Migration polarities near roads, railways, bus/rail stations, ferries. Banded according to distance from nearest address
| Nearest* distance (km) | Birth nearest | Death nearest | Excess births | B/D ratio | 95% CI |
|---|---|---|---|---|---|
| *These are upper limits of distance bands synthesised from 50 m search bands within the effective ranges of the included hazards. Polarities are determined for children migrating across successive 50 m boundaries up to a maximum of 3.0 km. | |||||
| −0.1 | 1442 | 703 | 739 | 2.05 | 1.87 to 2.24 |
| −0.2 | 1001 | 683 | 318 | 1.48 | 1.33 to 1.62 |
| −0.3 | 485 | 332 | 153 | 1.46 | 1.27 to 1.69 |
| −1.0 | 249 | 123 | 126 | 2.02 | 1.63 to 2.51 |
| −3.0 | 191 | 161 | 30 | 1.19 | 0.96 to 1.46 |
| Total | 3368 | 2002 | 1366 | 1.68 | 1.59 to 1.78 |
| B/D ratio within 0.3 km = 1.70 | |||||
| Attributable percentage within 3.0 km = 24.1 | |||||
| Attributable percentage within 0.3 km = 21.3 | |||||