1,720,997 research outputs found
Relación entre la presencia de tiroiditis linfocítica con la gravedad y recurrencia/persistencia del carcinoma diferenciado de tiroides.
Get PDFIntroducción: Para el sistema endocrino la neoplasia más frecuente es el cáncer diferenciado de tiroides, con un claro incremento en su incidencia. Es importante encontrar asociaciones que posteriormente permitan establecer factores de riesgo y/o protectores claves en la estrategia terapéutica futura. Por lo que se investigó la relación entre la presencia de tiroiditis linfocítica con la gravedad y persistencia/recurrencia del carcinoma diferenciado de tiroides\ud
Materiales y métodos: se hizo un estudio de casos y controles de pacientes con carcinoma diferenciado de tiroides llevados a cirugía entre enero de 1997 y diciembre de 2012 en la Fundación Cardioinfantil, Bogotá, Colombia. Se evaluó la asociación entre la presencia de factores histopatológicos y la presencia de persistencia/recurrencia usando pruebas chi cuadrado y el OR. Para evaluar la presencia de asociación a nivel multivariado se utilizaron modelos de regresión binaria con enlace log log complementario. \ud
Resultados: la tiroiditis linfocítica no se asocia con la presencia de ninguna variable de severidad histopatológica. Sin embargo, la tiroiditis linfocítica se asoció con persistencia/recurrencia en presencia invasión vascular (OR 6.6 IC95% 1.4-32), invasión linfática (OR 5.4 IC95% 1.3-22.1), invasión de tejido peritiroideo (OR 1.0-12.3), vaciamiento central positivo (OR 5.1 IC 95% 1.0-2.6) y el, vaciamiento lateral positivo (OR 11.5 IC95% 1.0-12). Con un OR inclusive mayor respecto del grupo sin tiroiditis linfocítica en presencia de invasión linfática (OR 5.4 IC95% 1.3-22 vs 2.6 IC95% 1.2-5.6) y compromiso ganglionar en el vaciamiento lateral (OR 58 IC95% 7.1-476) independiente de la edad y el sexo.\ud
Conclusión: la tiroiditis linfocítica no se relaciona con marcadores de severidad histopatológica pero sí con mayor persistencia/recurrencia de la enfermedad.Introduction: Differentiated thyroid cancer is the most common malignancy and it shows a increase about incidence. It is important to find associations that subsequently link risk and protective factors with a future therapeutic strategy. Thus, we investigated the relationship between the presence of lymphocytic thyroiditis with severity and persistence / recurrence.\ud
Materials and methods: We made a case and controls study including patients with differentiated thyroid carcinoma who underwent total or partial thyroidectomy between January 1997 and December 2012 at Cardioinfantil Foundation, Bogotá, Colombia. We evaluated the association between the presence of histological factors and the presence of persistence / recurrence using chi-square tests and OR. For multivariate analysis, a binary regression models with complementary log log link. \ud
Results: Lymphocytic thyroiditis is not associated with presence of any histopathological severity factor. However, lymphocytic thyroiditis was associated with persistence / recurrence in presence of vascular invasion (OR 6.6 95% CI 1.4-32 ) , lymphatic invasion (OR 5.4 95% CI 1.3-22.1 ) , perithyroid involvement (OR 1.0-12.3 ) , positive center cervical nodal (OR 5.1 95% CI 1.0-2.6 ) and positive lateral cervical nodal (OR 11.5 95% CI 1.0-12 ). Even, lymphocytic thyroiditis had a higher risks than absent lymphocytic thyroiditis in the presence of lymphatic invasion (OR 5.4 95 % 2.6 95% CI 1.3-22 vs. 1.2-5.6) and positive lateral cervical nodal (OR 58 95% CI 7.1-476) age and sex independent.\ud
Conclusion: Lymphocytic thyroiditis is not related to severity histopathologic factors but its related with higher persistence / recurrence of disease
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe 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
Texas Labor Market Review
Get PDFMonthly newsletter documenting statistics related to employment in Texas including "data on nonagricultural job trends, the labor force, and job postings, and other relevant indicators for both the state and sub-state areas" (p. 1)
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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