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Barack Obama¡¯s research on US healthcare reform ¨C the first academic article to be published by a sitting US president ¨C has topped a list of the most popular online papers of the year.

The article, ¡°United States health care reform: progress to date and next steps¡±, published in the Journal of the American Medical Association in July, took pole position in a top 100 list compiled by Altmetric, a London start-up that tracks and analyses the online activity around scholarly literature.

The paper from the outgoing US president resulted in the highest Altmetric ¡°attention score¡± ever tracked, 8,063, compared with a score of 4,912 for the second-most popular article.

The term ¡°altmetrics¡± describes the practice of rating papers using ¡°alternative metrics¡±, such as mentions on social media networking sites, rather than, for example, citations in other journals.

Other research that caught the public¡¯s attention in 2016 includes an article on medical errors being the third leading cause of death in the US (second), a paper on mastering the board game Go (ninth), and a report finding that the ease with which we tell lies grows with repetition (18th).

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The full top 100 list, along with more information about the methodology, is available at .

ellie.bothwell@tesglobal.com