ED revisits forecasting: Utilizing latent models

Ofir Ben-Assuli, Joshua R. Vest

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The potential impact of prediction methods is particularly relevant to emergency department (ED) settings which are characterized by complex and challenging conditions. Repeat ED visits are one such example of potential over-utilization over a longitudinal period that can in some cases be predicted. We tracked the ED revisit risk over time using a hidden Markov model (HMM) based on adult ED ten years encounters at a single US urban hospital. Given the HMM states, we performed prediction for future ED revisits. We applied Decision Jungle Trees and Logistic Regression prediction models. The data were combined from distributed sources (e.g. EHRs and HIE). The results show that integrating a pre-analysis of the diverse patients using latent class models and applying them to predictive classifiers performed well. The performance was better than without using pre-analysis of HMM. These findings suggest that one potential approach to improved risk prediction is to leverage the longitudinal nature of health care delivery.

Original languageEnglish (US)
Title of host publicationIntelligent Systems and Applications - Proceedings of the 2019 Intelligent Systems Conference IntelliSys Volume 2
EditorsYaxin Bi, Rahul Bhatia, Supriya Kapoor
PublisherSpringer Verlag
Number of pages7
ISBN (Print)9783030295127
StatePublished - Jan 1 2020
EventIntelligent Systems Conference, IntelliSys 2019 - London, United Kingdom
Duration: Sep 5 2019Sep 6 2019

Publication series

NameAdvances in Intelligent Systems and Computing
ISSN (Print)2194-5357
ISSN (Electronic)2194-5365


ConferenceIntelligent Systems Conference, IntelliSys 2019
CountryUnited Kingdom


  • Electronic health records
  • Emergency department
  • Health information exchange
  • Hidden Markov Models
  • Predictive analytics
  • Revisit

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science(all)

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  • Cite this

    Ben-Assuli, O., & Vest, J. R. (2020). ED revisits forecasting: Utilizing latent models. In Y. Bi, R. Bhatia, & S. Kapoor (Eds.), Intelligent Systems and Applications - Proceedings of the 2019 Intelligent Systems Conference IntelliSys Volume 2 (pp. 696-702). (Advances in Intelligent Systems and Computing; Vol. 1038). Springer Verlag. https://doi.org/10.1007/978-3-030-29513-4_52