Basal cell carcinoma risk and solar UV exposure in occupationally relevant anatomic sites: do histological subtype, tumor localization and Fitzpatrick phototype play a role? A population-based case-control study

Table 6 Association of total and occupational UV exposure and risk for BCC in phototypes 1/2 and matched controls (n = 451 in each group)

UV exposure	Cases^a	Contr.^a	OR^b	(95% - CI)^b	p	OR^c	(95% - CI)^c	p
Total UV exposure (leisure time and occupational exposure)
< 20th percentile (< 8985.0 SED)	75	120	Ref.	Ref.	Ref.	.	.	.
20. - < 40th percentile (8985.0 - 10,632.6 SED)	90	102	1.71	1.10–2.66	0.018	.	.	.
40th - < 60th percentile (10,632.7 - 12,565.6 SED)	95	95	1.92	1.21–3.03	0.005	.	.	.
60th - < 90th percentile (12,565.7 - 18,006.7 SED)	111	136	1.60	1.02–2.51	0.042	.	.	.
≥ 90th percentile (≥ 18,006.8 SED)	40	38	2.12	1.17–3.85	0.013	.	.	.
Total UV exposure (high versus moderate exposure)
40th - < 60th percentile (10,632.7 - 12,565.6 SED)	95	95	Ref.	Ref.	Ref.	.	.	.
≥ 90th percentile (≥ 18,006.8 SED)	40	38	1.11	0.64–1.90	0.714	.	.	.
Occupational UV exposure
< 44th percentile (< 2.9 SED)	180	217	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
44th - < 60th percentile (2.9–532.1 SED)	54	80	0.82	0.55–1.24	0.353	0.82	0.55–1.24	0.353
60th - < 90th percentile (532.2–5.870.4 SED)	128	158	0.95	0.68–1.32	0.759	0.95	0.68–1.32	0.755
≥ 90th percentile (≥ 5870.5 SED)	49	36	1.73	1.05–2.85	0.031	1.73	1.05–2.85	0.031
Occupational UV exposure (high versus moderate exposure)
44th - < 60th percentile (2.9–532.1 SED)	54	80	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
≥ 90th percentile (≥ 5870.5 SED)	49	36	2.11	1.21–3.68	0.009	2.11	1.21–3.68	0.009

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