Monday, April 07, 2008

More baseline data from PubMed

Thanks to Jim Till on Be Openly Accessible or Be Obscure for More (and better!) Baseline Data from PubMed.

Jim's data, dated April 6, 2008 - the day before the NIH new public access requirement took effect:

Some other data about the percentage of freely-accessible articles, obtained on the same day using the same key words:

Published within the last 2 years: 44366/144166=31%
Published within the last 1 year: 12241/67486=18%
Published within the last 180 days: 3894/30602=13%
Published within the last 90 days: 1012/11947=8%
Published within the last 60 days: 454/6475=7%
Published within the last 30 days: 143/2267=6%

As Jim points out, when the effects of the NIH mandate begin to be seen, these percentages are expected to rise dramatically!

What a great way to kick off OA Week, in recognition of the NIH mandate policy.

This post is part of the Dramatic Growth of Open Access Series.