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Re: Dramatic growth of open access



All (healthy) journals increase their article output somewhat year by year, though this is to some extent offset (at least in the best of them) by rising acceptance standards. So any growth in OA *articles* would need to be measured as a %age of total article output in any given period. I'm not sure this has been done, though it must surely be possible

Sally Morris, Chief Executive
Association of Learned and Professional Society Publishers
South House, The Street, Clapham, Worthing, West Sussex BN13 3UU, UK
Email: sally.morris@alpsp.org

----- Original Message -----
From: <matt@biomedcentral.com>
To: <liblicense-l@lists.yale.edu>
Sent: Thursday, April 13, 2006 1:12 AM
Subject: Re: Dramatic growth of open access

"I don't think the data show that open access continues to grow
dramatically, not in medicine at least"

There are a several reasons that a year by year analysis of the
DOAJ, is not really suitable as a metric for the growth of OA.

Firstly, as has been discussed recently on this list, the DOAJ
does not list the year that a journal went open access. Rather
(as I understand it) it lists the first year for which OA content
is available from the journal concerned. As such, any journals
which have converted to open access, rather than starting as open
access journals, are assigned to the wrong year in the analysis
below, underestimating the number of journals going OA in recent
years, and overestimating the number of OA journals launched in
the past.

(2) The number of open access journals is in any case an poor
proxy for the overall growth of open access publishing. BioMed
Central launched 50+ titles in the year 2000 (contributing to an
apparent peak in new open access journals in that year). That is
the most journals BioMed Central ever launched in a single year.
So did we "peak" in 2000? Hardly. BioMed Central published 5586
peer reviewed open access articles in 2005, compared to 224 in
2000 - a 25-fold increase, and we continue to see very strong
year on year growth.

(3) Looking a the number of journals in the DOAJ fails to account
for the growing take up of optional open access (e.g. as
practiced by PNAS et al.) and also fails to distinguish between
huge open access journals (like NAR) and tiny ones.

A better approach would be to analyse the number of immediate
open access articles published year on year. This is challenging
to do, not least because several years on it is very difficult to
be sure what *was* open access at the moment of publication. But
that is really the metric that counts.

Matthew Cockerill, Ph.D.
Publisher
BioMed Central ( http://www.biomedcentral.com/ )
34-42, Cleveland Street
London
W1T 4LB
UK

Email: matt@biomedcentral.com