State of open science in cancer research.

PURPOSE: This study has been focused on assessing the Open Science scenario of cancer research during the period 2011-2021, in terms of the derived scientific publications and raw data dissemination. METHODS: A cancer search equation was executed in the Science Citation Index-Expanded, collecting the papers signed by at least one Spanish institution. The same search strategy was performed in the Data Citation Index to describe dataset diffusion. RESULTS: 50,822 papers were recovered, 71% of which belong to first and second quartile journals. 59% of the articles were published in Open Access (OA) journals. The Open Access model and international collaboration positively conditioned the number of citations received. Among the most productive journals stood out Plos One, Cancers, and Clinical and Translational Oncology. 2693 genomics, proteomics and metabolomics datasets were retrieved, being Gene Expression Omnibus the favoured repository. CONCLUSIONS: There has been an increase in oncology publications in Open Access. Most were published in first quartile journals and received higher citations than non-Open Access articles, as well as when oncological investigation was performed between international research teams, being relevant in the context of Open Science. Genetic repositories have been the preferred for sharing oncology datasets. Further investigation of research and data sharing in oncology is needed, supported by stronger Open Science policies, to achieve better data sharing practices among three scientific main pillars: researchers, publishers, and scientific organizations.

Financed research from Government Delegation grants for the National Plan on Drugs: Research assessment and scientific impact. / Repercusión científica de las ayudas de la Delegación del Gobierno para el Plan Nacional sobre Drogas: Publicaciones derivadas e impacto científico.

Addictive disorders are a serious health problem to which large amounts of research resources are devoted. This study aims to analyze the evolution and scientific impact of the publications derived from the funding of research projects by the Spanish National Plan on Drugs (PNSD). The list of grants awarded was provided by the PNSD. Derived publications were obtained by asking the principal investigators of the grants and searching in the Web of Science and Scopus. Bibliometric indicators and evolutive trends of scientific production per project were calculated. On average, the PNSD conferred 15 annual grants to research projects, with an annual amount close to one million euros (€944,200.64) and an average amount per grant of just over €60,000, being higher in basic research and in alcohol. 71,9% of the grants had derived publications and almost half of them produced between one and three publications, with basic research being the most prolific. The international journal in which most articles were published was Psychopharmacology (50) and among Spanish journals, Adicciones stood out (28). A high level of co-authorship and international collaboration was identified. Most of the PNSD-funded projects produced research articles, many of them in journals belonging to the first and second quartiles of the Journal Citation Reports. The results of this study have revealed the scientific impact of the PNSD research projects funding and may contribute to determining future funding priorities.

Los trastornos adictivos son un grave problema de salud al que se destinan gran cantidad de recursos de investigación. El propósito de este trabajo es analizar la evolución e impacto científico de las publicaciones derivadas de las ayudas a proyectos de investigación financiados por el Plan Nacional Sobre Drogas (PNSD). La relación de ayudas concedidas fue proporcionada por el PNSD. Las publicaciones derivadas se obtuvieron preguntando a los investigadores principales de las ayudas y buscando en Web of Science y Scopus. Se calcularon indicadores bibliométricos y tendencias evolutivas de la producción científica por proyecto. Por término medio, el PNSD concedió 15 ayudas anuales a proyectos de investigación, con un importe anual cercano al millón de euros (944.200,64€) y un importe medio por ayuda de algo más de 60.000€, siendo mayor en la investigación básica y en alcohol. El 71,9% de las ayudas tuvieron publicaciones derivadas y casi la mitad produjeron entre una y tres publicaciones, siendo la investigación básica la más prolífica. La revista extranjera en la que más artículos se publicaron fue Psychopharmacology (50) y entre las españolas destacó Adicciones (28). Se identificó un alto índice de coautoría y de colaboración internacional. La mayoría de los proyectos financiados por el PNSD produjeron artículos de investigación y muchos de ellos en revistas del primer y segundo cuartil del Journal Citation Reports. Los resultados de este estudio han permitido conocer la repercusión científica de las ayudas a proyectos de investigación del PNSD y puede contribuir a determinar futuras prioridades de financiación.

Repercusión científica de las ayudas de la Delegación del Gobierno para el Plan Nacional sobre Drogas: Publicaciones derivadas e impacto científico / Financed research from Government Delegation grants for the National Plan on Drugs: Research assessment and scientific impact

Los trastornos adictivos son un grave problema de salud al que se destinan gran cantidad de recursos de investigación. El propósito de este trabajo es analizar la evolución e impacto científico de las publicaciones derivadas de las ayudas a proyectos de investigación financiados por el Plan Nacional Sobre Drogas (PNSD). La relación de ayudas concedidas fue proporcionada por el PNSD. Las publicaciones derivadas se obtuvieron preguntando a los investigadores principales de las ayudas y buscando en Web of Science y Scopus. Se calcularon indicadores bibliométricos y tendencias evolutivas de la producción científica por proyecto. Por término medio, el PNSD concedió 15 ayudas anuales a proyectos de investigación, con un importe anual cercano al millón de euros (944.200,64€) y un importe medio por ayuda de algo más de 60.000€, siendo mayor en la investigación básica y en alcohol. El 71,9% de las ayudas tuvieron publicaciones derivadas y casi la mitad produjeron entre una y tres publicaciones, siendo la investigación básica la más prolífica. La revista extranjera en la que más artículos se publicaron fue Psychopharmacology (50) y entre las españolas destacó Adicciones (28). Se identificó un alto índice de coautoría y de colaboración internacional. La mayoría de los proyectos financiados por el PNSD produjeron artículos de investigación y muchos de ellos en revistas del primer y segundo cuartil del Journal Citation Reports. Los resultados de este estudio han permitido conocer la repercusión científica de las ayudas a proyectos de investigación del PNSD y puede contribuir a determinar futuras prioridades de financiación. (AU)

Addictive disorders are a serious health problem to which large amounts of research resources are devoted. This study aims to analyze the evolution and scientific impact of the publications derived from the funding of research projects by the Spanish National Plan on Drugs (PNSD). The list of grants awarded was provided by the PNSD. Derived publications were obtained by asking the principal investigators of the grants and searching in the Web of Science and Scopus. Bibliometric indicators and evolutive trends of scientific production per project were calculated. On average, the PNSD conferred 15 annual grants to research projects, with an annual amount close to one million euros (€944,200.64) and an average amount per grant of just over €60,000, being higher in basic research and in alcohol. 71,9% of the grants had derived publications and almost half of them produced between one and three publications, with basic research being the most prolific. The international journal in which most articles were published was Psychopharmacology (50) and among Spanish journals, Adicciones stood out (28). A high level of co-authorship and international collaboration was identified. Most of the PNSD-funded projects produced research articles, many of them in journals belonging to the first and second quartiles of the Journal Citation Reports. The results of this study have revealed the scientific impact of the PNSD research projects funding and may contribute to determining future funding priorities. (AU)

Global Trends in Scientific Research on Pediatric Obesity.

(1) Introduction: The aim of this study was to analyze scientific production, collaboration among countries, and research topics focusing on pediatric obesity. (2) Methods: The papers that were included in the study were retrieved from the Web of Science Core Collection from Clarivate Analytics. A bibliometric analysis of several focuses, including journals of publication, subject categories, most frequent author keywords, and journal impact factors, was conducted. Social network analysis was used to recognize collaboration groups between countries and the co-occurrences of author keywords. (3) Results: A total of 12,171 research articles were published in 2036 journals classified under a variety of subject areas, with pediatrics (27.7%), nutrition and dietetics (18.5%), and public environmental and occupational health (18.4%) accounting for the most frequent study areas, and Pediatric Obesity (309), the International Journal of Obesity (299), and BMC Public Health being the most productive journals. The main challenges identified for pediatric obesity include general topics such as physical activity, nutrition, diet, and prevention as well as other more specific challenges such as metabolic syndrome, insulin resistance, eating behavior, and cardiovascular diseases. (4) Conclusions: We observed a growth rate in the number of published articles of 59.8%, which serves as evidence of the importance of the topic. The number of funded papers also doubled from 2010 to 2019. There has been significant global collaboration on the topic, with countries across five continents being involved. The results of the thematic analysis reveal the importance of exercise and nutrition-related topics along with specialized health terms and terms related to public health.

The impact of Ibero-American science on global bioethical thinking.

The bioethics research conducted in Ibero-American countries has been very much restricted to its own realm. The aim of this study was to perform a bibliometric evaluation of bioethics papers by authors affiliated with Ibero-American institutions, and to determine how their work influences global bioethics literature. We performed a literature search in the Web of Science Core Collection (WoS CC) and Scopus. We identified a total of 5,975 documents, of which 84.3% were articles, 11.6% reviews and 4.1% book chapters. The median number of citations per paper was higher in English-language journals. Only 10 articles published between 2010 and 2019 in peer-reviewed bioethics journals and produced exclusively by authors from Ibero-American institutions garnered more than 15 citations. Our study suggests that if researchers from Ibero-American institutions want to influence global bioethical thinking, they must make the required leap in quality to be able to publish in high-quality bioethics and mainstream journals.

Global scientific production regarding behavioral addictions: An analysis of the literature from 1995 to 2019.

AIMS: The increase in scientific interest in so-called behavioral addictions has been growing in recent years. For this reason, the aim of our study is to use bibliometric techniques to identify where and with what intensity these behaviors are being studied. METHODS: In October 2020, we conducted a search in the Web of Science Core Collection using a search equation designed to retrieve the articles that combine the general keywords of addiction with specific terms of the 7 groups of behavioral addictions analyzed (gambling; gaming; information and communication related disorders; and the so-called somatic addictions related to sex, shopping, food and sports). Articles published from 1995 to 2019 were included. RESULTS: We found 9199 distinct articles. Gambling was the most studied addiction, but Information and Technology Communication-related disorders (ITC) had the highest growth rate over the span of five five-year periods, followed by gaming and food addiction. In general, there was a growth rate of 130.46% in the research on behavioral addiction issues. By geographical region, the United States was the most productive country regarding all addictions, but Oceania had the highest proportion of publications per million population. There was a clear interest among Asian countries in studying problems related to ITC and gaming problems. CONCLUSIONS: The importance of the seven behavioral addictions analyzed according to their growth rate in scientific research fields over the last 25 years was confirmed in our study. In addition, the differences in interest by geographical region show us that it is important to delve deeper into cultural particularities to better understand this phenomenon.

Mapping the scientific research on radiology departments: Global trends in publication, collaboration and trending topics.

PURPOSE: To characterize the global research trend in radiology departments based on bibliometric indicators. MATERIAL AND METHOD: As a source of information, Science Citation Index Expanded and Journal Citation Reports from Web of Science Core Collection (WoSCC) were used. Annual trends, journals of publication, subject categories of journals, collaboration indexes between authors and institutions, network of cowords and most cited papers were identified and analysed. The period of study was 2009-2018. RESULTS: 283,587 downloaded papers were analysed. The number of articles was increasing, as well as the percentage of funded works. Papers were published in 7314 different journals, being the most productive Plos One (5077), followed by American Journal of Roentgenology (4602) and European Radiology (3644). Most productive subject categories of journals were Radiology, Nuclear Medicine & Medical Imaging (86,568 papers), Clinical Neurology (29,722) and Surgery (23,564). International collaboration has increased more than 5 points, from 15.2% in 2009 to 20.7% in 2018. CONCLUSIONS: Most cited articles were published in high impact journals outside the scope of diagnostic imaging. Most influential topics included technical innovations within imaging modalities. MRI replaced conventional radiography and CT as the imaging technique of choice in imaging research.

The most 100 cited papers in addiction research on cannabis, heroin, cocaine and psychostimulants. A bibliometric cross-sectional analysis.

The number of citations a peer-reviewed article receives is often used as a measure of its importance and scientific impact. This paper identifies, describes and categorizes the highly cited papers in addiction research on cannabis, heroin, cocaine and psychostimulants. Highly cited papers were identified in the Web of Science Core Collection database. Several bibliometric indicators were calculated. Social network analysis was applied to draw groups of authors and institutions with the greatest number of collaborations and co-words. The number of citations for the top 100 cited articles ranged from 649 to 4,672. The articles were published in 40 journals. The subject category Substance Abuse included 10 papers. The United States was the most productive country (79 papers), followed by the United Kingdom (9). The main funding institutions were the National Institutes of Health in the United States. The network of collaboration between authors distributes the 352 researchers into 53 groups. The three most cited works address the neural basis of drug craving as an incentive-sensitization theory of addiction, the clinical and research uses of the Addiction Severity Index, and the neurocircuitry of addiction. Scientific literature on addictions is widely dispersed both in multidisciplinary and specific journals of neurology, psychiatry and addictions, with relatively few publications providing most of the citations. An ongoing challenge for this field is the concentration of highly cited papers coming from a select number of countries, with the United States being the research hub of the world, with the highest volume of publications and total citations.

Worldwide research output trends on drinking and driving from 1956 to 2015.

This study seeks to analyze worldwide research activity on drinking and driving of macro-actors (countries and research fields) and meso-actors (institutions, journals, articles, co-substance(s) studied) during the last 6 decades (between 1956 and 2015). Web of Science and Elsevier Scopus were searched using terms referred to drinking and driving, including terms related to vehicles and way spaces. Overlapping was excluded and absence of false positives was confirmed. Articles on alcohol with/without other psychoactive substances were assessed quantitatively (bibliometric measures). Well identified by All Science Journal Classification system (ASJC) (Elsevier Scopus), an increase in the number of articles through the 6 decades analyzed was observed, from 152 (1956-1965) to 2302 (2006-2015), which represent an average decadal growth rate (ADGR) of 72.21. Among 89 countries, United States of America published 37.62 % out of all the included articles. Nevertheless, institutions from Canada, European Union and Australia published 50 articles or more during 60 years. The publications were mostly welcomed by journals on substance abuse research, and an exponential increase in publications on combined use of alcohol and other driving-impairing substances was observed since the second half of the eighties. This is the first study that attempted an analysis of scientific production of macro- and meso-actors on a topic belonging to an intricate research area. Bibliometric analyses should be considered as an important tool for updating the evidence on the serious problem of driving under the influence (DUI). The awareness of policy makers and the other relevant actors involved in the control of DUI of alcohol and other substances is stressed.

Trends in scientific research in Insights into Imaging: a bibliometric review.

OBJECTIVES: To analyse the coverage and main bibliometric indicators of Insights into Imaging in Scopus and the Emerging Sources Citation Index (ESCI) from the Web of Science Core Collection database. METHODS: The evolution of journal production in the Scopus database was analysed according to document types, collaboration indexes between authors and institutions, and citation indicators (number of citations, SCImago Journal Rank, quartile, h-index, and most cited works). Networks of collaboration among authors, institutions, and countries were also analysed, as well as those of co-word networks. As a complementary source of information, the Emerging Source Citation Index from the Web of Science database was also considered. RESULTS: Four hundred seventy-four papers were included in Scopus and 292 in ESCI. The index of collaboration was 5.18 for authors and 2.74 for institutions. International collaboration occurred in 24.7% of the papers. The number of citations received in Scopus (4295) exceeds the number of citations received in ESCI (1177). The average number of citations per paper was 9.06 in Scopus versus 4.03 in ESCI. The h-index was 29 in Scopus and 16 in ESCI. Several collaborative groups were identified at the national and international level. CONCLUSIONS: There is a progression of Insights into Imaging in the ranking of journals in the area that, if maintained, will allow it to remain in the first quartile in the Scopus database. The main topics of interest were technologies such as 'Magnetic resonance imaging', 'Computed tomography', 'Radiology', and 'Ultrasonography' and diseases such as 'Breast cancer' and those related to 'Paediatrics'.

Bibliometric and academic network analysis of Spanish theses on drug dependence in the TESEO database. / Análisis de redes sociales y bibliométrico de las tesis españolas sobre drogodependencias en la base de datos TESEO.

The present study aims to reveal the structure of positions in the field of addiction through the analysis of doctoral theses read in Spain. The source consulted for the selection of the theses was TESEO. Searching for the keywords drug abuse, alcoholism, drug effects and drug addiction treatment during the period 1976-2017 produced 728 theses. The most productive period is 2013-2017, with 208 (28.6%) doctoral theses. The overall rate of publication is increasing, but in the period 2003-2007 output decreased significantly to 5.2% of the total. The university contributing the most theses is the University of Valencia. The academic who has supervised the most theses is Alfonso Velasco Martín, and Emilio Ambrosio Flores is the researcher who has participated most on examining committees. The analysis of the participants in the doctoral thesis process shows a gradual increase of women in authorship, in thesis supervision and as examiners. In terms of subject, the most frequently treated aspects are those related to psychology, pharmacology and medical sciences.The analysis of doctoral theses on substance abuse provides an overview of the structure and the most influential participants in this area. Increasing public concern and the creation of specific groups and research units are reflected in the growth of scientific output.

El presente trabajo tiene por objeto desvelar la estructura de posiciones del campo de las adicciones a partir del análisis de las tesis doctorales defendidas en España. La fuente consultada para la selección de las tesis fue TESEO. La búsqueda se limitó al período 1976-2017 y se utilizaron los descriptores abuso de drogas, alcoholismo, efecto de las drogas y tratamiento de la drogadicción. Se obtuvieron 728 tesis, siendo el quinquenio más productivo el 2013-2017 con 208 (28,6%) tesis doctorales. La evolución de las publicaciones es ascendente, excepto en el quinquenio 2003-2007 en el que la producción baja a un 5,2% del total. La universidad que aporta más tesis es la Universitat de València. El académico que más tesis ha dirigido es Alfonso Velasco Martín y Emilio Ambrosio Flores es el investigador que más ha participado en los tribunales. El análisis de los actores participantes en las tesis doctorales muestra un incremento de presencia de las mujeres como autoras, directoras de tesis y miembros de tribunales. En relación a la temática, los temas más abordados han sido los relacionados con la psicología, la farmacología y las ciencias médicas.El análisis de las tesis doctorales sobre drogodependencias ha dado una visión de su estructura y de las personas más influyentes de la misma. El aumento de la preocupación social en esta área y la creación de grupos y unidades de investigación específicos ha ocasionado un incremento de la producción científica.

Análisis de redes sociales y bibliométrico de las tesis españolassobre drogodependencias en la base de datos TESEO / Bibliometric and academic network analysis of Spanishtheses on drug dependence in the TESEO database

El presente trabajo tiene por objeto desvelar la estructura de posiciones del campo de las adicciones a partir del análisis de las tesis doctorales defendidas en España. La fuente consultada para la selección de las tesis fue TESEO. La búsqueda se limitó al período 1976-2017 se utilizaron los descriptores abuso de drogas, alcoholismo, efecto de las drogas y tratamiento de la drogadicción. Se obtuvieron 728 tesis, siendo el quinquenio más productivo el 2013-2017 con 208 (28,6%) tesis doctorales. La evolución de las publicaciones es ascendente, excepto en el quinquenio 2003-2007 en el que la producción baja a un 5,2% del total. La universidad que aporta más tesis es la Universitat de València. El académico que más tesis ha dirigido es Alfonso Velasco Martín y Emilio Ambrosio Flores es el investigador que más ha participado en los tribunales. El análisis de los actores participantes en las tesis doctorales muestra un incremento de presencia de las mujeres como autoras, directoras de tesis y miembros de tribunales. En relación a la temática, los temas más abordados han sido los relacionados con la psicología, la farmacología y las ciencias médicas.El análisis de las tesis doctorales sobre drogodependencias ha dado una visión de su estructura y de las personas más influyentes de la misma. El aumento de la preocupación social en esta área y la creación de grupos y unidades de investigación específicos ha ocasionado un incremento de la producción científica

The present study aims to reveal the structure of positions in the field of addiction through the analysis of doctoral theses read in Spain. The source consulted for the selection of the theses was TESEO. Searching for the keywords drug abuse, alcoholism, drug effects and drug addiction treatment during the period 1976-2017 produced 728 theses. The most productive period is 2013-2017, with 208 (28.6%) doctoral theses. The overall rate of publication is increasing, but in the period 2003-2007 output decreased significantly to 5.2% of the total. The university contributing the most theses is the University of Valencia. The academic who has supervised the most theses is Alfonso Velasco Martín, and Emilio Ambrosio Flores is the researcher who has participated most on examining committees. The analysis of the participants in the doctoral thesis process shows a gradual increase of women in authorship, in thesis supervision and as examiners. In terms of subject, the most frequently treated aspects are those related to psychology, pharmacology and medical sciences. The analysis of doctoral theses on substance abuse provides an overview of the structure and the most influential participants in this area. Increasing public concern and the creation of specific groups and research units are reflected in the growth of scientific output

Productivity trends and collaboration patterns: A diachronic study in the eating disorders field.

OBJECTIVE: The present study seeks to extend previous bibliometric studies on eating disorders (EDs) by including a time-dependent analysis of the growth and evolution of multi-author collaborations and their correlation with ED publication trends from 1980 to 2014 (35 years). METHODS: Using standardized practices, we searched Web of Science (WoS) Core Collection (WoSCC) (indexes: Science Citation Index-Expanded [SCIE], & Social Science Citation Index [SSCI]) and Scopus (areas: Health Sciences, Life Sciences, & Social Sciences and Humanities) to identify a large sample of articles related to EDs. We then submitted our sample of articles to bibliometric and graph theory analyses to identify co-authorship and social network patterns. RESULTS: We present a large number of detailed findings, including a clear pattern of scientific growth measured as number of publications per five-year period or quinquennium (Q), a tremendous increase in the number of authors attracted by the ED subject, and a very high and steady growth in collaborative work. CONCLUSIONS: We inferred that the noted publication growth was likely driven by the noted increase in the number of new authors per Q. Social network analyses suggested that collaborations within ED follow patters of interaction that are similar to well established and recognized disciplines, as indicated by the presence of a "giant cluster", high cluster density, and the replication of the "small world" phenomenon-the principle that we are all linked by short chains of acquaintances.

Patterns and Trends in Scientific Research on Generic Drugs.

PURPOSE: The purpose of this study to investigate the evolution and current status of peer-reviewed publications concerning generic drugs during the past few decades. METHODS: Scientific articles about generic drugs published until 2012 were retrieved through the PubMed/MEDLINE database, and a content analysis was performed. FINDINGS: Our study revealed an increasing number of publications on generics since 1984. Statins, antiretroviral therapies, and antiepileptics, followed by immunosuppressants and antithrombotic agents, were the most common therapeutic drug categories. IMPLICATIONS: Almost 60% of the generics detailed in studies indexed in MEDLINE were acting on the cardiovascular system as anti-infectives and on the nervous system, which is not surprising considering the leading causes of death and disability worldwide.

Colaboración científica en drogodependencias entre Latino América y la Unión Europea (2001-2010) a partir de la ISI Web of Science / Scientific cooperation on drug abuse between Latin American and the European Union (2001-2010) from the ISI Web of Science

Antecedentes La colaboración entre investigadores tiene una gran importancia, pues permite compartir conocimiento, garantiza la mejora de los métodos empleados y de los resultados obtenidos y, en definitiva, consolida el quehacer científico. Este estudio tiene como objetivo analizar las redes de colaboración en drogodependencias entre países latinoamericanos y de la Unión Europea, aplicando metodologías procedentes de la bibliometría y del análisis de redes sociales. Métodos Las bases de datos consultadas fueron Science Citation Index Expanded y Social Sciences Citation Index de la ISI Web of Science (WOS). Se utilizaron ecuaciones de búsqueda específicas en drogodependencias basadas en estudios previos. Los resultados de las búsquedas se depuraron con la exclusión de artículos correspondientes a categorías WOS que no eran propiamente sanitarias, así como los que no abordaban directamente aspectos biopsicosociales de drogodependencias. Se identificaron 228 artículos colaborativos durante la década 2001 y 2010. Resultados El país europeo con mayor cantidad de artículos de colaboración fue España (n=69) y Brasil el latinoamericano (n=73). Estados Unidos tuvo un papel muy activo en las redes de colaboración, participando en 85 artículos. La institución y el autor más productivo correspondieron a México. La colaboración entre América Latina y la Unión Europa se ha incrementado desde 2001 (n=4) a 2010 (n=50). El análisis mostró que la colaboración fue mayor entre España y Brasil (n=27), así como entre España y Colombia (n=23). Conclusiones En la última década se ha observado un incremento significativo de la colaboración científica entre los países latinoamericanos y europeos en drogodependencias, entre los que sobresalen Brasil y México, por un lado, y España e Italia por el otro. Destaca el papel de liderazgo de los Estados Unidos en las redes internacionales de investigación identificadas, ocupando un papel de intermediación en la colaboración entre diferentes países y continentes.

Background The importance of collaboration among research groups in the drug abuse field has been increasingly reinforced. These collaborations consolidate the scientific activity and guarantee the improvement of methods and outcomes. This study aims at analyzing the collaboration networks on drug abuse between Latin American and European countries by means of applying bibliometric methods and collaboration networks analysis. Methods The search was conducted through the Science Citation Index Expanded and Social Sciences Citation Index from ISI Web of Science data base. A total of 228 articles were found by using a specific drug abuse search strategy during the period 2001-2010. Articles belonging to WOS categories non-related to health sciences were excluded. Results The European country with the higher amount of collaborative articles was Spain (n=69) and Brazil was the Latin American country (n=73). United States of America had an active role in the collaboration networks (n=85). The most productive institution and author were from Mexico. The collaborative work between Latin America and Europe has increased from 2001 (n=4) to 2010 (n=50). The collaboration networks analysis showed that Spain and Brazil (n=27) as well as Spain and Colombia (n=23) were the countries with the highest joint production. Conclusions The last decade has seen a significant increase in the scientific collaboration between Latin American and European in drug addiction studies, where Brazil and Mexico stand out in Latin American countries, as well as Spain and Italy in Europe. The role of the United States leadership in international research networks is emphazided and identified, occupying an intermediary role in the collaboration between different countries and continents.

Coautoría y redes de colaboración en la investigación española sobre esclerosis múltiple (1996-2010) / Co-authorship and collaboration networks in Spanish research into multiple sclerosis (1996-2010)

Introducción. La colaboración científica es fundamental para el avance del conocimiento y es especialmente importante en ciencias de la salud. El objetivo de este trabajo es identificar los indicadores de colaboración científica y las redes de coautoría de los investigadores e instituciones españolas que publican sobre esclerosis múltiple (EM) durante el período 1996-2010. Materiales y métodos. Los trabajos objeto de estudio se han obtenido de las bases de datos internacionales Web of Science y Scopus, y nacionales IME e IBECS, aplicando perfiles de búsqueda específicos en cada una de ellas. Se cuantificaron todos los trabajos firmados en coautoría y se obtuvieron como medidas del análisis estructural el grado, índice de intermediación e índice de cercanía. Resultados. Durante el período 1996-2010 se publicaron 1.613 artículos, de los que el 92% se realizó en colaboración. Aplicando un umbral de 10 o más trabajos firmados en colaboración, se han identificado 20 grupos de investigación españoles en EM. La mayor parte de los trabajos (64,23%) se ha publicado en colaboración entre instituciones españolas, y el 33,85%, en colaboración con extranjeras. El análisis de la participación institucional ha permitido identificar un gran núcleo o red de relaciones de colaboración institucional que integra 27 instituciones, en la que ocupa un lugar central el Hospital Vall d’Hebron. La colaboración internacional está encabezada por Estados Unidos y países europeos como Reino Unido e Italia. Conclusión. A pesar de la bonanza de los indicadores de colaboración que los caracterizan, es necesario potenciar la colaboración entre autores, instituciones y grupos de trabajo, ya que ésta se relaciona positivamente con la calidad e impacto de la investigación y de las publicaciones medidos a través de las citas (AU)

Introduction. Scientific collaboration is vital for to the advance of knowledge and is especially important in health sciences. The aim of this study is to identify scientific collaboration indicators and co-authorship networks of researchers and Spanish institutions that publish on multiple sclerosis (MS) during the period 1996-2010. Materials and methods. The analyzed papers were obtained from Web of Science and Scopus international databases, and IBECS and IME national databases, applying specific search profiles in each one of them. In order to identify collaboration networks all signed papers were quantified and co-authored measures were obtained, as the different indexes, degree, intermediation and closeness. Results. 1,613 articles were published in the period 1996-2010, 92% of them in collaboration. With 10 or more works signed in collaboration, 20 Spanish research groups in MS were identified. 64.23% of the papers were published in collaboration between Spanish institutions, and 33.85% were in collaboration with foreign institutions. The institutional participation analysis has identified a large network of institutional partnerships that integrates 27 institutions, with the Hospital Vall d’Hebron in a central position. International collaboration is headed by the U.S. and European countries, most notably the UK and Italy. Conclusion. The most collaborative authors, institutions, and work groups in Spanish research in MS have been identified. Despite these indicators that characterize the collaboration in this area, it is necessary to enhance cooperation between them, since this collaboration is positively related to the quality and impact of research and publications (AU)

[Productivity and impact of Spanish research into multiple sclerosis (1996-2010)]. / Productividad e impacto de la investigacion espanola sobre esclerosis multiple (1996-2010).

AIMS: To quantify by means of bibliometric indicators the scientific productivity of Spanish researchers and institutions that publish on multiple sclerosis in national and international journals during the period 1996-2010, and to determine their impact. MATERIALS AND METHODS: Papers under study were obtained from Web of Science and Scopus international databases, as well as IBECS and IME national databases, applying specific search profiles in each. RESULTS: 1613 articles were published in 460 journals, of which 71 were Spanish and 389 non Spanish, being the most productive Revista de Neurologia (n = 204), Multiple Sclerosis (n = 102) and Neurology (n = 97). The articles have been published mostly in English (71.92%) and Spanish (27.40%), participating 4728 authors from 1224 different institutions. The 67.08% of the papers have been cited at least once, but 32.92% have not received citations. The mean number of citations per paper was 12.47 ± 28.42. The most cited journals have been Neurology (n = 1821), followed by Multiple Sclerosis (n = 1124) and Journal of Neuroimmunology (n = 890). CONCLUSIONS: The number of papers has increased steadily from 1996 to 2010, confirming the consolidation and growth of Spanish research in multiple sclerosis, whose results are published in a Revista de Neurologia and Multiple Sclerosis. We emphasize the growing internationalization of the Spanish research on the disease, but it is worrying that a third of the papers has not been cited.

Productividad e impacto de la investigación española sobre esclerosis múltiple (1996-2010) / Productivity and impact of Spanish research into multiple sclerosis (1996-2010)

Aims. To quantify by means of bibliometric indicators the scientific productivity of Spanish researchers and institutions that publish on multiple sclerosis in national and international journals during the period 1996-2010, and to determine their impact. Materials and methods. Papers under study were obtained from Web of Science and Scopus international databases, as well as IBECS and IME national databases, applying specific search profiles in each. Results. 1613 articles were published in 460 journals, of which 71 were Spanish and 389 non Spanish, being the most productive Revista de Neurología (n = 204), Multiple Sclerosis (n = 102) and Neurology (n = 97). The articles have been published mostly in English (71.92%) and Spanish (27.40%), participating 4728 authors from 1224 different institutions. The 67.08% of the papers have been cited at least once, but 32.92% have not received citations. The mean number of citations per paper was 12.47 ± 28.42. The most cited journals have been Neurology (n = 1821), followed by Multiple clerosis (n = 1124) and Journal of Neuroimmunology (n = 890). Conclusions. The number of papers has increased steadily from 1996 to 2010, confirming the consolidation and growth of Spanish research in multiple sclerosis, whose results are published in a Revista de Neurología and Multiple Sclerosis. We emphasize the growing internationalization of the Spanish research on the disease, but it is worrying that a third of the papers has not been cited (AU)

Objetivos. Cuantificar mediante indicadores bibliométricos la productividad científica de los investigadores e instituciones españolas que publican sobre esclerosis múltiple en revistas nacionales y extranjeras, durante el período 1996-2010, y determinar su repercusión o impacto. Materiales y métodos. Los trabajos objeto de estudio se han obtenido de las bases de datos internacionales Web of Science y Scopus, y nacionales IME e IBECS, aplicando perfiles de búsqueda específicos en cada una de ellas. Resultados. Se publicaron 1.613 artículos en 460 revistas, de las que 71 eran españolas y 389 extranjeras, siendo las más productivas Revista de Neurología (n = 204), Multiple Sclerosis (n = 102) y Neurología (n = 97). Los artículos se publicaron mayoritariamente en inglés (71,92%) y en español (27,40%), y participaron 4.728 autores diferentes procedentes de 1.224 instituciones. El 67,08% de los trabajos se ha citado al menos una vez y el 32,92% no ha recibido citas. La media del número de citas recibidas por documento ha sido de 12,47 ± 28,42. Las revistas más citadas han sido Neurology (n = 1.821), seguida de Multiple Sclerosis (n = 1.124) y Journal of Neuroimmunology (n = 890). Conclusiones. El número de artículos ha aumentado progresivamente desde 1996 hasta 2010, lo que confirma la consolidación y crecimiento de la investigación española en esclerosis múltiple, cuyos resultados se publican en una amplia serie de revistas españolas y extranjeras, entre las que destaca Revista de Neurología y Multiple Sclerosis. Se confirma la creciente internacionalización de la investigación española sobre la enfermedad, si bien es preocupante que una tercera parte de los trabajos no se haya citado (AU)