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989. Percentage of Citations to Foreign Articles in U.S. Scientific & Technical Public Publications

[Citations are to three years' articles with two year lag. For example, 1997 citations are to articles published in 1993-1995.

 
Percentage of citations to foreign articles in U.S.
Science field
1990 1991 1992 1993 1994 1995 1996 1997
 
   Total science & engineering 29.6 29.9 30.4 31.0 31.7 32.1 32.9 33.5
Physics 34.4 34.9 34.6 35.5 36.9 38.0 39.4 40.9
Chemistry 36.4 36.1 37.3 37.6 38.6 38.1 39.3 40.7
Earth & space science 28.8 28.7 28.5 29.7 29.7 29.6 31.2 32.0
Mathematics 29.5 31.0 30.9 29.9 29.8 31.7 32.5 32.7
Biology 28.7 29.4 29.5 29.9 29.5 30.4 32.3 33.4
Biomedical research 29.8 29.9 30.4 30.9 31.5 31.6 32.0 32.3
Clinical medicine 30.0 30.4 31.4 32.0 32.8 33.4 34.2 34.5
Engineering technology 26.7 27.5 26.9 26.7 29.4 28.7 29.6 31.8
Psychology 17.8 17.7 17.5 17.7 17.7 18.2 19.2 20.2
Social science 14.7 14.9 14.4 14.7 15.1 15.6 16.9 17.2
Health & professional fields 9.5 9.3 9.3 9.8 9.9 9.9 10.1 10.7


Source: CHI Research, Inc., Haddon Heights, NJ; Science Indicators Database; and U.S. National Science Foundation, special tabulation.

http://www.nsf.gov/sbe/srs/stats.htm



https://allcountries.org/uscensus/989_percentage_of_citations_to_foreign_articles.html

These tables are based on figures supplied by the United States Census Bureau, U.S. Department of Commerce and are subject to revision by the Census Bureau.

Copyright © 2006 Photius Coutsoukis and Information Technology Associates, all rights reserved.