un RP de 2.65, (≥ 60 years/≤ 26 years) con un RP de 1.85 y ambliopía con un RP de 0.56. La prevalencia de Pinguecula fue de 49% (IC 95%: 44.4%-53.2%). Conclusión: Se considera que a mayor edad existe un mayor riesgo de Pinguecula y la presencia de Pinguecula fue mayor que otros sectores de América Latina.Magíster en EpidemiologíaMaestríaSummary Objective: To determine the factors associated with pinguecula in patients seen at an optometry clinic in Facatativá during the year 2022-2023. Methods: A cross-sectional study. The population consisted of individuals who attended an optometry clinic in Facatativá, Colombia, in 2022-2023. The inclusion criteria were individuals over 18 years old and clinical records from the optometry clinic. The sample size was 201 patients. Results: The factors associated with pinguecula in the multivariate model were occupation (operator/administrative) with a PR of 1.46, (security workers/administrative) with a PR of 1.57; age (27 to 59 years/≤ 26 years) with a PR of 2.65, (≥ 60 years/≤ 26 years) with a PR of 1.85, and amblyopia with a PR of 0.56. The prevalence of pinguecula was 49% (95% CI: 44.4%-53.2%). Conclusion: It is considered that older age is associated with a higher risk of pinguecula, and the presence of pinguecula was higher compared to other regions in Latin America

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Comparación entre el IR-GRD (Grupo relacionado por el diagnostico) en pacientes con y sin evento adverso en dos instituciones hospitalarias de Colombia, 2006

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    Objetivo: Determinar si existen diferencias entre el IR-GRD egreso-ingreso para aquellos pacientes que presentaron y quienes no presentaron un evento adverso en dos instituciones hospitalarias de Colombia, 2006. Materiales y Métodos: El tipo de estudio fue de casos y controles anidado. La población objeto fueron pacientes hospitalizados en los servicios de obstetricia, cirugía y medicina interna de dos instituciones en Bogotá entre marzo a octubre de 2006. La muestra fue de 88 casos por 335 controles. Los datos iniciales se tomaron de un estudio previo que determino la incidencia de eventos adversos en hospitales de Colombia en el 2006, en este estudio se cumplió con los mismos criterios de selección y además con aquellos pacientes que tuvieron la información suficiente para determinar el IR-GRD. Las variables de estudio fueron genero, tipo de ingreso, edad, servicio de egreso, diagnostico de ingreso, diagnostico principal, diagnostico secundario, procedimiento, peso del recién nacido, evento adverso, categorías diagnosticas mayores, IR-GRD. Resultados: Al comparar el IR-GRD al ingreso no se encontraron diferencias estadísticamente significativas (valor p0,05), en el IR-GRD al egreso y en la diferencia de puntajes entre el egreso – ingreso se encontraron diferencias estadísticamente significativas (valor p0,05). Al comparar por cada servicio solamente se encontraron diferencias en cirugía del IR-GRD tanto al egreso como en la diferencia entre el egreso-ingreso (valor p0,05) Conclusiones: Hubo mayor gravedad según el indicador IR-GRD en los pacientes que presentaron el evento adverso frente a los que no lo presentaron. / Abstract. Objective: To determine whether differences exist between the IR-GRD exit-entry (admission-discharge) for those patients who presented and who did not present an adverse event in two hospitals in Colombia, 2006. Materials and Methods: The type of study was nested case control. The target population were patients hospitalized in the obstetrics, surgery and internal medicine at two institutions in Bogotá between March and October 2006. The sample included 88 cases with 335 controls. The initial data were taken from a previous study determined the incidence of adverse events in hospitals in Colombia in 2006, this study achieved the selection criteria and also with patients who had sufficient information to determine the IR- GRD. The study variables were gender, type of admission, age, service discharge, admission diagnosis, principal diagnosis, secondary diagnosis, procedures, birth weight, adverse events, major diagnostic categories, IR-GRD Results: When comparing the IR-DRG admission differences were not statistically significant (p value 0.05), IR-DRG at discharge and the difference in scores between the discharge - admission differences were statistically significant (value p 0.05). Comparing each service is only differences in IR-DRG surgery both at discharge and in difference between the exit-entry (p value0,05) Conclusions: There were more serious as the IR-DRG indicator in patients with adverse event respect to those who did not present.Maestrí

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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