Journals with Impact Factors

Journals currently covered by Thomson Reuters (ISI)

Unofficial Impact Factors* for other BioMed Central journals

* Unofficial Impact Factors

For journals that have not been tracked for long enough to have an Impact Factor, or are not yet tracked by Thomson Reuters(ISI), it is nonetheless possible to calculate a unofficial Impact Factor, which we have done for some journals.

Unofficial 2008 Impact Factors were established by dividing the number of times articles published in 2006 and 2007 were cited in 2008, based on a search of the Science Citation Index database, by the number of articles published in the previous two years (2006 and 2007).

SCImago Journal Ranking

The SCImago Journal Rank (SJR) is a free alternative journal citation-metric based on citation information from Scopus. All BioMed Central journals are included in Scopus within a year of launch, and so the SJR rankings provide a more comprehensive picture of the impact of BioMed Central's journals than the Thomson Reuters Journal Citation Reports. For more information about SCImago, and the SCImago rankings of specific BioMed Central journals see this BioMed Central blog post.

The table below shows a selection of BioMed Central journals and their SJR ranking, for SJR data on other BioMed Central journals, look up the journal on the SCImago website.