A complexity-based measure for emergency department crowding

Enayon Sunday Taiwo*, Farzad Zaerpour, Mozart B.C. Menezes, Zhankun Sun

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

1 Citation (Scopus)

Abstract

Purpose -  Overcrowding continues to afflict emergency departments (EDs), and its attendant consequences are becoming increasingly severe. The burden of the COVID-19 pandemic is further escalating the situation worldwide. One of the most critical questions is how to adequately quantify what constitutes overcrowding and determine implications for operations management in improving service efficiency. This paper aims to discuss the aforementioned.

Design/methodology/approach - The authors propose the time and class complexity measures for ED service systems, taking into account important patient-level and system characteristics. Using an extensive data set from a Canadian ED, the authors investigate the performance of complexity-based measures in predicting service delays.

Findings - The authors find that the complexity measure is potentially more important than some well-known crowding metrics. In particular, EDs can improve service efficiency by managing the level of complexity within a desirable interval. Furthermore, complexity exposes how the interplay between demand-side behavioral changes and supply-side responses affects operational performance. Moreover, the results suggest that arrival patterns—the number of patients of each class arriving per time and times between events (arrivals and service completions)—increase the risk of service delays more than the demand volume.

Originality/value - This paper is the first to provide an extensive investigation into the application of the complexity-based measure for ED crowding. The study demonstrates potential values to be gained in ED service systems if complexity measure is incorporated into their operations management decisions.

© 2023, Emerald Publishing Limited.
Original languageEnglish
Pages (from-to)768-789
JournalInternational Journal of Operations and Production Management
Volume44
Issue number4
Online published11 Sept 2023
DOIs
Publication statusPublished - 2024

Research Keywords

  • Complexity
  • Crowding
  • Emergency departments
  • Healthcare

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