Survival Instincts  

Scopus Journal Analyzer does not have complete citation information for articles published prior to 1996.

Four years of data are necessary to calculate a SJR or SNIP. Because Scopus records data starting in 1996, the first year available for a SJR or SNIP is 1999.

The Journal Analyzer provides a view of journal performance using Scopus citation data and includes two new journal metrics - SJR and SNIP.

Using citations from nearly 18,000 titles from 5,000 international publishers, the Journal Analyzer goes back to 1996.

Comparing citations among the Big 3 Medicine Journals

Scopus Journal Analyzer will chart:

• SJR (SCImago Journal Rank reflects prestige of source: value of
   weighted citations per document)
• SNIP (Source normalized impact per paper: corrects for differences
   in the frequency of citation across research fields)
• Citations (Total number of citations received by a journal in the year,
  considering all documents)
• Documents (Total number of documents published in the journal in the year)
• % Not Cited (Percentage of documents published in that year that have never
  been cited to date)
• Percent Review represents the percentage of articles in a journal that are categorized as a review. 

You can compare up to 10 journals.