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Calculating real-world travel routes instead of straight-line distance in the community response to out-of-hospital cardiac arrest
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Smith, Christopher Matthew, Lall, Ranjit, Spaight, Robert, Fothergill, Rachael T., Brown, Terry and Perkins, Gavin D. (2021) Calculating real-world travel routes instead of straight-line distance in the community response to out-of-hospital cardiac arrest. Resuscitation Plus, 8 . 100176. doi:10.1016/j.resplu.2021.100176 ISSN 2666-5204.
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WRAP-calculating-real-world-travel-routes-instead-straight-line-distance-community-response-out-of-hospital-cardiac-arrest-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2993Kb) | Preview |
Official URL: https://doi.org/10.1016/j.resplu.2021.100176
Abstract
Using straight-line distance to estimate the proximity of public-access Automated External Defibrillators (AEDs) or volunteer first-responders to potential out-of-hospital cardiac arrests (OHCAs) does not reflect real-world travel distance. The difference between estimates may be an important consideration for bystanders and first-responders responding to OHCAs and may potentially impact patient outcome. To explore how calculating real-world travel routes instead of using straight-line distance estimates might impact the community response to OHCA. We mapped 4355 OHCA (01/04/2016-31/03/2017) and 2677 AEDs in London (UK), and 1263 OHCA (18/06/2017-17/06/2018) and 4704 AEDs in East Midlands (UK) using ArcGIS mapping software. We determined the distance from OHCAs to the nearest AED using straight-line estimates and real-world travel routes. We mapped locations of potential OHCAs (London: n = 9065, 20/09/2019-22/03/2020; East Midlands: n = 7637, 20/09/2019-17/03/2020) for which volunteer first-responders were alerted by the GoodSAM mobile-phone app, and calculated response distance using straight-line estimates and real-world travel routes. We created Receiver Operating Characteristic (ROC) curves and calculated the Area Under the Curve (AUC) to determine if travel distance predicted whether or not a responder accepted an alert. Real-world travel routes to the nearest AED were (median) 219 m longer (623 m vs 406 m) than straight-line estimates in London, and 211 m longer (568 m vs 357 m) in East Midlands. The identity of the nearest AED changed on 26% occasions in both areas when calculating real-world travel routes. GoodSAM responders' real-world travel routes were (median) 222 m longer (601 m vs 379 m) in London, and 291 m longer (814 m vs 523 m) in East Midlands. AUC statistics for both areas demonstrated that neither straight-line nor real-world travel distance predicted whether or not a responder accepted an alert. Calculating real-world travel routes increases the estimated travel distance and time for those responding to OHCAs. Calculating straight-line distance may overestimate the benefit of the community response to OHCA.
| Item Type: | Journal Article | ||||||||
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| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) H Social Sciences > HV Social pathology. Social and public welfare R Medicine > R Medicine (General) R Medicine > RC Internal medicine |
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| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Clinical Trials Unit Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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| SWORD Depositor: | Library Publications Router | ||||||||
| Library of Congress Subject Headings (LCSH): | Cardiac arrest -- Treatment, First responders , Defibrillators, Assistance in emergencies, Bystander effect -- Health aspects, Geographic information systems -- Health aspects, CPR (First aid) | ||||||||
| Journal or Publication Title: | Resuscitation Plus | ||||||||
| Publisher: | Elsevier | ||||||||
| ISSN: | 2666-5204 | ||||||||
| Official Date: | December 2021 | ||||||||
| Dates: |
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| Volume: | 8 | ||||||||
| Article Number: | 100176 | ||||||||
| DOI: | 10.1016/j.resplu.2021.100176 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 15 December 2021 | ||||||||
| Date of first compliant Open Access: | 16 December 2021 | ||||||||
| RIOXX Funder/Project Grant: |
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