Department of Humanities and Social Sciences, Indian Institute of Technology Madras (IIT M), Tamil Nadu, Chennai, India.
PLoS One. 2020 Oct 21;15(10):e0239326. doi: 10.1371/journal.pone.0239326. eCollection 2020.
Long distances to facilities, topographical constraints, inadequate service capacity of institutions and insufficient/ rudimentary road & transportation network culminate into unprecedented barriers to access. These barriers gets exacerbated in presence of external factors like conflict and political disruptions. Thus, this study was conducted in rural, remote and fragile region in India measuring geographical accessibility and modelling spatial coverage of public healthcare network.
Vector and raster based approaches were used to discern accessibility for various packages of service delivery. Alternative scenarios derived from local experiences were modelled using health facility, population and ancillary data. Based on that, a raster surface of travel time between facilities and population was developed by incorporating terrain, physical barriers, topography and travelling modes and speeds through various land-cover classes. Concomitantly, spatial coverage was modelled to delineate catchment areas. Further, underserved population and zonal statistics were assessed in an interactive modelling approach to ascertain spatial relationship between population, travel time and zonal boundaries. Finally, raster surface of travel time was re-modelled for the conflict situation in villages vulnerable to obstruction of access due to disturbed security scenario.
Euclidean buffers revealed 11% villages without ambulatory & immunization care within 2 km radius. Similarly, for 5 km radius, 11% and 12% villages were bereft of delivery and inpatient care. Travel time accessibility analysis divulged walking scenario exhibiting lowest level of accessibility. Enabling motorized travel improved accessibility measures, with highest degree of accessibility for privately owned vehicle (motorcycle and cars). Differential results were found between packages of services where ambulatory & immunization care was relatively accessible by walking; whereas, delivery and inpatient care had a staggering average of three hours walking time. Even with best scenario, around 2/3rd population remained unserved for all package of services. Moreover, 90% villages in conflict zone grapples with inaccessibility when the scenario of heightened border tensions was considered.
Our study demonstrated the application of GIS technique to facilitate evidence backed planning at granular level. Regardless of the scenario, the analysis divulged inaccessibility to delivery and inpatient care to be most pronounced and majority of population to be unserved. It was suggested to have concerted efforts to bolster already existing facilities and adapt systems approach to exploit synergies of inter-sectoral development.
距离医疗机构的路程遥远、地形限制、机构服务能力不足以及道路和交通网络不完善/基本,这些都导致了前所未有的获取障碍。在冲突和政治动荡等外部因素的影响下,这些障碍更加严重。因此,本研究在印度农村、偏远和脆弱地区进行,旨在衡量公共医疗网络的地理可达性并对其空间覆盖范围进行建模。
使用基于矢量和栅格的方法来辨别各种服务包的可达性。根据当地经验得出的替代方案,使用卫生设施、人口和辅助数据进行建模。在此基础上,通过考虑地形、物理障碍、地形以及通过各种土地覆盖类型的行驶模式和速度,开发了一个设施和人口之间的旅行时间栅格表面。同时,对空间覆盖范围进行建模,以划定集水区。此外,在交互式建模方法中评估服务不足的人口和区域统计数据,以确定人口、旅行时间和区域边界之间的空间关系。最后,针对因安全局势动荡而可能导致获取受阻的村庄,重新对旅行时间栅格表面进行建模。
欧几里得缓冲区显示,在 2 公里半径范围内,有 11%的村庄没有门诊和免疫护理;同样,在 5 公里半径范围内,有 11%和 12%的村庄没有分娩和住院护理。旅行时间可达性分析显示,步行场景的可达性最低。启用机动旅行可提高可达性指标,其中私人拥有的车辆(摩托车和汽车)的可达性最高。在服务包之间,步行时门诊和免疫护理的可达性相对较高,而分娩和住院护理的步行时间则令人震惊地达到了三个小时,结果存在差异。即使在最佳情况下,所有服务包中仍有三分之二的人口得不到服务。此外,当考虑到边境紧张局势加剧的情况时,冲突地区的 90%的村庄都面临着无法进入的问题。
本研究展示了 GIS 技术在促进基层循证规划方面的应用。无论采用哪种情景,分析结果都表明,分娩和住院护理的可达性最差,大多数人口无法获得服务。建议共同努力,加强现有设施,并采取系统方法利用部门间发展的协同作用。