Bibliometric Analysis of Neurology Articles Published in General Medicine Journals.

Importance: A significant portion of neurology literature is published in general medicine journals. Despite this, a detailed examination of publication patterns of neurology articles in these journals has not yet been carried out. Objective: To examine the publication patterns of neurology articles in general medicine journals during a 10-year period using a bibliometric approach. Design, Setting, and Participants: This cross-sectional bibliometric analysis identified the top 5 general medicine journals using the 2017 Journal Citations Report. Four other medical subspecialties (ie, immunology, endocrinology, gastroenterology, and pulmonology) were selected for comparison of publication patterns with neurology. Using MEDLINE, the 5 journals were searched for articles published between 2009 and 2018 that were indexed with the following MeSH terms: nervous system diseases, immune system diseases, endocrine system diseases, gastrointestinal diseases, and respiratory tract diseases. Data analysis was conducted from February 2019 to December 2020. Main Outcomes and Measures: Publications were characterized by journal, specialty, and study design. These variables were used for comparison of publication numbers. Results: The general medicine journals with the 5 highest journal impact factors (JIF) were New England Journal of Medicine (NEJM; JIF 79.3), Lancet (JIF 53.3), JAMA (JIF 47.7), BMJ (JIF 23.6), and PLOS Medicine (JIF 11.7). Our bibliometric search yielded 3719 publications, of which 1098 (29.5%) were in neurology. Of these 1098 neurology publications, 317 (28.9%) were published in NEJM, 205 (18.7%) in Lancet, 284 (25.9%) in JAMA, 214 (19.5%) in BMJ, and 78 (7.1%) in PLOS Medicine. Randomized clinical trials were the most frequent neurology study type in general medicine journals (519 [47.3%]). The number of publications in each of the other specialties were as follows: immunology, 817; endocrinology, 633; gastroenterology, 353; and pulmonology, 818. Conclusions and Relevance: The results of this study provide some guidance to authors regarding where they may wish to consider submitting their neurology research. Compared with other specialties, neurology-based articles are published more frequently in general medicine journals.

The age threshold of the 8th edition AJCC classification is useful for indicating patients with aggressive papillary thyroid cancer in clinical practice.

BACKGROUND: Papillary thyroid cancer (PTC) is unique among cancers in that patient age is a consideration in staging. One of the most important modifications in the 8th Edition of the American Joint Committee on Cancer (AJCC) classification is to increase the age cut off for risk stratification in PTC from 45 to 55 years. However, whether this cut off is useful in clinical practice remains controversial. In the present study, we assessed how well this new age threshold stratifies patients with aggressive PTC. METHODS: We retrospectively analyzed the clinicopathological features and overall survival rate of patients with PTC admitted to and surgically treated at a single surgical center. The study protocol was divided into two series. In each series all patients (n = 523) were divided in 2 groups according to age cut off. In the first series (cut off 45) patients < 45 (n = 193) vs. ≥45 (n = 330) were compared, and in the second series (cut off 55) patients < 55 (n = 306) vs. ≥55 (n = 217) were compared. RESULTS: The rate of the prevalence of locally advanced disease (pT3 and pT4) was significantly higher in the patients above 55 years old than in those below 55 years old (p = 0.013). No significant differences were found for this parameter in series with cut off point 45 years old. A significantly higher risk of locally advanced disease T3 + T4 (OR = 4.87) and presence of LNM (N1) (OR = 3.78) was observed in ≥45 years old group (p = 0.021 and p < 0.0001, respectively). More expressive results were found for the patients ≥55 years old group, where the risk of locally advanced disease (T3 + T4) was higher (OR = 5.21) and LNM presence was OR = 4.76 (p < 0.001 and p < 0.0001, respectively). None of the patients below 55 years old showed distant metastasis, but 19 patients above 55 years old showed M1 (p < 0.0001). In older patients group (≥55 years old) we observed deaths related thyroid cancer in 11 individuals. CONCLUSIONS: The age cut off of 55 years old for risk stratification proposed by the 8th Edition of AJCC effectively stratifies PTC patients with a poor prognosis, indicating it is likely to be useful in clinical practice.

Las revistas científicas médicas en México / Scientific medical journals in Mexico

Resumen En este simposio se describen las principales características de seis revistas científicas mexicanas reconocidas por el Journal Citation Reports: Archives of Medical Research, Revista de Investigación Clínica-Clinical and Translational Investigation, Gaceta Médica de México, Salud Pública de México, Cirugía y Cirujanos y Salud Mental. Se hace énfasis en sus aspectos históricos y organizacionales, así como en sus logros principales ante la comunidad científica nacional e internacional.

Abstract This symposium describes the main characteristics of six Mexican scientific journals indexed in the Journal Citation Reports: Archives of Medical Research, Revista de Investigación Clínica-Clinical and Translational Investigation, Gaceta Médica de México, Salud Pública de México, Cirugía y Cirujanos and Salud Mental. Particular emphasis is given to their historical and organizational aspects, as on well as their main achievements recognized by the national and international scientific community.

La Revista Española de Medicina Nuclear e Imagen Molecular en 2020 / Revista Española de Medicina Nuclear e Imagen Molecular in 2020

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Scientific medical journals in Mexico.

This symposium describes the main characteristics of six Mexican scientific journals indexed in Journal Citation Reports: Archives of Medical Research, Revista de Investigación Clínica-Clinical and Translational Investigation, Gaceta Médica de México, Salud Pública de México, Cirugía y Cirujanos and Salud Mental. Particular emphasis is given to their historical and organizational aspects, as well as to their main achievements recognized by the national and international scientific community.En este simposio se describen las principales características de seis revistas científicas mexicanas reconocidas por el. Journal Citation Reports: Archives of Medical Research, Revista de Investigación Clínica-Clinical and Translational Investigation, Gaceta Médica de México, Salud Pública de México, Cirugía y Cirujanos y Salud Mental. Se hace énfasis en sus aspectos históricos y organizacionales, así como en sus logros principales ante la comunidad científica nacional e internacional.

Indicadores de impacto y prestigio de las revistas de ciencias de la salud indizadas en la red SciELO: estudio comparativo / Impact and prestige indicators of SciELO network health sciences journals: comparative study

OBJETIVO: La utilización de indicadores bibliométricos para medir la calidad de las revistas científicas es una práctica generalizada en todos los ámbitos de la ciencia. Las bases de datos WoS y Scopus siguen siendo las fuentes de referencia en la obtención de indicadores biblométricos. Han surgido otras como la red SciELO que ofrecen indicadores de la ciencia iberoamericana, escasamente recogida en WoS y Scopus. El objetivo de este trabajo fue analizar la asociación de los indicadores propuestos por SciELO para las revistas de ciencias de la salud, con los indicadores de impacto más utilizados y estudiar la complementariedad de los indicadores de prestigio existentes. MÉTODOS: Estudio analítico correlacional entre los indicadores ofrecidos por SciELO con los indicadores de impacto y prestigio de Journal Citation Report, Scopus y Web of Science. Se estudiaron los resultados de la anualidad 2018 al ser la más actual de la que se disponían los datos completos. Se analizó la existencia de asociación entre las variables cualitativas mediante la prueba de la chi-cuadrado, y en las variables cuantitativas se realizó el análisis de la varianza (ANOVA) utilizando como prueba post hoc el método de Tukey. Para obtener la relación entre variables cuantitativas se usó el coeficiente de correlación de Pearson y para las variables ordinales el de Spearman. El nivel de significación utilizado en todos los contrastes de hipótesis fue alfa ≤0,05. RESULTADOS: El Factor de Impacto de SciELO presentó débil correlación tanto con el del Journal Citation Report (R=0,36; p = 0,003), como con el Cite Score de Scopus (R=0,39; p = 0,001). La asociación entre los índices H de la Web of Science y de Scopus, con el índice H de SciELO fue débil en ambos casos(R=0,45; p < 0,001 y R=0,340; p = 0,003). CONCLUSIONES: Los indicadores propuestos por SciELO para las revistas de las ciencias de la salud no presentaron asociación con los de WoS o Scopus. La no relación entre el Factor de Impacto y el CiteScore con el Factor de Impacto de SciELO convierte a este último en una "metría" necesaria para valorar las revistas excluidas de la "corriente principal" y fundamentalmente las del área latinoamericana. No se ha demostrado necesidad de utilizar los indicadores de prestigio para cumplimentar a los de impacto

OBJECTIVE: The use of bibliometric indicators to measure the quality of scientific journals is a general practice in all areas of science. The WoS and Scopus databases continue to be the reference sources to obtain bibliographic indicators. Others such as SciELO network offer indicators about Ibero-American science, which are scarcely collected in WoS and Scopus. The aim of this work was to analyze the association of the indicators proposed by SciELO for health sciences journals, with the most widely used impact and indicators and to study the complementarity of the existing prestige indicators. METHODS: Analytical correlational study between SciELO indicators, with impact and prestige indicators from Journal Citation Report, Scopus and Web of Science. The results refer to 2018, the most recent and complete data available. Association between the qualitative variables was analyzed using the chi-square test, and the analysis of variance (ANOVA) was performed for the quantitative variables using the Tukey method as a post hoc test. To obtain the relationship between quantitative variables, Pearson's correlation coefficient was used and Spearman's coefficient for ordinal variables. The level of significance used in all the hypothesis tests was Alpha ≤0.05. RESULTS: The SciELO Impact Factor showed a weak correlation both, with Journal Citation Report (R=0.36; p = 0.003), and Scopus Cite Score (R=0.39; p = 0.001). The association between the H index of the Web of Science andthe H index of Scopus with the H index of SciELO was weak in both cases (R=0.45; p < 0.001 and R=0.340; p = 0.003). CONCLUSIONS: Indicators proposed by SciELO, for health journals, did not show an association with those of WoS or Scopus. The weak correlation between Impact Factor and Cite Score with SciELO Impact Factor, converts the latter into a necessary "metrics" to assess journals excluded from the "mainstream" and fundamentally those from the Latin American region. The need of using the prestige indicators to fill in the impact indicators, has not been proven in this study

Helicopter Emergency Medical Services Literature 1972-2017: Characteristics and Trends.

Since its inception in the latter part of the 20th century, the rapid expansion of helicopter emergency medical services (HEMS) has been accompanied by remarkable growth in the relevant evidence base. There are many review articles describing lessons contained within the various arenas of HEMS literature, but there is little or no characterization of the numbers and types of publications comprising the HEMS-related evidence base. This study analyzed all indexed publications mentioning HEMS (with abstract included) in the United States National Library of Medicine's PubMed collection. The aims of the analysis were to provide quantitative, qualitative, and longitudinal trend information regarding the 1972 to 2017 evidence base relevant to HEMS.

La epidemia de las revistas depredadoras / The predatory journals epidemy

La proliferación de las llamadas revistas depredadoras y su desconocimiento por parte de los investigadores son un peligro para la integridad científica. Es una necesidad y deber de los autores conocer y saber detectar este tipo de revistas para no publicar en ellas, pero también para no basar sus investigaciones en los trabajos que publican, y que no han pasado un proceso crítico de calidad apoyado en la revisión por pares. Se introduce el concepto de revista depredadora, algunos de sus elementos diferenciadores y los peligros que entrañan para la ciencia en general y los investigadores en particular

The proliferation of so-called predatory journals and their ignorance by researchers are a danger to scientific integrity. Authors need and must know them and therefore know how to detect these types of journals so as not to publish in them, but also so as not to base their research on the work they publish, which has not undergone a critical quality process supported by peer review. This text introduces the concept of a predatory journal, some of its differentiating elements and the dangers they entail for science in general and the researcher in particular