This new metric, devised by Elsevier, is similar to the Journal Impact Factor.  The primary difference is that all publshed material in a journal (including editorials, letters and news items) are counted in the calculation.

Calculating a CiteStore: 

The CiteScore is calculated by dividing the number of all documents published in a journal during the preceding 3 years (A) by the citations to those documents (B) .

CiteScore Calculation  

Limitations of CiteScore:

- inclusion of content such as letters and editorials can dilute the results

- suspicion of bias since this metric has been devised by a scholarly publishing company