【正文】 Socioe cono mic Di sadva ntage Scor es (Fa ctor 1 )L e g e n dF AC T OR1 2. 0 1130 0 0. 4628 0 0 0. 4 6279 9 0. 1000 000 . 10 0001 0. 9 3330 00 . 93 3301 1. 8 8860 01 . 88 8601 3. 1 6170 03 . 16 1701 5. 8 7210 0C ou nt y Boun d ary0 25 50 751 2 . 5Mi l e s177。 standard deviation above mean and secondary indicator (factor 2) 1 standard deviation above mean 0 25 50 751 2 .5M i l e s177。Medical Geography: Health Care Accessibility and Implications Fahui Wang Fred B. Kniffen Professor of Geography Louisiana State University June 17, 2022 CNU Contents ? The issue of access ? GISbased accessibility measures ? Optimization towards equal access ? Application in healthcare access ? PHSA designation and latestage cancer ? Concluding ments Access Matters! ? Convenience of access to activities ? job, school, healthcare, park, public service, shopping … ? Access defines “l(fā)ocation” ? Spatial ? Where you are ? Nonspatial ? Who you are ? Social justice and public policy Measurement ? How scarce are the services? ? Supply vs. Demand (ratio) ? How far are demands from supplies? ? Distance ? Road work ? Transportation means Primitive measures ? Distance (time) from supply ? Simply potential model ? Supplydemand ratio within an area ? FCA with a radius/box ? FCA with a travel time range ? ?? j ijji dSA ?From S/D Ratio to FCA ? Simply S/D Ratio ? FCA with a Radius ? Improvements ? Withinunit variation ? Crossborder ? Limitations ? Straightline ? SD beyond radius 2step floating catchment area: 2SFCA ? Scale availability at each supply location ? Sum up accessible supplies around each demand location 2SFCA Recap 1a. For each supply location j, select all demand locations k within a travel time