Table 2 Results of the multivariable analysis with “use of sunbeds after 15 years of age” as dependent variable.
ORa (95% CI) | Pvalue | Ptrend | |
|---|---|---|---|
Sex | |||
Male | 1 | ||
Female | 3.52 (2.81–4.42) | < 0.0001 | |
Age | |||
≥ 55.0 | 1 | ||
35.0–54.9 | 1.33 (0.99–1.78) | 0.056 | |
< 35.0 | 2.68 (2.10–3.43) | < 0.0001 | 0.048 |
Area of residence (Italy) | |||
North | 1 | ||
Centre | 0.64 (0.47–0.89) | 0.007 | |
South/islands | 0.28 (0.20–0.41) | < 0.0001 | |
Education, years | |||
≤ 8 | 1 | ||
> 8 | 1.68 (1.19–2.36) | 0.003 | |
Phototype | |||
I-II | 1 | ||
III-VI | 1.56 (1.20–2.03) | 0.001 | |
Nevi, total number | |||
≤ 10 | 1 | ||
11–30 | 1.51 (1.05–2.16) | 0.025 | |
33–50 | 1.92 (1.34–2.76) | < 0.0001 | |
51–100 | 2.43 (1.61–3.68) | < 0.0001 | |
≥ 100 | 2.87 (1.80–4.57) | < 0.0001 | < 0.0001 |
Use of sunbeds before 15 ys | |||
No | 1 | ||
Yes | 2.02 (1.09–3.73) | 0.024 | |
History of sunburns before 15 ys | |||
No | 1 | ||
Yes | 1.74 (1.42–2.13) | < 0.0001 | |
Use of sunscreens | |||
No | 1 | ||
Yes | 1.48 (1.05–2.08) | 0.026 | |
Smoking | |||
Never | 1 | ||
Current | 1.59 (1.26–2.00) | < 0.0001 | |
Former | 2.33 (1.65–3.30) | < 0.0001 | |
Subject at risk for presence of solar damage | |||
No | 1 | ||
Yes | 1.66 (1.34–2.06) | < 0.0001 | |
