Co-variable | Vaccination | Concomitant effect (type of) | |
---|---|---|---|
 | Yes | No |  |
Skin-type (Fitzpatrick) | Â | Â | Â |
III/IV | 1.00 n = 607 | 1.68 (0.93-3.05) n = 58 |  |
II | 1.80 (1.18-2.78) n = 396 | 2.15 (0.65-8.34) n = 30 |  |
I | 1.54 (1.16-2.05) n = 126 | 6.37 (3.50-19.64) n = 12 | Synergistic |
Sunburns in life | Â | Â | Â |
0 | 1.00 n = 338 | 1.51 (0.76-3.01) n = 46 |  |
1-5 | 0.93 (0.68-1.26) n = 596 | 2.29 (1.14-4.76) n = 45 |  |
>5 | 1.39 (0.91-2.14) n = 191 | 5.30 (0.87-102.48) n = 8 | Synergistic |
Naevi | Â | Â | Â |
0 | 1.00 n = 272 | 2.51 (1.16-5.77) n = 35 |  |
1-4 | 1.05 (0.70-1.48) n = 387 | 5.24 (1.89-17.10) n = 22 |  |
>4 | 1.56 (1.10-2.22) n = 456 | 1.71 (0.84-3.57) n = 42 | Non-cumulative |
Freckles on arm | Â | Â | Â |
0 | 1.00 N = 457 | 3.26 (1.60-6.87) n = 39 |  |
10-20 | 1.57 (1.17-2.10) n = 426 | 2.38 (1.09-5.32) n = 31 |  |
>20 | 3.03 (2.13-4.35) n = 247 | 4.06 (1.78-10.17) n = 30 | Non-cumulative |