Table 5.
Association of UV exposure and risk for BCC in cases with histopathological subtypes nodular, sclerodermiform or superficial and matched controls (n = 576 in each group)
| UV exposure | Casesa | Contr.a | ORb | (95% - CI)b | p | ORc | (95% - CI)c | p |
|---|---|---|---|---|---|---|---|---|
| Total UV exposure (leisure time and occupational exposure) | ||||||||
| < 20th percentile (< 8985.0 SED) | 107 | 132 | Ref. | Ref. | Ref. | . | . | . |
| 20. - < 40th percentile (8985.0 - 10,632.6 SED) | 117 | 119 | 1.74 | 0.98–3.10 | 0.058 | . | . | . |
| 40th - < 60th percentile (10,632.7 - 12,565.6 SED) | 125 | 118 | 1.71 | 0.99–2.94 | 0.053 | . | . | . |
| 60th - < 90th percentile (12,565.7 - 18,006.7 SED) | 170 | 160 | 1.87 | 1.10–3.18 | 0.021 | . | . | . |
| ≥ 90th percentile (≥ 18,006.8 SED) | 57 | 47 | 2.27 | 1.17–4.42 | 0.016 | . | . | . |
| Total UV exposure (high versus moderate exposure) | ||||||||
| 40th - < 60th percentile (10,632.7 - 12,565.6 SED) | 125 | 118 | Ref. | Ref. | Ref. | . | . | . |
| ≥ 90th percentile (≥ 18,006..8 SED) | 57 | 47 | 1.33 | 0.78–2.26 | 0.292 | . | . | . |
| Occupational UV exposure | ||||||||
| < 44th percentile (< 2.9 SED) | 251 | 264 | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| 44th - < 60th percentile (2.9–532.1 SED) | 78 | 101 | 0.98 | 0.64–1.51 | 0.933 | 0.98 | 0.63–1.52 | 0.931 |
| 60th - < 90th percentile (532.2–5870.4 SED) | 183 | 173 | 1.13 | 0.80–1.58 | 0.49 | 1.13 | 0.80–1.58 | 0.49 |
| ≥ 90th percentile (≥ 5870.5 SED) | 64 | 38 | 1.98 | 1.14–3.44 | 0.015 | 1.98 | 1.14–3.44 | 0.015 |
| Occupational UV exposure (high versus moderate exposure) | ||||||||
| 44th - < 60th percentile (2.9–532.1 SED) | 78 | 101 | Ref. | Ref. | Ref. | Ref. | Ref. | Ref. |
| ≥ 90th percentile (≥ 5870.5 SED) | 64 | 38 | 2.02 | 1.09–3.74 | 0.026 | 2.02 | 1.09–3.75 | 0.026 |
a number of cases and controls (contr)
b adjusted for age, age2, sex, phototype
c adjusted for age, age2, sex, phototype and non-occupational UV exposure