“chap01” — 2003/9/16 — page 2 — #2
BARTON W. TRAWICK AND JOHANNA R. MCENTYRE
Total
number of genetics
records
in PubMed
Number
of articles
Year
Records
with links
to fulltext
Records with links
to
FREE fulltext
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Figure 1 The number of PubMed records that are classified under the general MESH
term “Genetics” has grown from around 48,000 in 1992 to 93,000 by the end of 2002.
Around 1995, a number of science, technical, and medical (STM) journals began to
establish an online presence.
a
Since that time, the proportion of records that provide
links to online full-text articles has increased. In 2001 and 2002, around 87% of
“Genetics” records have links to online full-text articles; about 25% of these are freely
available. (The smaller proportion of free-access articles in 2002 is indicative of the
common practice of publishers to delay free access for a period of time after
publication.)
a
Hitchcock S,
et al. 1996. A survey of STMonline journals 1990–95: the calm before
the storm.
http://journals.ecs.soton.ac.uk/survey/survey.html
articles, and books, as well as ‘internet-only content’ in the form of news and
summaries.
For the purposes of this chapter, ‘bibliographic databases’ will be consid-
ered as ‘any large, stable, collection of primarily text-based information that
is available over the Internet’. The chapter will therefore not discuss individ-
ual journal titles (although it could be argued that the online collection of
articles from a single journal constitutes a small database), nor will it discuss
the more popular health and medicine websites (though there are many to
choose from). Further, molecular biology sequence databases frequently have
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