Comparing population and incident data for optimal air ambulance base locations in Norway
Background: Helicopter emergency medical services are important in many health care systems. Norway has a nationwide physician manned air ambulance service servicing a country with large geographical variations in population density and incident frequencies. The aim of the study was to compare optim...
Published in: | Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine |
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fttudelft:oai:tudelft.nl:uuid:1c4d9073-042e-4512-a404-8659cc889837 2024-04-28T08:32:29+00:00 Comparing population and incident data for optimal air ambulance base locations in Norway Røislien, Jo (author) van den Berg, Pieter L. (author) Lindner, Thomas (author) Zakariassen, Erik (author) Uleberg, Oddvar (author) Aardal, K.I. (author) van Essen, J.T. (author) 2018 http://resolver.tudelft.nl/uuid:1c4d9073-042e-4512-a404-8659cc889837 https://doi.org/10.1186/s13049-018-0511-4 en eng http://www.scopus.com/inward/record.url?scp=85047493144&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:1c4d9073-042e-4512-a404-8659cc889837 Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine--4487c3a4-562d-4a3a-8125-e94bf844a053 https://doi.org/10.1186/s13049-018-0511-4 © 2018 Jo Røislien, Pieter L. van den Berg, Thomas Lindner, Erik Zakariassen, Oddvar Uleberg, K.I. Aardal, J.T. van Essen Air ambulance Coverage Facility location problem HEMS Incidents MCLP Population density journal article 2018 fttudelft https://doi.org/10.1186/s13049-018-0511-4 2024-04-09T23:41:36Z Background: Helicopter emergency medical services are important in many health care systems. Norway has a nationwide physician manned air ambulance service servicing a country with large geographical variations in population density and incident frequencies. The aim of the study was to compare optimal air ambulance base locations using both population and incident data. Methods: We used municipality population and incident data for Norway from 2015. The 428 municipalities had a median (5-95 percentile) of 4675 (940-36,264) inhabitants and 10 (2-38) incidents. Optimal helicopter base locations were estimated using the Maximal Covering Location Problem (MCLP) optimization model, exploring the number and location of bases needed to cover various fractions of the population for time thresholds 30 and 45 min, in green field scenarios and conditioned on the existing base structure. Results: The existing bases covered 96.90% of the population and 91.86% of the incidents for time threshold 45 min. Correlation between municipality population and incident frequencies was -0.0027, and optimal base locations varied markedly between the two data types, particularly when lowering the target time. The optimal solution using population density data put focus on the greater Oslo area, where one third of Norwegians live, while using incident data put focus on low population high incident areas, such as northern Norway and winter sport resorts. Conclusion: Using population density data as a proxy for incident frequency is not recommended, as the two data types lead to different optimal base locations. Lowering the target time increases the sensitivity to choice of data. Discrete Mathematics and Optimization Article in Journal/Newspaper Northern Norway Delft University of Technology: Institutional Repository Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine 26 1 |
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Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
Air ambulance Coverage Facility location problem HEMS Incidents MCLP Population density |
spellingShingle |
Air ambulance Coverage Facility location problem HEMS Incidents MCLP Population density Røislien, Jo (author) van den Berg, Pieter L. (author) Lindner, Thomas (author) Zakariassen, Erik (author) Uleberg, Oddvar (author) Aardal, K.I. (author) van Essen, J.T. (author) Comparing population and incident data for optimal air ambulance base locations in Norway |
topic_facet |
Air ambulance Coverage Facility location problem HEMS Incidents MCLP Population density |
description |
Background: Helicopter emergency medical services are important in many health care systems. Norway has a nationwide physician manned air ambulance service servicing a country with large geographical variations in population density and incident frequencies. The aim of the study was to compare optimal air ambulance base locations using both population and incident data. Methods: We used municipality population and incident data for Norway from 2015. The 428 municipalities had a median (5-95 percentile) of 4675 (940-36,264) inhabitants and 10 (2-38) incidents. Optimal helicopter base locations were estimated using the Maximal Covering Location Problem (MCLP) optimization model, exploring the number and location of bases needed to cover various fractions of the population for time thresholds 30 and 45 min, in green field scenarios and conditioned on the existing base structure. Results: The existing bases covered 96.90% of the population and 91.86% of the incidents for time threshold 45 min. Correlation between municipality population and incident frequencies was -0.0027, and optimal base locations varied markedly between the two data types, particularly when lowering the target time. The optimal solution using population density data put focus on the greater Oslo area, where one third of Norwegians live, while using incident data put focus on low population high incident areas, such as northern Norway and winter sport resorts. Conclusion: Using population density data as a proxy for incident frequency is not recommended, as the two data types lead to different optimal base locations. Lowering the target time increases the sensitivity to choice of data. Discrete Mathematics and Optimization |
format |
Article in Journal/Newspaper |
author |
Røislien, Jo (author) van den Berg, Pieter L. (author) Lindner, Thomas (author) Zakariassen, Erik (author) Uleberg, Oddvar (author) Aardal, K.I. (author) van Essen, J.T. (author) |
author_facet |
Røislien, Jo (author) van den Berg, Pieter L. (author) Lindner, Thomas (author) Zakariassen, Erik (author) Uleberg, Oddvar (author) Aardal, K.I. (author) van Essen, J.T. (author) |
author_sort |
Røislien, Jo (author) |
title |
Comparing population and incident data for optimal air ambulance base locations in Norway |
title_short |
Comparing population and incident data for optimal air ambulance base locations in Norway |
title_full |
Comparing population and incident data for optimal air ambulance base locations in Norway |
title_fullStr |
Comparing population and incident data for optimal air ambulance base locations in Norway |
title_full_unstemmed |
Comparing population and incident data for optimal air ambulance base locations in Norway |
title_sort |
comparing population and incident data for optimal air ambulance base locations in norway |
publishDate |
2018 |
url |
http://resolver.tudelft.nl/uuid:1c4d9073-042e-4512-a404-8659cc889837 https://doi.org/10.1186/s13049-018-0511-4 |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_relation |
http://www.scopus.com/inward/record.url?scp=85047493144&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:1c4d9073-042e-4512-a404-8659cc889837 Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine--4487c3a4-562d-4a3a-8125-e94bf844a053 https://doi.org/10.1186/s13049-018-0511-4 |
op_rights |
© 2018 Jo Røislien, Pieter L. van den Berg, Thomas Lindner, Erik Zakariassen, Oddvar Uleberg, K.I. Aardal, J.T. van Essen |
op_doi |
https://doi.org/10.1186/s13049-018-0511-4 |
container_title |
Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine |
container_volume |
26 |
container_issue |
1 |
_version_ |
1797589668024287232 |