Co-authorship and collaboration networks in Spanish research into multiple sclerosis (1996-2010)
*Correspondencia: Dr. Rafael Aleixandre Benavent. Palacio Cerveró. Plaza Cisneros, 4. E-46003 Valencia.
E-mail: rafael.aleixandre@uv.es
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.
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.