Table 3. Voxel-wise topographical correlation (r) of the PDRPs from 4 different countries.
| PDRP (USA) | PDRP (Netherlands) | PDRP (China) | PDRP (India) | |
| PDRP (USA) | . | 0.7299* (p<0.001) | 0.8529* (p<0.001) | 0.8558* (p<0.001) |
| PDRP (Netherlands) | 0.7299* (p<0.001) | . | 0.7307 (p<0.001) | 0.7482* (p<0.001) |
| PDRP (China) | 0.8529* (p<0.001) | 0.7307* (p<0.001) | . | 0.8265* (p<0.001) |
| PDRP (India) | 0.8558* (p<0.001) | 0.7482* (p<0.001) | 0.8265* (p<0.001) | . |
*
p<0.05 after Bonferroni correction for multiple comparisons (6 comparisons: p<0.00833).
The p-value is empirically calculated based on the rank of r2-value in 1,000 simulations.