Based on the 2007 Journal Citation Reports a number of open access journals published by BioMed Central have shown an increase in the impact factor ranking with eight journals above 4.0 and 12 with a ranking greater than 3.0. For the full report: BioMed Central Blog, June 19, 2008.
The impact factor is defined by Journal Citation Reports (JCR) as the average number of times articles from the journal published in the past two years have been cited in the JCR year. An impact factor of 1.0 means that on average, the articles published one or two years ago have been cited one time. An impact factor of 2.5 means that on average, the articles published one or two years ago have been cited two and a half times. Citing articles may be from the same journal; most citing articles are from different journals. For more information on JCR: Thomson Reuters JCR.
For a journal to have an impact factor ranking in JCR it must be tracked by Thomson Reuters for three years. Many of the BMC journals are new to the field and do not yet have impact factor rankings. For more information on the BMC journals and their status on Impact Factor ranking: BMC list.
1 response so far ↓
1 Matthew Cockerill // Jun 27, 2008 at 3:53 am
One small correction – we actually have 17 journals (not 12) with an official Impact Factor above 3.0.
And this is likely to increase further as we are shortly expecting an upwards correction to the Microbial Cell Factories Impact Factor, and the release of two further impact factors which were due this year but have been slightly delayed…
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