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Ambulance location for maximum survival
Author(s) -
Erkut Erhan,
Ingolfsson Armann,
Erdoğan Güneş
Publication year - 2008
Publication title -
naval research logistics (nrl)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 68
eISSN - 1520-6750
pISSN - 0894-069X
DOI - 10.1002/nav.20267
Subject(s) - survival function , monotonic function , outcome (game theory) , function (biology) , service (business) , computer science , survival analysis , emergency medical services , location model , overall survival , operations research , statistics , medicine , medical emergency , business , mathematics , mathematical analysis , mathematical economics , marketing , evolutionary biology , biology
This article proposes new location models for emergency medical service stations. The models are generated by incorporating a survival function into existing covering models. A survival function is a monotonically decreasing function of the response time of an emergency medical service (EMS) vehicle to a patient that returns the probability of survival for the patient. The survival function allows for the calculation of tangible outcome measures—the expected number of survivors in case of cardiac arrests. The survival‐maximizing location models are better suited for EMS location than the covering models which do not adequately differentiate between consequences of different response times. We demonstrate empirically the superiority of the survival‐maximizing models using data from the Edmonton EMS system. © 2007 Wiley Periodicals, Inc. Naval Research Logistics, 2008