Table 4. Association of several risk factors with SCC (with or without BCC) and BCC (with no SCC).
| Squamous-cell carcinoma (with or without BCC) adjusted OR (95% CI)1 |
Basal-cell carcinoma (with no SCC) Adjusted OR (95% CI)1 |
|
|---|---|---|
| All countries together 2 | ||
| Transplant type | ||
| Only renal | 1.0 | 1.0 |
| Other types | 0.9 (0.52;1.5) | 0.9 (0.48;1.5) |
| Skin phototype | ||
| Olive | 1.0 | 1.0 |
| Medium | 2.0 (1.3;3.0) | 1.8 (1.1;2.8) |
| Fair | 1.8 (1.1;3.1) | 1.6 (0.90;2.9) |
| Education | ||
| Low and middle | 1.0 | 1.0 |
| High | 1.2 (0.80;1.7) | 1.8 (1.2;2.8) |
| Sunburn before 20 years | ||
| 0 | 1.0 | 1.0 |
| 1–4 | 1.7 (1.1;2.4) | 1.4 (0.87;2.2) |
| 5+ | 1.7 (0.96;2.9) | 2.0 (1.1;3.6) |
| Chronic sun exposure | ||
| 0–3 h | 1.0 | 1.0 |
| 4 and more | 0.92 (0.63;1.4) | 0.8 (0.51;1.2) |
| Weekend sun exposure | ||
| 0–3 h | 1.0 | 1.0 |
| 4 and more | 0.82 (0.57;1.2) | 1.1 (0.74;1.7) |
| Smoking | ||
| Never | 1.0 | 1.0 |
| Current | 1.0 (0.56;1.8) | 0.8 (0.42;1.6) |
| Ex | 0.6 (0.43;0.95) | 0.7 (0.45;1.1) |
| Alcohol | ||
| None | 1.0 | 1.0 |
| Low | 1.6 (0.92;2.7) | 0.8 (0.43;1.4) |
| High | 1.2 (0.72;1.9) | 0.7 (0.39;1.1) |
BCC, basal-cell carcinoma; SCC, squamous-cell carcinoma.
1
Adjusted for age, sex, years after transplantation and study center.
2
The complete data for the five countries are provided separately in Tables S4 and S5.