Table 2. Skin type and ultraviolet radiation exposure parameters for prostate cancer and male BCC patients.

	Prostate cancer OR (95% CI)	P-value	Basal cell carcinoma OR (95% CI)	P-value
Skin type
1(never tans)	0.47 (0.26–0.86)	0.031	4.00 (2.16–7.41)	<0.001
2	0.73 (0.49–1.09)	0.120	3.13 (1.88–5.21)	<0.001
3	0.74 (0.51–1.07)	0.114	2.40 (1.47–3.92)	<0.001
4 (readily tans)	Reference		Reference
P-trend		0.024		<0.001
Foreign Holidaya,b
No	Reference		Reference
Yes	0.58 (0.42–0.80)	0.001	6.91 (5.00–9.55)	<0.001
Childhood sunburna,c
No	Reference		Reference
Yes	0.38 (0.26–0.57)	<0.001	1.91 (1.36–2.68)	<0.001
Sunbathinga
Never	Reference		Reference
Rarely	0.46 (0.32–0.67)	<0.001	1.13 (0.75–1.71)	0.561
Occasional/frequent	0.21 (0.14–0.31)	<0.001	1.27 (0.84–1.94)	0.260
Average daily sun exposurea,d	0.78 (0.72–0.85)	<0.001	1.08 (1.00–1.17)	0.039
Average weekday exposurea,d	0.85 (0.80–0.91)	<0.001	1.00 (0.94–1.06)	0.977
Average weekend exposurea,d	0.79 (0.73–0.86)	<0.001	1.17 (1.08–1.27)	<0.001

Abbreviations: CI=confidence interval; OR=odds ratio.

^aAdjusted for age and skin type.

^bDefined as one or more foreign holidays in a sunny climate per year for 10 years.

^cChildhood sunburn represents one or more episodes of skin blistering or sunburn lasting more than 48 h.

^dHours per day.