Published in Proceedings of the 1st ACM International Informatics Symposium (IHI '10) (2010) 46-55.
In the advent of electronic health record (EHR) systems, physicians and
clinical researchers enjoy the ease of storage, retrieval, persistence,
and sharing of patient data. However, the way physicians interact with
EHRs has not changed much. More specifically, task support for temporally
analyzing large number of EHRs has been lacking. A number of information
visualization techniques have been proposed to alleviate this problem.
Unfortunately, due to their limited application to a single case study,
the results are often difficult to generalize across medical scenarios.
In this paper we present the usage data of and user comments on our
information visualization tool Lifelines2 through eight different medical
case studies. We generalize our experience into an information- seeking
process model for multiple EHRs. Base on our analysis, we make
recommendations to future information visualization designers for EHRs on
common design requirements and future research directions.