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Table 3 Performance comparison of alternative kriging estimators: kriging variance and smoothing effect.

From: Geostatistical analysis of disease data: accounting for spatial support and population density in the isopleth mapping of cancer mortality risk using area-to-point Poisson kriging

Estimators

Lung cancer

Cervix cancer

 

Kriging variance

Dispersion variance

Kriging variance

Dispersion variance

Point kriging of raw rates

9.691

5.536

2.724

1.726

Point kriging of global EBS

3.423

2.934

0.314

0.281

Point kriging of local EBS

3.307

2.902

0.237

0.448

ATP Poisson kriging

9.378

8.401

0.645

0.926

ATP Poisson kriging (true γR(h))

9.470

8.654

0.849

1.089

  1. Results obtained on average over 100 realizations generated for Regions 1 and 2. The dispersion variance refers to the variance of risk estimates. Poisson kriging was conducted with the semivariogram model derived through deconvolution or inferred directly from the simulated grid risk values (true point-support model γR(h)).
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International Journal of Health Geographics

ISSN: 1476-072X