Problems with impact factors computed and published by the ISI?

[Juan Miguel Campanario]

Dear people:

Many thanks for your e-mail messages concerning my post on problems
with impact factors.

I did not computed citations. I just used the numbers publised by the ISI
in the
JCR.
Below is an excerpt (copy+paste) I took from the JCR version available
to universities in Spain. I just reproduced the computations.
I would be glad to hear other people who has access to
the JCR. Please,could you tell me if I am using the right numbers?

Regards
Juan Miguel Campanario
http://www.uah.es/otrosweb/jmc



ATHEROSCLEROSIS SUPPLEMENTS

2003 IMPACT FACTOR

<http://jcr02.isiknowledge.com/JCR/#top>
342e13.jpg
Journal Impact Factor
342e31.jpg


Cites in 2003 to articles published in: 2002 = 63    Number of articles
published in: 2002 = 24
   2001 = 49      2001 = 11
   Sum: 112      Sum: 35
Calculation: Cites to recent articles  112 = 4.457
   Number of recent articles  35
Journal Impact Factor
342e63.jpg


ERROR: 112 / 35 = 3.3



CA-A CANCER JOURNAL FOR CLINICIANS

2001 IMPACT FACTOR

Cites in 2001 to articles published in: 2000 = 595    Number of articles
published in: 2000 = 16
   1999 = 483      1999 = 18
   Sum: 1078      Sum: 34
Calculation: Cites to recent articles  1078 = 35.933
   Number of recent articles  34

ERROR: 1078 / 34 = 31.706
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Juan Miguel Campanario (http://www.uah.es/otrosweb/jmc)

A solas mi vida paso, ni envidiado ni envidioso
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