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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