  Citation network analysis has become one of methods to study how scientific
knowledge flows from one domain to another. Health informatics is a
multidisciplinary field that includes social science, software engineering,
behavioral science, medical science and others. In this study, we perform an
analysis of citation statistics from health informatics journals using data set
extracted from CrossRef. For each health informatics journal, we extract the
number of citations from/to studies related to computer science,
medicine/clinical medicine and other fields, including the number of
self-citations from the health informatics journal. With a similar number of
articles used in our analysis, we show that the Journal of the American Medical
Informatics Association (JAMIA) has more in-citations than the Journal of
Medical Internet Research (JMIR); while JMIR has a higher number of
out-citations and self-citations. We also show that JMIR cites more articles
from health informatics journals and medicine related journals. In addition,
the Journal of Medical Systems (JMS) cites more articles from computer science
journals compared with other health informatics journals included in our
analysis.
