The category profile provides a comprehensive overview, beginning in 2003, for each of the 232 different subject categories in the JCR. All metrics related to a subject category in the Journal Citation Record are available,including: number of journals and articles in the category, total cites, median Impact Factor, Aggregate Impact Factor, Aggregate Immediacy Index, Cited and Citing category half-life. Each entry reflects data for that JCR year. Displays of multi-year metrics trends are accessed by clicking the Graph link found below many header fields in the table. Category-level metrics were first calculated on the year 2003 JCR data and are not available prior to that year.
The data table can be downloaded in either Excel or CSV format, while the charts contained within each tab can be exported as a PDF.