Data mining techniques utilizing latent class models to evaluate emergency department revisits

Ofir Ben-Assuli, Joshua R. Vest

Research output: Contribution to journalArticlepeer-review


Background: The use of machine learning techniques is especially pertinent to the composite and challenging conditions of emergency departments (EDs). Repeat ED visits (i.e. revisits) are an example of potentially inappropriate utilization of resources that can be forecasted by these techniques. Objective: To track the ED revisit risk over time using the hidden Markov model (HMM) as a major latent class model. Given the HMM states, we carried out forecasting of future ED revisits with various data mining models. Methods: Information integrated from four distributed sources (e.g. electronic health records and health information exchange) was integrated into four HMMs which capture the relationships between an observed and a hidden progression that shift over time through a series of hidden states in an adult patient population. Results: Assimilating a pre-analysis of the various patients by applying latent class models and directing them to well-known classifiers functioned well. The performance was significantly better than without utilizing pre-analysis of HMM for all prediction models (classifiers(. Conclusions: These findings suggest that one prospective approach to advanced risk prediction is to leverage the longitudinal nature of health care data by exploiting patients’ between state variation.

Original languageEnglish (US)
Article number103341
JournalJournal of biomedical informatics
StatePublished - Jan 2020


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

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Informatics

Fingerprint Dive into the research topics of 'Data mining techniques utilizing latent class models to evaluate emergency department revisits'. Together they form a unique fingerprint.

Cite this