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Impact simply reflects the ability of journals and editors to attract the best papers available (E.Garfield, Institute for Scientific Information, Philadelphia). Volker Fendrich, MD Editor Assistant, BJS. Impact factor. Citations to recent articles 1784 = 4.092 ( BJS 2006 )
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Impact simply reflects the ability of journals and editors to attract the best papers available (E.Garfield, Institute for Scientific Information, Philadelphia) Volker Fendrich, MD Editor Assistant, BJS
Impact factor • Citations to recent articles1784 = 4.092 (BJS 2006) Number of recent articles 436 • Ability to predict citations is weak (Callaham JAMA 2002) • The IF of the publishing journal determines the number of citations of the article (Callaham JAMA 2002)
Relationship between IF and the level of non-citation within surgical journals 15% of articles account for 50% of citations Weale et al. BMC Med Res Methodol. 2004
Aims • What makes highly cited papers special? • Are there specific differences to Ann Surg? • Is there a way to increase the IF of BJS?
The 50 top cited papers vs the 50 bottom cited (BJS 2000-05)
Topic: TOP or FLOP? • Complications of radiofrequency coagulation of liver tumours • Intra-anal and rectal application of L-erythro methoxamine gel increases anal resting pressure in healthy volunteers • Randomized clinical trial of virtual reality simulation for laparoscopic skills training • Operative mortality after colorectal resection in the Netherlands • Value of POSSUM physiology scoring to assess outcome after intra-arterial thrombolysis for acute leg ischaemia • Prognostic significance of the circumferential resection margin following total mesorectal excision for rectal cancer
Topic: Top or flop? • Complications of radiofrequency coagulation of liver tumours • Intra-anal and rectal application of L-erythro methoxamine gel increases anal resting pressure in healthy volunteers • Randomized clinical trial of virtual reality simulation for laparoscopic skills training • Operative mortality after colorectal resection in the Netherlands • Value of POSSUM physiology scoring to assess outcome after intra-arterial thrombolysis for acute leg ischaemia • Prognostic significance of the circumferential resection margin following total mesorectal excision for rectal cancer
Rising influence of China? Chinese IF 2006: 3.23 (2004-05: 13 articles, 42 citations) Chinese IF 2006: 3.25 (2004-05: 12 articles, 39 citations) Note: Nearly 50% of all publications from Poon et al. University of Hong Kong
How to increase the IF? • Self citations – unethical? (Sevinc 2004) • Online availability (Murali et al 2004) • Online survey to ask for desired topics • Select authors on the basis of past performance