18.5 Mapping and geographical variation

Cancer of the brain and other CNS had a strong geographical pattern which was similar for both sexes, though slightly less pronounced for men (Maps 18.1-18.3).

The maps of relative risk showed a gradient across the whole island, with the highest relative risk in the south-west, decreasing uniformly to the area of lowest risk in the north-east. The risk in urban areas was similar to that in the surrounding countryside.