BMJ  2004;329:546-547 (4 September), doi:10.1136/bmj.329.7465.546

Paper

Relation between online "hit counts" and subsequent citations: prospective study of research papers in the BMJ

Thomas V Perneger, professor of health services evaluation1

1 Institute of Social and Preventive Medicine, University of Geneva, CH-1211 Geneva, Switzerland thomas.perneger@hcuge.ch

The first 150 words of the full text of this article appear below.

Introduction

Evaluation of published medical research remains a challenge. Two classic yardsticks are the citation count (the number of times a given paper is cited by others)1 2 and the impact factor of the journal that published the paper (which reflects the average number of citations per article).2 3 However, the citation count can be assessed only several years after publication, and the impact factor is not paper specific and is thus virtually meaningless in assessing any given paper.3 Another measure, which can be obtained rapidly and is paper specific, is the "hit count" (the number of times a paper is accessed online). Whether this count predicts citations is unknown. I examined this issue prospectively in a cohort of papers published in the BMJ.

Methods and results

The study used articles published in volume 318 of the BMJ (1999) in sections titled Papers, General Practice, and Information in Practice. The hit counts (full text articles, . . . [Full text of this article]

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Rapid Responses:

Read all Rapid Responses

Those papers read most are cited most
Jon R Brassey
bmj.com, 3 Sep 2004 [Full text]
Citation errors
Phillip J. Colquitt
bmj.com, 3 Sep 2004 [Full text]
Annoying that the BMJ published wrong hits data on their website
Gunther Eysenbach
bmj.com, 6 Sep 2004 [Full text]
Prior evidence that downloads predict citations
Stevan Harnad, et al.
bmj.com, 6 Sep 2004 [Full text]
On 'hit counts'
Maged N.K. Boulos
bmj.com, 6 Sep 2004 [Full text]
Real hits and shadow hits
Paul R. Mazur
bmj.com, 6 Sep 2004 [Full text]
Publication of Hit counts May Lead to Cheating.
Richard D Kennedy, et al.
bmj.com, 6 Sep 2004 [Full text]
Scientific value versus scientific interest
Jeffrey Mann
bmj.com, 6 Sep 2004 [Full text]
Journal Readership and Impact Factors
Kai Ming Chow, et al.
bmj.com, 8 Sep 2004 [Full text]
Re: Annoying that the BMJ published wrong hits data on their website
Tony Delamothe
bmj.com, 6 Sep 2004 [Full text]
In response
Thomas V Perneger
bmj.com, 7 Sep 2004 [Full text]
Journal online bias
Syed Abdul Mujeeb
bmj.com, 10 Sep 2004 [Full text]



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