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Table 6 Comparison of underserved areas and LAAs identified with speed limits assigned to roads (% change reflects change compared to initial travel speed settings)

From: Measuring geographic access to health care: raster and network-based methods

Underserved areas Raster % Change Network % Change
Area (km2) 37,945 -28 31,815 -21
Number of unique areas 61 -73 390 1
Number of zip codes 238 -42 255 -19
Total population (zip code) 856,150 -62 1,000,612 -22
Limited access areas Raster % Change Network % Change
Area (km2) 35,404 -28 19,343 -44
Number of unique areas 6 -60 3 -50
Number of zip codes 194 -41 117 -41
Total population (zip code) 694,562 -62 333,290 -49