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Probabilistic model to analyze patient accessibility to medical facilities using geographic information systems

机译：使用地理信息系统分析医疗设施的患者可访问性的概率模型

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In this study, we developed a probabilistic model to analyze patient accessibility to hospitals by using a geographic information system (GIS). In the consideration of patient accessibility, we do not have correct patient addresses because of the laws related to protection of a patient's personal information. Thus, we use a representational place in the city or the ZIP code of the area. However, this may lead to a decline in the accuracy of the analysis. In this study, we used a 500-m mesh map and obtained the population gender and age group data from the national census data, in order to estimate the patient accessibility to medical facilities in small areas. We calculated the probability that a patient lives in each mesh on the basis of the population gender and five-year age group data. We selected the appropriate mesh on the basis of this probability and investigated the time distance from the estimated mesh to each hospital by using a GIS. As a result, we calculated the time distance and its distribution by using the proposed method from limited available information. Further, we found that in the target cities, the average time distance to hospital calculated using the proposed method was longer than that calculated by using a previous method; the percentage of patients who took more time than the city average to reach a hospital by using the proposed method. This method is very useful when planning the geographical resource allocation of medical services.
机译：在这项研究中，我们开发了一种概率模型，通过使用地理信息系统（GIS）来分析对医院的患者可访问性。在考虑患者可访问性时，由于与患者个人信息的保护有关的法律，我们没有正确的患者地址。因此，我们在城市或区域的邮政编码中使用代表处。然而，这可能导致分析的准确性下降。在这项研究中，我们使用了500米网格地图，并获得了国家人口普查数据的人口性别和年龄组数据，以估算小区的医疗设施的患者可访问性。我们计算了患者在每个网格中居住在每种网上的概率，基于人口性别和五年年龄组数据。我们根据这种概率选择了相应的网格，并通过使用GIS来研究与每个医院的估计网格到每个医院的时间距离。结果，我们通过使用来自有限的可用信息的方法计算时间距离及其分布。此外，我们发现在目标城市中，使用所提出的方法计算的医院的平均时间距离比使用先前方法计算的平均时间距离;采用所提出的方法，花费更多时间的患者比城市平均到达医院的百分比。在规划医疗服务的地理资源分配时，这种方法非常有用。

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