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Background  The application of artificial intelligence techniques for processing electronic health records data plays increasingly significant role in advancing clinical decision support. This study conducts a quantitative comparison on the research of utilizing artificial intelligence on electronic health records between the USA and China to discovery their research similarities and differences.    Methods  Publications from both Web of Science and PubMed are retrieved to explore the research status and academic performances of the two countries quantitatively. Bibliometrics, geographic visualization, collaboration degree calculation, social network analysis, latent dirichlet allocation, and affinity propagation clustering are applied to analyze research quantity, collaboration relations, and hot research topics.    Results  There are 1031 publications from the USA and 173 publications from China during 2008–2017 period. The annual numbers of publications from the USA and China increase polynomially.  JAMIA  with 135 publications and  JBI  with 13 publications are the top prolific journals for the USA and China, respectively.  Harvard University  with 101 publications and  Zhejiang University  with 12 publications are the top prolific affiliations for the USA and China, respectively.  Massachusetts  is the most prolific region with 211 publications for the USA, while for China,  Taiwan  is the top 1 with 47 publications. China has relatively higher institutional and international collaborations. Nine main research areas for the USA are identified, differentiating 7 for China.    Conclusions  There is a steadily growing presence and increasing visibility of utilizing artificial intelligence on electronic health records for the USA and China over the years. The results of the study demonstrate the research similarities and differences, as well as strengths and weaknesses of the two countries.

A comparative quantitative study of utilizing artificial intelligence on electronic health records in the USA and China during 2008–2017