Comparison of amount of biomedical research originating from the Europ
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《英国医生杂志》
1 Department of Environmental Health, Harvard School of Public Health, Boston, MA, 2 Alfa Institute of Biomedical Sciences (AIBS), 9 Neapoleos Street, 15123 Marousi, Athens Greece
Correspondence to: M E Falagas, m.falagas@aibs.gr
Objective To examine and compare the research productivity of the European Union, the four "candidate" countries (those currently waiting to join the EU), and the United States in several fields of biomedical sciences.
Design A retrospective observational study—bibliometric analysis.
Data sources Manuscripts published by authors from each country separately and from each group of countries for the period 1994 to 2004 and included in the Essential Science Indicators database of the Institute of Scientific Information.
Main outcome measures Number of published articles and number of citations, adjusted for gross domestic product and population size.
Results 1 485 749 articles were published by authors from the EU compared with 1 356 805 from the US. The research productivity of the first 15 countries to join the EU, adjusted for population, was lower (76%) than that of the US—and even lower (66%) when the 10 newest EU countries were included in the analysis.
Conclusion The newest EU members and the EU candidate countries need further help and resources to increase their productivity, thereby improving the productivity of the EU as a whole.
The European Union and the United States are the leading powers in biomedical research and publications, although the US is ahead of the EU in most scientific disciplines.1 2 The EU has been gradually closing this gap, but the union's future expansion might widen the gap again in favour of the US.3 4 We examined the biomedical research output of the EU's member countries and of four candidate countries for the EU, to compare the geographical distribution of output across Europe with the output in the US.
Methods
Our study covered the period 1994 to 2004. We examined data for the US plus three groups of European countries: (a) the first 15 states joining the EU (including three—Austria, Finland, Sweden—that did not join until January 1995); (b) the 10 countries that joined the EU in May 2004; and (c) the four "candidate" countries waiting to join (Bulgaria, Croatia, Romania, Turkey). We estimated the amount of research produced by each country separately and by each group, using the information included in the Essential Science Indicators database of the Institute for Scientific Information. A paper was attributed to any country (or countries) if an address for that country was given by one or more authors; therefore an article could be attributed to more than one country.
We focused our search on nine scientific fields: biology and biochemistry; clinical medicine; immunology; microbiology; molecular biology and genetics; multidisciplinary; neuroscience and behaviour; psychiatry and psychology; and pharmacology and toxicology.
We used the online World Bank database to retrieve information on the average population size, the mean gross domestic product, and percentage of gross domestic product devoted to research and development.5
Results
We identified 1 485 749 articles published by authors from the European Union and the four candidate countries and 1 356 805 articles published by US authors. In the table we present raw and adjusted indicators for each country (adjusted for population size, gross domestic product, and percentage of gross domestic product devoted to research and development) and the average indicators for the different subgroups and the US. The research productivity for the group of original 15 member states of the EU, adjusted for population, was three quarters (76%) of the productivity of the US, but when the 10 newest members were also included, EU productivity declined to 66%, and when the four candidate countries were also included, EU productivity reduced further, to 55%. However, after adjustment for funds devoted to research and development, the number of published articles from the 25 EU member states plus the candidate countries is much higher than the number of published articles from the US.
Biomedical research productivity in Europe and United States, 1994-2004
Discussion
Vergidis PI, Karavasiou AI, Paraschakis K, Bliziotis I, Falagas ME. A bibliometric analysis of global trends of research productivity in microbiology. Eur J Clin Microbiol Infect Dis 2005;24: 342-6.
Rosmarakis ES, Vergidis PI, Soteriades ES, Paraschakis K, Papastamataki PA, Falagas ME. Estimates of global production in cardiovascular diseases research. Int J Cardiol 2005;100: 443-9.
Stossel TP, Stossel SC. Declining American representation in leading clinical-research journals. N Engl J Med 1990;322: 739-42.
EU eliminates citation gap with America. Nature 1997;387: 537.
The World Bank. World development indicators 2002. CD Rom. 2004.
Manfrass K. Europe: south-north or east-west migration? Int Migr Rev 1992;26: 388-400.
Zetterstrom R. Bibliometric data: a disaster for many non-American biomedical journals. Acta Paediatr 2002;91: 1020-4.
Auger JM, Lymberis A. Current and future R&D activities of the EC-IST programme in eHealth. Stud Health Technol Inform 2004;108: 81-7.(Elpidoforos S Soteriades, research fello)
Correspondence to: M E Falagas, m.falagas@aibs.gr
Objective To examine and compare the research productivity of the European Union, the four "candidate" countries (those currently waiting to join the EU), and the United States in several fields of biomedical sciences.
Design A retrospective observational study—bibliometric analysis.
Data sources Manuscripts published by authors from each country separately and from each group of countries for the period 1994 to 2004 and included in the Essential Science Indicators database of the Institute of Scientific Information.
Main outcome measures Number of published articles and number of citations, adjusted for gross domestic product and population size.
Results 1 485 749 articles were published by authors from the EU compared with 1 356 805 from the US. The research productivity of the first 15 countries to join the EU, adjusted for population, was lower (76%) than that of the US—and even lower (66%) when the 10 newest EU countries were included in the analysis.
Conclusion The newest EU members and the EU candidate countries need further help and resources to increase their productivity, thereby improving the productivity of the EU as a whole.
The European Union and the United States are the leading powers in biomedical research and publications, although the US is ahead of the EU in most scientific disciplines.1 2 The EU has been gradually closing this gap, but the union's future expansion might widen the gap again in favour of the US.3 4 We examined the biomedical research output of the EU's member countries and of four candidate countries for the EU, to compare the geographical distribution of output across Europe with the output in the US.
Methods
Our study covered the period 1994 to 2004. We examined data for the US plus three groups of European countries: (a) the first 15 states joining the EU (including three—Austria, Finland, Sweden—that did not join until January 1995); (b) the 10 countries that joined the EU in May 2004; and (c) the four "candidate" countries waiting to join (Bulgaria, Croatia, Romania, Turkey). We estimated the amount of research produced by each country separately and by each group, using the information included in the Essential Science Indicators database of the Institute for Scientific Information. A paper was attributed to any country (or countries) if an address for that country was given by one or more authors; therefore an article could be attributed to more than one country.
We focused our search on nine scientific fields: biology and biochemistry; clinical medicine; immunology; microbiology; molecular biology and genetics; multidisciplinary; neuroscience and behaviour; psychiatry and psychology; and pharmacology and toxicology.
We used the online World Bank database to retrieve information on the average population size, the mean gross domestic product, and percentage of gross domestic product devoted to research and development.5
Results
We identified 1 485 749 articles published by authors from the European Union and the four candidate countries and 1 356 805 articles published by US authors. In the table we present raw and adjusted indicators for each country (adjusted for population size, gross domestic product, and percentage of gross domestic product devoted to research and development) and the average indicators for the different subgroups and the US. The research productivity for the group of original 15 member states of the EU, adjusted for population, was three quarters (76%) of the productivity of the US, but when the 10 newest members were also included, EU productivity declined to 66%, and when the four candidate countries were also included, EU productivity reduced further, to 55%. However, after adjustment for funds devoted to research and development, the number of published articles from the 25 EU member states plus the candidate countries is much higher than the number of published articles from the US.
Biomedical research productivity in Europe and United States, 1994-2004
Discussion
Vergidis PI, Karavasiou AI, Paraschakis K, Bliziotis I, Falagas ME. A bibliometric analysis of global trends of research productivity in microbiology. Eur J Clin Microbiol Infect Dis 2005;24: 342-6.
Rosmarakis ES, Vergidis PI, Soteriades ES, Paraschakis K, Papastamataki PA, Falagas ME. Estimates of global production in cardiovascular diseases research. Int J Cardiol 2005;100: 443-9.
Stossel TP, Stossel SC. Declining American representation in leading clinical-research journals. N Engl J Med 1990;322: 739-42.
EU eliminates citation gap with America. Nature 1997;387: 537.
The World Bank. World development indicators 2002. CD Rom. 2004.
Manfrass K. Europe: south-north or east-west migration? Int Migr Rev 1992;26: 388-400.
Zetterstrom R. Bibliometric data: a disaster for many non-American biomedical journals. Acta Paediatr 2002;91: 1020-4.
Auger JM, Lymberis A. Current and future R&D activities of the EC-IST programme in eHealth. Stud Health Technol Inform 2004;108: 81-7.(Elpidoforos S Soteriades, research fello)