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 4 Association of total and occupational UV exposure and risk for BCC in commonly sun-exposed body sites (n = 643 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)	115	143	Ref.	Ref.	Ref.	.	.	.
20. - < 40th percentile (8985.0 - 10,632.6 SED)	134	131	1.80	1.05–3.10	0.034	.	.	.
40th - < 60th percentile (10,632.7 - 12,565.6 SED)	138	132	1.70	1.01–2.84	0.044	.	.	.
60th - < 90th percentile (12,565.7 - 18,006.7 SED)	190	183	1.73	1.05–2.86	0.033	.	.	.
≥ 90th percentile (≥ 18,006.8 SED)	66	54	2.24	1.20–4.19	0.012	.	.	.
Total UV exposure (high versus moderate exposure)
40th - < 60th percentile (10,632.7 - 12,565.6 SED)	138	132	Ref.	Ref.	Ref.	.	.	.
≥ 90th percentile (≥ 18,006.8 SED)	66	54	1.32	0.81–2.17	0.269	.	.	.
Occupational UV exposure
< 44th percentile (< 2.9 SED)	268	286	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
44th - < 60th percentile (2.9–532.1 SED)	94	115	1.02	0.68–1.53	0.914	1.02	0.68–1.52	0.935
60th - < 90th percentile (532.2–5870.4 SED)	206	201	1.13	0.81–1.56	0.474	1.13	0.82–1.56	0.459
≥ 90th percentile (≥ 5870.5 SED)	75	41	2.08	1.24–3.48	0.006	2.08	1.24–3.50	0.006
Occupational UV exposure (high versus moderate exposure)
44th - < 60th percentile (2.9–532.1 SED)	94	115	Ref.	Ref.	Ref.	Ref.	Ref.	Ref.
≥ 90th percentile (≥ 5870.5 SED)	75	41	2.03	1.14–3.61	0.016	2.05	1.15–3.65	0.015

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