NOTE: The CiteScore methodology has recently been updated and has been retrospectively applied to the values in previous years as well. The historical values above and the description below will be updated shortly.

CiteScore

The CiteScore measures the average number of citations received per article published in a journal. CiteScore values are based on a journal's citation count in a particular year to articles it published in the three previous calendar years, divided by the total number of articles in these three previous years. For example, the 2018 CiteScore for a journal is calculated as follows:

• A = citations received in 2018 to articles published in the journal in 2015, 2016 and 2017 (note that citations to "Articles in Press" are not included in this count)
• B = sum of the number of articles published in the journal in 2015, 2016 and 2017 (note that all article types are included; however "Articles in Press" are not included in this count)
• 2018 CiteScore = A/B

Note that the CiteScore is calculated using data from the Scopus database. A CiteScore is available for most active serial titles on Scopus, including peer-reviewed journals, book series, conference proceedings and trade journals.

CiteScore Percentile

The CiteScore Percentile indicates the relative standing of a journal within its subject field. A journal which has a CiteScore Percentile of 85% in a particular category is ranked according to CiteScore as higher than 85% of the journals within that category. A journal will receive a CiteScore Percentile for every subject category in which it is indexed in Scopus. Note that if a journal is categorized into multiple Scopus categories, then only the highest percentile category for the journal will be shown in the graph and table above.