Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day

Abstract Background Accessibility to community pharmacies is crucial for ensuring timely access to medications and essential health services. While accessibility to community pharmacies is critical, disparities driven by temporal and spatial factors persist, resulting in inequities in healthcare acc...

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Main Authors: Cláudia M. Viana, Luis Encalada-Abarca, Jorge Rocha, David S. Vale
Format: Article
Language:English
Published: BMC 2025-05-01
Series:International Journal of Health Geographics
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Online Access:https://doi.org/10.1186/s12942-025-00396-9
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author Cláudia M. Viana
Luis Encalada-Abarca
Jorge Rocha
David S. Vale
author_facet Cláudia M. Viana
Luis Encalada-Abarca
Jorge Rocha
David S. Vale
author_sort Cláudia M. Viana
collection DOAJ
description Abstract Background Accessibility to community pharmacies is crucial for ensuring timely access to medications and essential health services. While accessibility to community pharmacies is critical, disparities driven by temporal and spatial factors persist, resulting in inequities in healthcare access. This study aims to comprehensively assess spatiotemporal and multimodal accessibility to community pharmacies in Lisbon, highlighting the influence of transport modes and time of day on accessibility disparities. Data and methods The study employed a methodology that considered five daily time slots and two modes of transport—walking and public transport—to evaluate accessibility to community pharmacies. Data was sourced from road and pedestrian networks, Google API, and GTFS data. Descriptive statistics and spatial analysis were utilized to assess travel time and accessibility disparities across different regions of Lisbon. The analysis focused on both the percentage of residents able to access pharmacies within 10 min and the total number of pharmacies accessible. Results ndings reveal significant temporal variations in accessibility, with public transport consistently improving access compared to walking. Accessibility peaks in the evening (6–7 PM), when 83.3% of residential buildings are within a 10-min walking distance of a pharmacy, and 92.7% are reachable by public transport. In contrast, early morning hours (4–5 AM) show the lowest accessibility, with only 8.9% of buildings accessible by walking and 16.1% by public transport. During the daytime (8–9 AM), notable disparities emerge across the city: public transport enhances access in the southwest, northwest, and central areas, while limited pharmacy opening hours constrain accessibility in the north and southeast, where only 108 of 258 pharmacies are operational. Finally, travel time to pharmacy services for city residents highlight significant spatial and temporal disparities in pharmacy accessibility, emphasizing the role of transport modes and service hours in shaping urban healthcare access. Conclusions This study underscores the importance of addressing both temporal and spatial factors to ensure equitable accessibility to community pharmacies. The findings suggest the need for targeted policies to improve public transport services during off-peak hours and to extend pharmacy operating hours. Future research should focus on comparative studies across different urban contexts and incorporate more granular data to better understand accessibility to urban services.
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spelling doaj-art-6fbfc2783d4b483fb711161e44d065202025-08-20T01:49:40ZengBMCInternational Journal of Health Geographics1476-072X2025-05-0124111510.1186/s12942-025-00396-9Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the dayCláudia M. Viana0Luis Encalada-Abarca1Jorge Rocha2David S. Vale3Centre of Geographical Studies, Institute of Geography and Spatial Planning, Universidade de Lisboa. Rua Branca Edmée MarquesCentre of Geographical Studies, Institute of Geography and Spatial Planning, Universidade de Lisboa. Rua Branca Edmée MarquesCentre of Geographical Studies, Institute of Geography and Spatial Planning, Universidade de Lisboa. Rua Branca Edmée MarquesCIAUD, Lisbon School of Architecture, Universidade de Lisboa. R. Sá NogueiraAbstract Background Accessibility to community pharmacies is crucial for ensuring timely access to medications and essential health services. While accessibility to community pharmacies is critical, disparities driven by temporal and spatial factors persist, resulting in inequities in healthcare access. This study aims to comprehensively assess spatiotemporal and multimodal accessibility to community pharmacies in Lisbon, highlighting the influence of transport modes and time of day on accessibility disparities. Data and methods The study employed a methodology that considered five daily time slots and two modes of transport—walking and public transport—to evaluate accessibility to community pharmacies. Data was sourced from road and pedestrian networks, Google API, and GTFS data. Descriptive statistics and spatial analysis were utilized to assess travel time and accessibility disparities across different regions of Lisbon. The analysis focused on both the percentage of residents able to access pharmacies within 10 min and the total number of pharmacies accessible. Results ndings reveal significant temporal variations in accessibility, with public transport consistently improving access compared to walking. Accessibility peaks in the evening (6–7 PM), when 83.3% of residential buildings are within a 10-min walking distance of a pharmacy, and 92.7% are reachable by public transport. In contrast, early morning hours (4–5 AM) show the lowest accessibility, with only 8.9% of buildings accessible by walking and 16.1% by public transport. During the daytime (8–9 AM), notable disparities emerge across the city: public transport enhances access in the southwest, northwest, and central areas, while limited pharmacy opening hours constrain accessibility in the north and southeast, where only 108 of 258 pharmacies are operational. Finally, travel time to pharmacy services for city residents highlight significant spatial and temporal disparities in pharmacy accessibility, emphasizing the role of transport modes and service hours in shaping urban healthcare access. Conclusions This study underscores the importance of addressing both temporal and spatial factors to ensure equitable accessibility to community pharmacies. The findings suggest the need for targeted policies to improve public transport services during off-peak hours and to extend pharmacy operating hours. Future research should focus on comparative studies across different urban contexts and incorporate more granular data to better understand accessibility to urban services.https://doi.org/10.1186/s12942-025-00396-9Multimodal accessibilitySpatial equityTravel timesPublic transport supplyGTFS
spellingShingle Cláudia M. Viana
Luis Encalada-Abarca
Jorge Rocha
David S. Vale
Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day
International Journal of Health Geographics
Multimodal accessibility
Spatial equity
Travel times
Public transport supply
GTFS
title Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day
title_full Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day
title_fullStr Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day
title_full_unstemmed Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day
title_short Identifying pharmacy gaps: a spatiotemporal study of multimodal accessibility throughout the day
title_sort identifying pharmacy gaps a spatiotemporal study of multimodal accessibility throughout the day
topic Multimodal accessibility
Spatial equity
Travel times
Public transport supply
GTFS
url https://doi.org/10.1186/s12942-025-00396-9
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