Field rankings for Canada

Ranked by relative citation impact. Data provided by Thomson Reuters from its Essential Science Indicators, 1999-2009

September 10, 2009

 Field Papers CitationsCitations per paperWorld average% +/–
1Space science5,610 106,740 19.0312.99+ 46
2Clinical medicine86,384 1,379,868 15.9711.66+ 37
3 Physics23,736 246,360 10.388.02+ 29
4Agricultural sciences7,662 59,2 7.746.10+
5Pharmacology6,111 82,905 13.5710.83+ 25
6Chemistry31,936 369,093 11.569.60+ 20
7Plant/animal sciences30,853 249,712 8.096.83+ 18
8Environment/ecology17,752 198,265 11.179.56+ 17
9Materials science10,993 71,781 6.535.73+ 14
10Geosciences17,910 171,518 9.588.46+ 13
11Psychiatry/psychology16,351 179,179 10.969.72+ 13
12Computer science11,586 39,944 3.453.08+ 12
13Biology/biochemistry25,776 452,735 17.5615.76+ 11
14Engineering32,910 143,409 4.363.92+ 11
15 Mathematics11,850 39,394 3.323.00+ 11
16 Microbiology6,241 98,593 15.8014.46+ 9
17 Neuroscience18,368 351,076 19.1117.56+ 9
18Molecular biology13,967 353,030 25.2823.90+ 6
19 Economics/business7,973 41,580 5.225.04+ 4
20Immunology5,267 105,742 20.0819.95+ 1
The data above were extracted from Thomson Reuters’ Essential Science Indicators database. The database, currently covering the period January 1999 to April 2009, surveys only journal articles (original research reports and review articles) indexed by Thomson Reuters. Articles are assigned to a category based on the journals in which they were published and the journal-to-category field-definition scheme used by Thomson Reuters. Both articles tabulated and citation counts to those articles are for the period indicated.

Canada ranks seventh in output, sixth in citations received, and tenth in citations per paper (behind Switzerland, the US, Denmark, the Netherlands, Scotland, England, Sweden, Finland and Belgium respectively) across the science and social science fields surveyed in Essential Science Indicators. The table ranks fields for Canada by relative citation impact – that is, citations per paper for Canada in a field compared with the world’s citations per paper in the same field. Canada’s percentage above or below the world average is shown at the far right. The highest-ranked fields for Canada, according to this measure, are space science, clinical medicine and physics. In no fields did Canada’s performance fall below the world average.

For more on the Essential Science Indicators database, see: http://scientific.thomsonreuters.com/products/esi

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