Modelling and optimization of outpatient appointment scheduling

Mahmoud H. Alrefaei, Ali Diabat

    Research output: Contribution to journalArticle

    Abstract

    We consider the problem of appointment scheduling for outpatient departments in health care systems. The objective is to design an appointment system that minimizes the average waiting time per patient, while at the same time ensuring the effective use of resources, by maximizing doctor utilization and minimizing the average number of patients in the clinic. We model the appointment system problem as a multi-objective optimization problem with three objectives. Several new alternative appointment systems are considered, and the new systems are modelled and simulated using the software Arena. Subsequently, a new version of ranking and selection approaches is used to compare the alternative systems, by constructing a set of Pareto optimal solutions that consists of non-dominated systems with a predetermined level of confidence. Finally, we present the numerical results obtained by implementing the proposed procedure on an outpatient clinic, taking into account the no-show patients as well as the walk-in patients.

    Original languageEnglish (US)
    Pages (from-to)435-450
    Number of pages16
    JournalRAIRO - Operations Research
    Volume49
    Issue number3
    DOIs
    StatePublished - Jan 1 2015

    Fingerprint

    Multiobjective optimization
    Health care
    Scheduling
    Optimization
    Modeling
    Ranking and Selection
    Pareto Optimal Solution
    Alternatives
    Multiobjective Optimization Problems
    Appointment scheduling
    Outpatient
    Waiting Time
    Walk
    Healthcare
    Confidence
    Minimise
    Numerical Results
    Resources
    Software

    Keywords

    • Appointment system
    • Multi-objective optimization
    • Ranking and selection

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • Computer Science Applications
    • Management Science and Operations Research

    Cite this

    Modelling and optimization of outpatient appointment scheduling. / Alrefaei, Mahmoud H.; Diabat, Ali.

    In: RAIRO - Operations Research, Vol. 49, No. 3, 01.01.2015, p. 435-450.

    Research output: Contribution to journalArticle

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