Evaluation of Public Transport-Based Accessibility to Health Facilities considering Spatial Heterogeneity

Zhang, Yuliang; Li, Wenxiang; Deng, Haopeng; Li, Ye

doi:10.1155/2020/7645153

Cited by 28 publications

(22 citation statements)

References 29 publications

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“…Our research focuses on the car-based accessibility now, but not all residents own a private car or travel to healthcare facilities by car. Other traveling modes (e.g., public transit) also play important roles in traveling behaviors to seek healthcare service [40]. Based on the smart card data of bus and subway, the influence of the public transport modes on the available opportunity number of residents can be studied by calculating the accessibility within the time threshold.…”

Section: Discussionmentioning

confidence: 99%

GPS Trajectory-Based Spatio-Temporal Variations of Traffic Accessibility under Public Health Emergency Consideration

Dong

Liu

Sun

et al. 2021

Journal of Advanced Transportation

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Medical services are essential to public concerns and living qualities. Facing new public health events, the spatio-temporal variation of healthcare accessibility can be different, which is ignored in the previous accessibility studies. In this paper, we study the spatio-temporal variation of healthcare accessibility and residents’ accessibility to the designated hospitals under public health emergencies such as COVID-19. Metropolitan Beijing is chosen as the study area. Then, we analyze the spatial disparity and the temporal variation and measure the matching degree between healthcare accessibility and population density. From the perspective of epidemic prevention, we evaluate the medical capacity of the designated hospitals. The autocorrelation method is used to analyze the spatial correlation of residents’ accessibility to designated hospitals in the study area. A conclusion can be drawn that 74.14% grids in the study area have proportionate population density and healthcare accessibility. We find that the 5th Medical Center has sufficient medical resources, and Puren hospital is less affected by time. Moreover, the result of residents’ accessibility to the designated hospitals presents a pattern of high-value aggregation in the arterial road neighborhood. At the same time, the peripheral areas show a trend of low-value aggregation. The research in healthcare accessibility can provide a reference for policymakers in medical service development and public emergency management.

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Section: Discussionmentioning

confidence: 99%

GPS Trajectory-Based Spatio-Temporal Variations of Traffic Accessibility under Public Health Emergency Consideration

Dong

Liu

Sun

et al. 2021

Journal of Advanced Transportation

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“…The supplydemand ratio is calculated based on the catchment area, which is the area of space covered by facilities or people within a spatial barrier threshold (travel time or distance). The travel-cost approach [3], the isochrone approach [14], the gravity-based approach, and the raster-based model [15] are also commonly used methods for research on the accessibility of medical facilities. These methods realize the evaluation of the ease of access to medical services by residents and the impact of land use on accessibility by integrating location-allocation models and objective measurements.…”

Section: Literature Reviewmentioning

confidence: 99%

“…For instance, Cheng et al (2016) obtained the travel time with the help of digital maps and dynamic traffic information from data providers (Baidu Developer) [20]. used the Route Matrix API in the Baidu network map service to estimate the travel distance and the public transportation time encountered by those traveling to seek care [14]. There is also an efficient way for scholars to obtain dynamic traffic status data through the traffic index online platform by crawling [21].…”

Section: Literature Reviewmentioning

confidence: 99%

A Data-Driven Method for Measuring Accessibility to Healthcare Using the Spatial Interpolation Model

et al. 2021

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The evaluation of accessibility to healthcare greatly influences public policy. However, existing approaches mainly rely on network topology technology to estimate the driving paths available to healthcare users and the spatial impedances that they may encounter; these approaches do not suffice to represent the real life travel scenarios of urban traffic. This paper proposes a data-driven method to measure healthcare accessibility. The travel records related to visiting a health facility via taxi (VHT) were identified based on the travel destination, and the travel time for each trip was accurately recorded. The spatial interpolation model converts discrete taxi trajectory data into continuous data surfaces, and an improved cumulative accessibility measure method is applied to determine the accessibility to healthcare. A case study using four months of actual Ningbo taxi data shows that the mean absolute percentage error (MAPE) is 7.1%, and the root mean square error (RMSE) is approximately 2.57min. The case study results highlight that changes in travel speed over time have a significant impact on accessibility to healthcare facilities. This method measures the spatial impedance encountered by residents visiting medical facilities by capturing real travel scenarios and presenting the methodological implications of evaluating healthcare accessibility.

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“…access to stations, networks accessibility, and access to activities [8], which consider the accessibility to public transport services. However, our study is aimed at utilizing PTA to measure the accessibility to public transport users' specific destinations, which is the accessibility via public transport [9]. Therefore, public transport accessibility of medical services (PTAMS) is proposed to describe PTA with medical facilities as the destination.…”

Section: Introductionmentioning

confidence: 99%

Urban Public Transport Accessibility to Medical Services From the Perspective of Residents’ Travel: A Hybrid Assessment Based on the Whole Process

Qiang

Wang

et al. 2021

IEEE Access

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Equitable access to efficient medical services via public transport has always been one of the most important issues of healthcare in urban development. To accurately measure the urban public transport accessibility to medical services (PTAMS), this research proposes a hybrid assessment method based on multiple public-transport related indicators, including time, cost, and walking rate, which considers the whole process of residents' public transport travel. The presented assessment technique is then applied in a case of Xi'an, China. Through the classification of medical facilities and PTAMS levels, the results show that: (a) PTAMS value of 3,080 residential areas in Xi'an are highly consistent with the standard normal distribution; (b) More than 80% of residential areas can obtain high PTAMS when considering the use of Class 1 (large-scale) hospitals, while the high PTAMS of Class 2 (small-scale) ones can only cover less than 40% residential areas; (c) There is obvious spatial heterogeneity in the distribution of PTAMS in Class 2 hospitals and a serious lack of medical equity; (d) Among large hospitals, the private ones retain higher PTAMS and equitability, making themselves best choice for residents, which is opposed to the government's purpose of establishing public hospitals; (e) PTAMS of most residents substantially dropped about 4% during the morning peak-hour. However, subway protects PTAMS of nearby residents. This research provides references and suggestions on how to improve residents' PTAMS under the existing public transport network and medical facilities layout.

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Evaluation of Public Transport-Based Accessibility to Health Facilities considering Spatial Heterogeneity

Cited by 28 publications

References 29 publications

GPS Trajectory-Based Spatio-Temporal Variations of Traffic Accessibility under Public Health Emergency Consideration

GPS Trajectory-Based Spatio-Temporal Variations of Traffic Accessibility under Public Health Emergency Consideration

A Data-Driven Method for Measuring Accessibility to Healthcare Using the Spatial Interpolation Model

Urban Public Transport Accessibility to Medical Services From the Perspective of Residents’ Travel: A Hybrid Assessment Based on the Whole Process

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