Comparación entre dos quinquenios (1998/2002 y 2003/2007) de la producción, repercusión y colaboración en tabaquismo de autores españoles a través del Science Citation Index / Comparison Between Two Five Year Periods (1998/2002 and 2003/2007) on the Production, Impact and co-Authorship of Publications on Tobacco and Smoking by Spanish authors Using the Science Citation Index

ObjetivoEl objetivo ha sido comparar entre dos quinquenios (1998 a 2002 con 2003 a 2007) la producción, repercusión y la colaboración de artículos sobre tabaquismo de autores españoles a través del Science Citation Index (SCI).MétodoLa búsqueda se realizó en el SCI Expanded. Fueron seleccionados todos los tipos de documentos y la búsqueda se restringió al “título”; palabras clave: “smok*” y “tobac*”.ResultadosFueron un total de 588 artículos, de los que 399 (67,85%) fueron originales, 54 (9,18%) cartas al director y 35 (5,95%) editoriales. La producción ha crecido, pasando de 234 (39,8%) documentos (98/02) a 354 (60,2%) en 03/07. Al comparar la media anual del total de artículos por quinquenios 98/02 vs 03/07 (47±8 vs 71±16 [p=0,024]) la diferencia es significativa, igual que si comparamos las medias anuales por quinquenios de los originales (34±6 vs 46±9 [p=0,041]). La media de citas/trabajo por quinquenios fue de 14,1±2,1 para 98/02 y del 5,6±2,5 para 03/07 (p=0,003). El índice de colaboración anual aumentó, pasando la media de 6,77 firmas/trabajo en 98/02, a 6,87 firmas/trabajo en 03/07. Ha aumentado el número de redes de colaboración de instituciones y autores.ConclusionesTanto la producción científica como la colaboración entre autores e instituciones han aumentado en el periodo estudiado. Son los artículos más antiguos los que más citas tienen(AU)

ObjectiveThe aim of this study was to compare the production, impact and co-authorship of publications by Spanish authors on smoking and tobacco between two time periods (1998/2002 vs 2003/2007) using Science Citation Index (SCI).MethodsThe literature search was performed in the SCI-Expanded on 20 November 2008. All types of documents by Spanish authors were selected. The search was restricted to the title, and the key words used were “smok*” and “tobac*”. The statistical analysis was descriptive (95% CI).ResultsA total of 588 documents were obtained, with 399 (67.85%) original papers, 54 (9.18%) letters to the editor, and 35 (5.95%) editorials. Productivity increased between the 98/02 to 03/07 periods: 234 (39.8%) documents versus 354 (60.2%). We have found significant differences between the two periods (98/02 vs 03/07) in total mean annual documents (47±8 vs 71±16 [p=0.024]) and total mean annual original papers (34±6 vs 46±9 [p=0.041]). The mean number of citations per document was 14.1±2.1 for 98/02 period and 5.6±2.5 for 03/07 period (p=0.003). The co-authorship annual index had increased; with a mean of 6.77 signatures/document for 98/02 period to a mean of 6.87 for 03/07 period. Authors and institution networks collaborations had increased between the two periods.ConclusionsSpanish production and co-authorship of documents on smoking and tobacco have increased between these two periods. The earlier period documents received more citations(AU)

Comparison between two five year periods (1998/2002 and 2003/2007) on the production, impact and co-authorship of publications on tobacco and smoking by Spanish authors using the Science Citation Index.

OBJECTIVE: The aim of this study was to compare the production, impact and co-authorship of publications by Spanish authors on smoking and tobacco between two time periods (1998/2002 vs 2003/2007) using Science Citation Index (SCI). METHODS: The literature search was performed in the SCI-Expanded on 20 November 2008. All types of documents by Spanish authors were selected. The search was restricted to the title, and the key words used were "smok*" and "tobac*". The statistical analysis was descriptive (95% CI). RESULTS: A total of 588 documents were obtained, with 399 (67.85%) original papers, 54 (9.18%) letters to the editor, and 35 (5.95%) editorials. Productivity increased between the 98/02 to 03/07 periods: 234 (39.8%) documents versus 354 (60.2%). We have found significant differences between the two periods (98/02 vs 03/07) in total mean annual documents (47 ± 8 vs 71 ± 16 [p=0.024]) and total mean annual original papers (34 ± 6 vs 46 ± 9 [p=0.041]). The mean number of citations per document was 14.1 ± 2.1 for 98/02 period and 5.6 ± 2.5 for 03/07 period (p=0.003). The co-authorship annual index had increased; with a mean of 6.77 signatures/document for 98/02 period to a mean of 6.87 for 03/07 period. Authors and institution networks collaborations had increased between the two periods. CONCLUSIONS: Spanish production and co-authorship of documents on smoking and tobacco have increased between these two periods. The earlier period documents received more citations.

[Spanish medical center collaboration on smoking research from 1999 through 2003 according to the Science Citation Index]. / Análisis de la red de colaboración científica sobre tabaquismo entre centros sanitarios españoles a través del Science Citation Index (1999-2003).

OBJECTIVE: To analyze the network structure of collaboration between medical centers sharing authorship of scientific articles on smoking. MATERIAL AND METHODS: Articles reporting smoking research by authors from 2 or more Spanish medical centers between 1999 and the end of 2003 were identified through the Science Citation Index. The network of collaboration behind the research was analyzed and the most important measures of centrality were compared. To display the data, scientometric maps were constructed using UCINET and NETDRAW network analysis tools. RESULTS: Thirty-five Spanish medical centers (29 hospitals and 6 health care clinics) in 8 autonomous communities were involved in 21 collaborative research projects. Hospital de La Princesa was the network core institution with the highest degrees of nodal (16), closeness (88.66), and betweenness (39) centrality. Other core nodes in the network were the following hospitals: de Cruces, San Pedro de Alcántara, La Paz, Vall d'Hebron, and General Yagüe. The autonomous communities of Castile and Leon, Madrid, and Catalonia were assigned positions at the core of the intercommunity collaborative network based on coauthorship of scientific papers shared among their medical centers. CONCLUSIONS: Network analysis helps identify the most influential institutions in a scientific community that generates coauthored articles in the field of smoking research. Hospital de la Princesa had the highest measures of centrality. The autonomous communities of Castile and Leon, Madrid, and Catalonia form a highly connected, cohesive subgroup within the network.

Análisis de la red de colaboración científica sobre tabaquismo entre centros sanitarios españoles a través del Science Citation Index (1999-2003) / Spanish medical center collaboration on smoking research from 1999 through 2003 according to the science citation index

Objetivo: Analizar la red de colaboración científica que genera la coautoría de artículos científicos entre centros sanitarios españoles en el área de tabaquismo. Material y métodos: Se seleccionaron los artículos sobre tabaquismo aparecidos en Science Citation Index entre los años 1999 a 2003, en cuya autoría participaron 2 o más centros sanitarios españoles. Se analizó la red de colaboración subyacente, comparando las medidas más importantes de centralidad y elaborando mapas bibliométricos que permiten su visualización. Se emplearon las herramientas informáticas para el análisis de redes UCINET® y NETDRAW®. Resultados: Treinta y cinco centros sanitarios españoles (29 hospitales y 6 centros de salud), pertenecientes a 8 comunidades autónomas distintas, intervinieron en 21 trabajos de colaboración nacional interinstitucional entre centros sanitarios. El Hospital de La Princesa obtiene los valores más altos de grado nodal (16), grado de proximidad normalizado (86,66) y grado de intermediación (39), y forma parte del núcleo de la red, junto con los Hospitales de Cruces, San Pedro de Alcántara, La Paz, Vall d'Hebron y General Yagüe. Las comunidades autónomas de Castilla y León, Madrid y Cataluña son asignadas al núcleo de la red de colaboración intercomunitaria basada en la coautoría de trabajos científicos entre centros sanitarios. Conclusiones: El análisis de redes permite identificar las instituciones más influyentes en la red de colaboración científica que genera la coautoría de artículos científicos en el área de tabaquismo. El Hospital de la Princesa destaca en todas las medidas de centralidad. Las comunidades autónomas de Castilla y León, Madrid y Cataluña configuran un subgrupo de la red altamente interconectado y cohesionado

Objective: To analyze the network structure of collaboration between medical centers sharing authorship of scientific articles on smoking. Material and methods: Articles reporting smoking research by authors from 2 or more Spanish medical centers between 1999 and the end of 2003 were identified through the Science Citation Index. The network of collaboration behind the research was analyzed and the most important measures of centrality were compared. To display the data, scientometric maps were constructed using UCINET and NETDRAW network analysis tools. Results: Thirty-five Spanish medical centers (29 hospitals and 6 health care clinics) in 8 autonomous communities were involved in 21 collaborative research projects. Hospital de La Princesa was the network core institution with the highest degrees of nodal (16), closeness (88.66), and betweenness (39) centrality. Other core nodes in the network were the following hospitals: de Cruces, San Pedro de Alcántara, La Paz, Vall d'Hebron, and General Yagüe. The autonomous communities of Castile and Leon, Madrid, and Catalonia were assigned positions at the core of the intercommunity collaborative network based on coauthorship of scientific papers shared among their medical centers. Conclusions: Network analysis helps identify the most influential institutions in a scientific community that generates coauthored articles in the field of smoking research. Hospital de la Princesa had the highest measures of centrality. The autonomous communities of Castile and Leon, Madrid, and Catalonia form a highly connected, cohesive subgroup within the network