Friday, July 6, 2012

PLOS One's 2011 Impact Factor

I've previously blogged about why PLOS One has a relatively high impact factor despite not screening article by importance, only by technical accuracy. As the 2011 journal citation report
has now been released it's time to look at what happened to PLOS One's impact factor last year:



The impact factor is down but only by 7% despite the increase in articles published. Of course, the 13,781 articles published in 2011 aren't used to compute the impact factor. The 10,977 published in 2009 and 2010 are used to compute the 2 year impact factor. I would predict that the IF will decline further in 2012 with the doubling in the number of articles published in 2011 relative to 2010. But for the moment it is still pretty respectable.
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8 comments:

  1. AnonymousSeptember 27, 2012 at 1:30 PM

    So, what do you have against PLOS ONE? They refused to publish your paper or what?

    ReplyDelete
  2. David SternOctober 4, 2012 at 2:30 PM

    Huh? - I did publish a paper in PLOS ONE. I don't have anything against the journal.

    ReplyDelete
  3. AnonymousNovember 21, 2012 at 4:19 AM

    As Journal of Immunology has demonstrated, increasing publication numbers can significantly undervalue a publication in terms of impact factor alone.

    ReplyDelete
  4. AnonymousFebruary 2, 2013 at 12:32 AM

    Interesting analysis! Do you know the impact factor of Plos One 2012?

    Regards

    ReplyDelete
    Replies
    1. AnonymousJune 26, 2013 at 11:42 PM

      yeah it is around 3.7, further decreased

      Delete
  5. David SternFebruary 4, 2013 at 10:58 PM

    The 2012 impact factors won't be published till about halfway through this year.

    ReplyDelete
  6. AnonymousMay 24, 2013 at 4:14 AM

    Plos One 2012 impact factor will be 3.73 give or take 0.1.

    ReplyDelete
    Replies
    1. AnonymousJune 19, 2013 at 8:41 PM

      How did you calculate this factor?

      Delete