Spatiotemporal access to emergency medical services in Wuhan, China: accounting for scene and transport time intervals

Yao, J. , Luo, W., Mitchell, R. and Zhang, X. (2020) Spatiotemporal access to emergency medical services in Wuhan, China: accounting for scene and transport time intervals. International Journal of Health Geographics, 19, 52. (doi: 10.1186/s12942-020-00249-7) (PMID:33243272) (PMCID:PMC7689650)

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Background: Access as a primary indicator of Emergency Medical Service (EMS) efficiency has been widely studied over the last few decades. Most previous studies considered one-way trips, either getting ambulances to patients or transporting patients to hospitals. This research assesses spatiotemporal access to EMS at the shequ (the smallest administrative unit) level in Wuhan, China, attempting to fill a gap in literature by considering and comparing both trips in the evaluation of EMS access. Methods: Two spatiotemporal access measures are adopted here: the proximity-based travel time obtained from online map services and the enhanced two-step floating catchment area (E-2SFCA) which is a gravity-based model. First, the travel time is calculated for the two trips involved in one EMS journey: one is from the nearest EMS station to the scene (i.e. scene time interval (STI)) and the other is from the scene to the nearest hospital (i.e. transport time interval (TTI)). Then, the predicted travel time is incorporated into the E-2SFCA model to calculate the access measure considering the availability of the service provider as well as the population in need. For both access measures, the calculation is implemented for peak hours and off-peak hours. Results: Both methods showed a marked decrease in EMS access during peak traffic hours, and differences in spatial patterns of ambulance and hospital access. About 73.9% of shequs can receive an ambulance or get to the nearest hospital within 10 min during off-peak periods, and this proportion decreases to about 45.5% for peak periods. Most shequs with good ambulance access but poor hospital access are in the south of the study area. In general, the central areas have better ambulance, hospital and overall access than peripheral areas, particularly during off-peak periods. Conclusions: In addition to the impact of peak traffic periods on EMS access, we found that good ambulance access does not necessarily guarantee good hospital access nor the overall access, and vice versa.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Luo, Weicong and Zhang, Dr Xiaoxiang and Mitchell, Professor Rich and Yao, Dr Jing
Authors: Yao, J., Luo, W., Mitchell, R., and Zhang, X.
College/School:College of Medical Veterinary and Life Sciences > School of Health & Wellbeing > MRC/CSO SPHSU
College of Social Sciences > School of Social and Political Sciences > Urban Studies
Journal Name:International Journal of Health Geographics
Publisher:BioMed Central
ISSN (Online):1476-072X
Copyright Holders:Copyright © The Author(s) 2020.
First Published:First published in International Journal of Health Geographics 19:52
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
300882GCRF Centre for Sustainable, Healthy, and Learning Cities and Neighbourhoods (CSHLH)Ya Ping WangEconomic and Social Research Council (ESRC)ES/P011020/1S&PS - Urban Studies
727621SPHSU Core Renewal: Neighbourhoods and Communities Research ProgrammeAnne EllawayMedical Research Council (MRC)MC_UU_12017/10IHW - MRC/CSO SPHU
Chief Scientist Office (CSO)SPHSU10