Table 3.
Comparison of the power functions between the Poisson based ZPOIS and the weighted-least-squares based ZWLS for two overlapping regions over slightly overlapping time intervals, Region 1 (1980–1989) vs Region 2 (1987–1996). APC1 and APC2 are the annual percent changes in Regions 1 and 2, respectively.
| Cancer Sites | APC1 | APC2 | ARE | ZWLS | ZPOIS |
|---|---|---|---|---|---|
| All Malignant | 0.100 | 0.100 | 1.1350 | 0.044 | 0.044 |
| −0.300 | −0.300 | 1.1350 | 0.044 | 0.046 | |
| 0.500 | 0.500 | 1.1351 | 0.046 | 0.051 | |
| 1.000 | 1.000 | 1.1351 | 0.045 | 0.051 | |
| 3.000 | 3.000 | 1.1352 | 0.043 | 0.047 | |
| 0.100 | 0.500 | 1.1354 | 0.834 | 0.891 | |
| −0.300 | 0.300 | 1.1355 | 0.994 | 0.994 | |
| 1.000 | 2.000 | 1.1362 | 1.000 | 1.000 | |
| 1.000 | 3.000 | 1.1367 | 1.000 | 1.000 | |
| Prostate | 0.100 | 0.100 | 1.1410 | 0.045 | 0.051 |
| −0.300 | −0.300 | 1.1410 | 0.043 | 0.049 | |
| 0.500 | 0.500 | 1.1412 | 0.060 | 0.051 | |
| 1.000 | 1.000 | 1.1423 | 0.061 | 0.055 | |
| 3.000 | 3.000 | 1.1426 | 0.052 | 0.052 | |
| 0.100 | 0.500 | 1.1428 | 0.170 | 0.184 | |
| −0.300 | 0.300 | 1.1431 | 0.319 | 0.361 | |
| 1.000 | 2.000 | 1.1436 | 0.706 | 0.759 | |
| 1.000 | 3.000 | 1.1439 | 0.998 | 1.000 |