JAMA. 2006 Jan 4;295(1):90-3.

The history and meaning of the journal impact factor.

Thomson Scientific, Philadelphia, Pa 19104, USA. garfield@codex.cis.upenn.edu

Supplemental Content

The journal impact factor: too much of an impact? [Ann Acad Med Singapore. 2006]
The journal impact factor: too much of an impact?
Ha TC, Tan SB, Soo KC. Ann Acad Med Singapore. 2006 Dec; 35(12):911-6.
Review Journal impact factor. [Indian J Dermatol Venereol Leprol. 2006]
Review Journal impact factor.
Kanthraj GR. Indian J Dermatol Venereol Leprol. 2006 Jul-Aug; 72(4):322-5.
Review The distribution of forensic journals, reflections on authorship practices, peer-review and role of the impact factor. [Forensic Sci Int. 2007]
Review The distribution of forensic journals, reflections on authorship practices, peer-review and role of the impact factor.
Jones AW. Forensic Sci Int. 2007 Jan 17; 165(2-3):115-28. Epub 2006 Jun 19.
'Impact factor' and 'immediacy index' of The National Medical Journal of India. [Natl Med J India. 2006]
'Impact factor' and 'immediacy index' of The National Medical Journal of India.
Menezes RG, Mohankumar TS. Natl Med J India. 2006 Sep-Oct; 19(5):295-6.
Review Citations and journal impact factors: questionable indicators of research quality. [Allergy. 1997]
Review Citations and journal impact factors: questionable indicators of research quality.
Seglen PO. Allergy. 1997 Nov; 52(11):1050-6.

How well are journal and clinical article characteristics associated with the journal impact factor? a retrospective cohort study. [J Med Libr Assoc. 2012]
How well are journal and clinical article characteristics associated with the journal impact factor? a retrospective cohort study.
Lokker C, Haynes RB, Chu R, McKibbon KA, Wilczynski NL, Walter SD. J Med Libr Assoc. 2012 Jan; 100(1):28-33.
Nine criteria for a measure of scientific output. [Front Comput Neurosci. 2011]
Nine criteria for a measure of scientific output.
Kreiman G, Maunsell JH. Front Comput Neurosci. 2011; 5:48. Epub 2011 Nov 10.
Quantitative and Qualitative Analysis of PubMed-Indexed Biomedical Publications in Oman from years 2005-2009. [Oman Med J. 2011]
Quantitative and Qualitative Analysis of PubMed-Indexed Biomedical Publications in Oman from years 2005-2009.
Rohra DK, Azam SI. Oman Med J. 2011 May; 26(3):160-5.

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