Citation classics in anaesthesia and pain journals: a literature review in the era of the internet.
BACKGROUND
The number of citations an article receives reflects its scientific impact. The introduction of internet-based resources to search and access articles has made it possible to review even whole scientific areas. This study identifies the top 50 most-cited articles over the last 25 years in specialty journals dedicated to anaesthesia and pain, respectively.


METHODS
Twenty-two journals listed in The Science Citation Index Expanded in the field of anaesthesiology and nine major medical journals were screened using the cited reference option to identify articles cited more than 100 times between 1986 and 2002. The top 50 articles in specialty journals and the top 10 articles in major medical journals concerning anaesthesia and pain were retrieved for further analysis.


RESULTS
The most-cited articles in specialty journals were published from 1986 to 1997 and received a mean of 222 (anaesthesia) and 279 (pain) citations. Sixty-seven institutions produced the most-cited articles and of those 28 were located outside North America. The articles were published in six journals led by the Journal of Pain (50 articles) and Journal of Anaesthesiology (39 articles). Forty-seven articles were classified as related to clinical experience, 33 were review articles, and 20 discussed basic science.


CONCLUSIONS
To make an article a possible 'citation classic' in anaesthesiology, it should be published in one of six leading journals and originate from an established institute in North America. Internet resources to publish and cite the literature have to date not advanced any article published in the last 5 years to the top 100 list.
Terajima
K
K
Department of Anaesthesiology and Intensive Care, Sahlgrens University Hospital, Göteborg, Sweden.
Aneman
A
A
D000776:Anesthesiology / Q000639:trends*; D020407:Internet; D059408:Pain Management; D011643:Publishing