12.5 Mapping and geographical variation

Due to the much higher incidence of head and neck cancer in men, the geographical pattern for both sexes (Map 12.1) was similar to that for men only.

Areas of high relative risk for men were scattered throughout the country—along the western seaboard, around Cork, Kerry, Tipperary South, Clare, Limerick, Dublin city and north Dublin, Belfast, Moyle, Larne, Cookstown, Derry, Newry and Mourne, Longford, Galway and Mayo (Map 12.2).

There was a quite different pattern of geographical variation for women with one large area of higher relative risk from north Leitrim/south Donegal to the east coast of NI, and covering most of the southern half of NI and the border counties in RoI. Other areas of higher risk were in Dublin city, north Dublin, the Inishowen peninsula in Donegal, the Dingle peninsula in Kerry and along the northern coast of NI from Derry to Moyle (Map 12.3).

Map 12.1 Head and neck cancer, smoothed relative risks: both sexes

Map 12.2 Head and neck cancer, smoothed relative risks: males

Map 12.3 Head and neck cancer, smoothed relative risks: females

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