Table 5

Chi-square statistics associated with group level accuracy

Geo-imputation methods

FixedZip

FixedArea

FixedPop

Fixed019

RandArea

RandPop

Rand019

RandRace019

Colorado

399.4479

427.7909

388.6003

386.8368

7.5191

1.038

1.2907

3.7910

p < 0.0001

p < 0.0001

p < 0.0001

p < 0.0001

p = 0.1848

p = 0.9594

p = 0.9359

p = 0.5799

Ohio

141.5495

152.4194

139.2934

139.2934

3.0906

1.362

1.2907

1.8665

p < 0.0001

p < 0.0001

p < 0.0001

p < 0.0001

p = 0.686

p = 0.9594

p = 0.9359

p = 0.8673

South Carolina

146.8333

141.8189

149.1956

143.6908

4.3042

7.6184

1.7513

1.0542

p < 0.0001

p < 0.0001

p < 0.0001

p < 0.0001

p = 0.5065

p = 0.1786

p = 0.8824

p = 0.9580

Washington

146.5466

23.6656

22.777

129.8429

1.4884

1.1255

0.2134

3.8452

p < 0.0001

p = 0.0003

p = 0.0004

p < 0.0001

p = 0.9144

p = 0.9518

p = 0.999

p = 0.5719

Hibbert et al. International Journal of Health Geographics 2009 8:54   doi:10.1186/1476-072X-8-54