Table 1. Demographic characteristics of the study population at baseline and at 10-year follow-up
Baseline10-yearfollow-up
n (%) n (%)
Sex
Female190(61.5)135(59.0)
Male119(38.5)94(41.0)
Age at baseline, years
18–2513(4.2)8(3.5)
26–4066(21.4)47(20.5)
41–65163(52.8)129(56.3)
>6567(21.7)45(19.7)
Educational level
Elementary school111(35.9)83(36.2)
Upper secondary school126(40.8)93(40.6)
University degree72(23.3)53(23.1)
Skin type (Fitzpatrick’s classification)
High UV sensitivity (Type I–II)99(32.1)74(32.5)
Low UV sensitivity (Type III–VI)209(67.9)154(67.5)
Previous history of skin cancera
No skin cancer290(96.0)194(84.7)
Basal cell carcinoma (BCC)6(2.0)10(4.4)
Squamous skin carcinoma (SCC0(0.0)1(0.4)
Malignant melanoma (MM)5(1.7)5(2.2)
Skin cancer, type unknown by responder1(0.3)19(8.3)
  • aDiagnosis distribution between groups at 10 years: Group 1: 2 BCC, 2 MM, 5 type unknown. Group 2: 3 BCC, 1 SCC, 2 MM, 6 type unknown. Group 3: 5 BCC, 1 MM, 8 type unknown.