Authoratory Statistics 2006-Q4 Release

Date of the release

Dec 20, 2006

Source of bibliographical information

PubMed/Medline databases

Criteria for author selection

affiliated institution is in US, UK or Canada; must be primary author or must have at least three publications in one year; must have at least two co-authors

Time period covered

from 2000 to 2006 inclusive

Last PubMed item considered

17,139,978

Total articles selected

1,969,525

Number of unique authors found

2,426,062

Unique authors selected for the release

267,402

Unique MeSH keywords extracted

23,885

Release History

2008-Q1 Release
2007-Q4 Release
2007-Q3 Release
2007-Q2 Release
2007-Q1 Release
2006-Q4 Release