| Titre : | Empirical analysis of ambulance travel times : The case of calgary emergency medical services (2010) |
| Auteurs : | Susan Budge, Auteur ; Armann Ingolfsson, Auteur ; Dawit Zerom, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Management science (Vol. 56 N° 4, Avril 2010) |
| Article en page(s) : | pp. 716-723 |
| Note générale : | Management |
| Langues : | Anglais |
| Index. décimale : | 658 (Organisation des entreprises. Techniques du commerce) |
| Tags : | Ambulance service Probability-of-coverage map Nonparametric Travel |
| Résumé : | Using administrative data for high-priority calls in Calgary, Alberta, we estimate how ambulance travel times depend on distance. We find that a logarithmic transformation produces symmetric travel-time distributions with heavier tails than those of a normal distribution. Guided by nonparametric estimates of the median and coefficient of variation, we demonstrate that a previously proposed model for mean fire engine travel times is a valid and useful description of median ambulance travel times. We propose a new specification for the coefficient of variation, which decreases with distance. We illustrate how the resulting travel-time distribution model can be used to create probability-of-coverage maps for diagnosis and improvement of system performance. |
| DEWEY : | 658 |
| ISSN : | 0025-1909 |
| En ligne : | http://mansci.journal.informs.org/content/56/4.toc |
