• Zhi Li, Yu-Ming Sun, Fei-Xiang Wu, Li-Qun Yang, Zhi-Jie Lu, and Wei-Feng Yu.
• Department of Anaesthesiology, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China.
• Plos One. 2013 Jan 1;8(8):e71430.

BackgroundThe practice of giving certain authors equal credit in original research publications was increasingly common in some specialty. This study aimed to investigate the prevalence and characteristics of designating some authors with equally credited authors (ECAs) in major anaesthesia journals.Methodology/Principal FindingsThe practice of giving authors equal credit was searched and identified in the three major anaesthesia journals between January 1, 2002 and December 31, 2011. Papers with ECAs had a higher proportion of the total number of articles in 2011 versus published in 2002 (Anesthesiology, 8.8% vs. 0.9%; British Journal of Anaesthesia, 8.8% vs. 0%; Anesthesia & Analgesia, 3.4% vs. 0.3%; totally, 6.4% vs. 0.4%). A significant increasing trend in annual proportion of articles with ECA was found in the three journals. The first two authors listed in the byline had equal credit in most cases.Conclusions/SignificanceThe practice of giving authors equal credit in original research papers is increasingly common in major anaesthesia journals. It may be warranted for the journals to guide the authors how to regard this practice.

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