TABLE 3a.

Sun exposure behaviour Ireland, keratinocyte cancer V's no keratinocyte cancer N (%)

		Total	Keratinocyte cancer	No keratinocyte cancer
Number of patients		500	173	327
Sun exposure score	>8*	222 (44%)	114 (66%)	108 (33%)
	≤8	278 (56%)	59 (34%)	219 (67%)
Sun exposure Score A sun exposure score was calculated which covered time periods 0–19, 20–39, 40–59 and >60 years of patient's life. For each period, an occupational and recreational score was assigned out of maximum scores of 3 each, it was based on patient interview of hours spent outdoors during job and hobbies and the following: Whether the person lived abroad in a hot sunny climate, ever had >2 painful sunburns or used sunbeds during the time. A score of 1 was regarded as low sun exposure, 2 intermediate and 3 high sun exposure. The cumulative scores were added together so that the total sun exposure score ranged from a minimum of 2 to a maximum of 24. For further details see supplementary Table S1. The mean sun exposure score was 8 ± SD 4.4