International Journal of Cardiology 122 (2007) e16 – e17 www.elsevier.com/locate/ijcard
Editorial
Most frequently cited and downloaded papers from Volume 98 (2005) Andrew J.S. Coats ⁎ University of Sydney, NSW 2006, Australia Received 19 August 2007; accepted 22 August 2007
Abstract We have previously commented on the difference between citations and requests for downloads of full text articles. We analyzed the download and citation statistics for articles in the first volume in 2005 (volume 98), giving sufficient time for the value of articles to be appreciated. We might have expected some similarity between the most downloaded and the most cited articles. The top 8 for downloads in Volume 98 published between January and February 2005 were three major review articles, a clinical trial and 4 reports from extensive clinical observational research. In terms of citations there is a quite different list. We reach number 4 on the citations list before we obtain any article from the top 10 of the download list. It is clear that there is a little correlation between download statistics and citation measures. Which measure better reflects quality or impact remains to be evaluated. © 2007 Published by Elsevier Ireland Ltd. Keywords: Download; Citations; Research assessment
We offer a service to our readers that bring to their attention the most read and referred to articles published within each volume of the journal. We have previously commented on the difference between citations and requests for downloads of full text articles [1]. Although both have shown a dramatic increase in the journal over the last 5–7 years [2], both tell us something about influential articles and with the profusion of scientific literature these are the articles to watch out for; those your colleagues are reading and citing in their own work. We remain astounded, however, how differently citation and download statistics track even over the short to medium period when a paper has its first major impact. If we analyse the first volume in 2005 (Volume 98), thereby giving sufficient time for the value of articles to be appreciated, we would have expected some similarity between the most downloaded and the most cited articles. The top 8 for downloads in Volume 98 published between January and February 2005 were three major review articles [3–5], a clinical trial [6] and 4 reports from extensive clinical observational research [7–10]. ⁎ Tel.: +61 2 9036 9504; fax: +61 2 9036 9522. E-mail address:
[email protected]. 0167-5273/$ - see front matter © 2007 Published by Elsevier Ireland Ltd. doi:10.1016/j.ijcard.2007.08.005
In terms of citations there is a quite different list headed by small intensive clinical trials such as that of Bosentan in Eisenmenger's syndrome [11], and observational clinical science studies [12] We reach number 4 on the citations list before we obtain any article from the top 10 of the download list [9,5]. Further down the citations list we have further clinical science papers [13–18] and single centre trials and series [19,20]. Which measure better reflects quality or impact remains to be evaluated. References [1] Coats AJ. Top of the charts: download versus citations in the International Journal of Cardiology. Int J Cardiol Nov 2 2005;105(2):123–5. [2] Coats AJ. Five years of progress for international journal of cardiology. Int J Cardiol Apr 8 2005;100(1):173–5. [3] Izzo AA, Di Carlo G, Borrelli F, Ernst E. Cardiovascular pharmacotherapy and herbal medicines: the risk of drug interaction. Int J Cardiol Jan 2005;98(1):1–14. [4] Koenig W. Predicting risk and treatment benefit in atherosclerosis: the role of C-reactive protein. Int J Cardiol Feb 15 2005;98(2):199–206. [5] Abbas AE, Lester SJ, Connolly H. Pregnancy and the cardiovascular system. Int J Cardiol Feb 15 2005;98(2):179–89. [6] Peters S, Trummel M, Meyners W, Koehler B, Westermann K. Valsartan versus ACE inhibition after bare metal stent implantation—results of the VALVACE trial. Int J Cardiol Feb 15 2005;98(2):331–5.
A.J.S. Coats / International Journal of Cardiology 122 (2007) e16–e17 [7] Auer J, Weber T, Berent R, et al. Obesity, body fat and coronary atherosclerosis. Int J Cardiol Feb 15 2005;98(2):227–35. [8] Karatzis E, Papaioannou TG, Aznaouridis K, et al. Acute effects of caffeine on blood pressure and wave reflections in healthy subjects: should we consider monitoring central blood pressure? Int J Cardiol Feb 28 2005;98(3):425–30. [9] Bodi V, Sanchis J, Llacer A, et al. Risk stratification in non-ST elevation acute coronary syndromes: predictive power of troponin I, Creactive protein, fibrinogen and homocysteine. Int J Cardiol Feb 15 2005;98(2):277–83. [10] Kirwan BA, Lubsen J, Poole-Wilson PA, ACTION investigators. Treatment of angina pectoris: associations with symptom severity. Int J Cardiol Feb 15 2005;98(2):299–306. [11] Gatzoulis MA, Rogers P, Li W, et al. Safety and tolerability of Bosentan in adults with Eisenmenger physiology. Int J Cardiol Jan 2005;98(1):147–51. [12] Asselbergs FW, van den Berg MP, Diercks GF, van Gilst WH, van Veldhuisen DJ. C-reactive protein and microalbuminuria are associated with atrial fibrillation. Int J Cardiol Jan 2005;98(1):73–7. [13] Assayag EB, Bornstein N, Shapira I, et al. Inflammation-sensitive proteins and erythrocyte aggregation in atherothrombosis. Int J Cardiol Feb 15 2005;98(2):271–6.
17
[14] Rosso R, Roth A, Herz I, Miller H, Keren G, George J. Serum levels of interleukin-18 in patients with stable and unstable angina pectoris. Int J Cardiol Jan 2005;98(1):45–8. [15] Messin R, Opolski G, Fenyvesi T, et al. Efficacy and safety of molsidomine once-a-day in patients with stable angina pectoris. Int J Cardiol Jan 2005;98(1):79–89. [16] Segev A, Ellis MH, Segev F, et al. High prevalence of thrombophilia among young patients with myocardial infarction and few conventional risk factors. Int J Cardiol Feb 28 2005;98(3):421–4. [17] Boulbou MS, Koukoulis GN, Makri ED, Petinaki EA, Gourgoulianis KI, Germenis AE. Circulating adhesion molecules levels in type 2 diabetes mellitus and hypertension. Int J Cardiol Jan 2005;98(1):39–44. [18] Allison MA, Wright CM. Age and gender are the strongest clinical correlates of prevalent coronary calcification. Int J Cardiol Feb 15 2005;98(2):325–30. [19] Hagerman I, Tyni-Lenne R, Gordon A. Outcome of exercise training on the long-term burden of hospitalisation in patients with chronic heart failure. A retrospective study. Int J Cardiol Feb 28 2005;98(3):487–91. [20] Petersen CL, Kjaer A. Impact of medical treatment on lung diffusion capacity in elderly patients with heart failure. Baseline characteristics and 1-year follow up after medical treatment. Int J Cardiol Feb 28 2005;98(3):453–7.