Table 3

The hierarchical spatial relationships between blocks and counties and between blocks and congressional districts

County

Block

Congressional district


County A

Block A1

Block A2

Block A3

Congressional district #1

...

County B

Block B1

Block B2

Block B3

...

County C

Block C1

Congressional district #2

Block C2

Block C3

...

...

...

...


Hao et al. International Journal of Health Geographics 2006 5:28   doi:10.1186/1476-072X-5-28

Open Data