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 7 Association of total and occupational UV exposure and risk for BCC in commonly sun-exposed body sites in phototypes 3/4 and matched controls (n = 287 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)	40	55	Ref.	Ref.	Ref.	.	.	.
20. - < 40th percentile (8985.0 - 10,632.6 SED)	44	66	1.11	0.61–2.04	0.724	.	.	.
40th - < 60th percentile (10,632.7 - 12,565.6 SED)	43	70	1.08	0.58–2.00	0.805	.	.	.
60th - < 90th percentile (12,565.7 - 18,006.7 SED)	79	117	1.25	0.69–2.24	0.459	.	.	.
≥ 90th percentile (≥ 18,006.8 SED)	26	34	1.58	0.75–3.33	0.228	.	.	.
Total UV exposure (high versus moderate exposure)
40th - < 60th percentile (10,632.7 - 12,565.6 SED)	43	70	Ref.	Ref.	Ref.	.	.	.
≥ 90th percentile (≥ 18,006.8 SED)	26	34	1.46	0.76–2.81	0.254	.	.	.
Occupational UV exposure
< 44th percentile (< 2.9 SED)	88	146	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
44th - < 60th percentile (2.9–532.1 SED)	40	63	1.14	0.69–1.86	0.61	1.13	0.69–1.86	0.618
60th - < 90th percentile (532.2–5.870.4 SED)	78	107	1.39	0.92–2.10	0.123	1.39	0.92–2.10	0.122
≥ 90th percentile (≥ 5870.5 SED)	26	26	2.13	1.12–4.05	0.021	2.13	1.12–4.06	0.021
Occupational UV exposure (high versus moderate exposure)
44th - < 60th percentile (2.9–532.1 SED)	40	63	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
≥ 90th percentile (≥ 5870.5 SED)	26	26	1.87	0.94–3.73	0.074	1.88	0.94–3.75	0.072

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