Unveiling dialysis centers’ vulnerability and access inequality during urban flooding
Unveiling dialysis centers’ vulnerability and access inequality during urban flooding
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DOI：
10.1016/j.trd.2023.103920
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发表时间：
2023-11
期刊：
影响因子：
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通讯作者：
Faxi Yuan;H. Farahmand;Russell Blessing;Samuel Brody;Ali Mostafavi
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文献类型：
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作者：
Faxi Yuan;H. Farahmand;Russell Blessing;Samuel Brody;Ali Mostafavi
这项研究使用了2017年哈里斯县哈维飓风背景下的流动性数据，以检查洪水对进入透析中心的影响。我们使用静态和动态指标检查了访问维度。静态度量是从人口普查区组到最近中心的最短距离。动态指标是：1)冗余(每天唯一访问的中心数量)，2)频率(每天访问透析中心的次数)，以及3)接近程度(访问按距离加权的透析中心)。结果表明：不同地区对透析中心的依赖程度不同；洪水显著减少了透析中心的接入冗余和频率；少数族裔比例较大和家庭收入较低的地区可能经历广泛的中断；高收入地区更快地恢复到灾难前的水平；位于非洪灾地区的较大中心对于吸收中断设施中未得到满足的需求至关重要。
This study uses mobility data in the context of 2017 Hurricane Harvey in Harris County to examine the impact of flooding on access to dialysis centers. We examined access dimensions using static and dynamic metrics. The static metric is the shortest distance from census block groups to the closest centers. Dynamic metrics are: 1)redundancy(daily unique number of centers visited), 2)frequency(daily number of visits to dialysis centers), and 3)proximity(visits weighted by distance to dialysis centers). The results show that: the extent of dependence of regions on dialysis centers varies; flooding significantly reduces access redundancy and frequency of dialysis centers; regions with a greater minority percentage and lower household income were likely to experience extensive disruptions; high-income regions more quickly revert to pre-disaster levels; larger centers located in non-flooded areas are critical to absorbing the unmet demand from disrupted facilities.