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We estimate average responses curves for treatment time in the Emergency Department (ED). Extending treatment time is considered a promising solution for improving admission decisions. Providing empirical support for this solution, however,…

Recently, the combination of machine learning (ML) and simulation is gaining a lot of attention. This paper presents a novel application of ML within the simulation to improve patient flow within an emergency department (ED). An ML model…

Computers and Society · Computer Science 2020-12-03 Emad Alenany , Abdessamad Ait El Cadi

Emergency Department (ED) overcrowding continues to be a public health issue as well as a patient safety issue. The underlying factors leading to ED crowding are numerous, varied, and complex. Although lack of in-hospital beds is frequently…

Problem definition: Emergency department (ED) boarding refers to the practice of holding patients in the ED after they have been admitted to hospital wards, usually resulting from insufficient inpatient resources. Boarded patients may…

Optimization and Control · Mathematics 2021-11-17 Shasha Han , Shuangchi He , Hong Choon Oh

Emergency department (ED) crowding has been an increasing problem worldwide. Prior research has identified factors that contribute to ED crowding. However, the relationships between these remain incompletely understood. This study's…

Background: Emergency department (ED) overcrowding remains a major challenge, causing delays in care and increased operational strain. Hospital management often reacts to congestion after it occurs. Machine learning predictive modeling…

Machine Learning · Computer Science 2025-04-29 Orhun Vural , Bunyamin Ozaydin , Khalid Y. Aram , James Booth , Brittany F. Lindsey , Abdulaziz Ahmed

Overcrowding in emergency departments (ED) remains a persistent operational challenge worldwide, causing delays in care delivery and downstream congestion. ED boarding time, defined as the duration admitted patients remain in the ED while…

Machine Learning · Computer Science 2026-05-20 Orhun Vural , Abdulaziz Ahmed , Ferhat Zengul , James Booth , Bunyamin Ozaydin

Accurately predicting hospital length-of-stay at the time a patient is admitted to hospital may help guide clinical decision making and resource allocation. In this study we aim to build a decision support system that predicts hospital…

Artificial Intelligence · Computer Science 2023-08-08 Mucahit Cevik , Can Kavaklioglu , Fahad Razak , Amol Verma , Ayse Basar

In this paper, we study pooling downstream beds across specialties in a stochastic operating room planning problem. The main sources of uncertainty are stochastic surgical durations and patients' lengths of stay. We developed a two-stage…

Optimization and Control · Mathematics 2026-02-18 Arian Andam , Hossein Hashemi Doulabi

Emergency departments (EDs) often use a shared-queue setup in which physicians self-assign cases from a pool of triaged patients. We conduct a multi-method study to examine this self-assignment behavior and its effects on system…

General Economics · Economics 2026-05-26 Brett Hathaway , Evgeny Kagan , John Jones

Emergency department (ED) care for frail elderly patients is associated with an increased use of resources due to their complex medical needs and frequently difficult psycho-social situation. To better target their needs with specially…

Applications · Statistics 2019-06-14 Jens Rauch , Mathias Denter , Ursula Hübner

Study Objective: To analyze the factors influencing Emergency Department (ED) overcrowding by examining the impacts of operational, environmental, and external variables, including weather conditions and football games. Methods: This study…

Computers and Society · Computer Science 2025-05-13 Abdulaziz Ahmed , Khalid Y Aram , Mohammed Alzeen , Orhun Vural , James Booth , Brittany F. Lindsey , Bunyamin Ozaydin

Optimization of patient throughput and wait time in emergency departments (ED) is an important task for hospital systems. For that reason, Emergency Severity Index (ESI) system for patient triage was introduced to help guide manual…

Computers and Society · Computer Science 2018-04-11 Djordje Gligorijevic , Jelena Stojanovic , Wayne Satz , Ivan Stojkovic , Kathrin Schreyer , Daniel Del Portal , Zoran Obradovic

Measuring the effect of patient safety improvement efforts is needed to determine their value but is difficult due to the inherent complexities of hospital operations. In this paper, we show by case study how interrupted time series design…

Applications · Statistics 2018-06-28 Diego A. Martinez , Mehdi Jalalpour , David T. Efron , Scott R. Levin

Environments such as shopping malls, airports, or hospital emergency departments often experience crowding, with many people simultaneously requesting service. Crowding is highly noisy, with sudden overcrowding "spikes". Past research has…

Physics and Society · Physics 2023-08-16 Gil Parnass , Osnat Levtzion-Korach , Renana Peres , Michael Assaf

Objective: To describe the association of demographic factors with triage acuity, hospital admission rates, and length of stay (LOS) for adult patients in the emergency department (ED). Methods: We performed a retrospective cross-sectional…

Over the past decade the rate of care unit (CU) use in the United States has been increasing. With an aging population and ever-growing demand for medical care, effective management of patients' transitions among different care facilities…

Machine Learning · Computer Science 2016-11-11 Hongteng Xu , Weichang Wu , Shamim Nemati , Hongyuan Zha

For a large portion of mental health patients, the Emergency Department is the first point of contact when in crisis and in need of urgent acute care. Unfortunately, those who have already received an admission disposition may wait hours or…

Applications · Statistics 2023-04-28 Nathan O. Adeyemi , Kayse Lee Maass , Amanda M. Graham , Kalyan S. Pasupathy

Most of the studies dealing with the increasing and well-known problem of Emergency Department (ED) overcrowding usually mainly focus on modeling the patient flow within a single ED, without considering the possibilities offered by the…

Optimization and Control · Mathematics 2021-08-10 Christian Piermarini , Massimo Roma

Emergency department (ED) overcrowding and patient boarding represent critical systemic challenges that compromise care quality. We propose a threshold-based admission policy that redirects non-urgent patients to alternative care pathways,…

Performance · Computer Science 2026-01-16 Sahba Baniasadi , Paul M. Griffin , Prakash Chakraborty
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