Table 2: Results of IARC meta-analysis of studies on the correlation between sun lamp exposure and the risk of melanoma, basal cell carcinoma, and squamous cell carcinoma onset [58].

Studies (n)Relative risk
(95% CI)
Heterogeneity
P value 2

Melanoma
 Sun lamp exposure191.15
(1.00–1.31)
0.013
 First exposure in young
 age
71.75
(1.35–2.26)
0.55
 Past exposure51.49 (0.93–2.38)0.018
 Recent exposure51.10
(0.76–1.60)
0,05625
Basal cell carcinoma
 Sun lamp exposure41.03
(0.56–1.90)
0.06
Squamous cell carcinoma
 Sun lamp exposure32.25
(1.08–4.70)
0.10