Table 3

 Migration polarities near roads, railways, bus/rail stations, ferries. Banded according to distance from nearest address

Nearest* distance (km)Birth nearestDeath nearestExcess birthsB/D ratio95% 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.
−0.114427037392.051.87 to 2.24
−0.210016833181.481.33 to 1.62
−0.34853321531.461.27 to 1.69
−1.02491231262.021.63 to 2.51
−3.0191161301.190.96 to 1.46
Total3368200213661.681.59 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