Table 1. Demographic characteristics of the study population at baseline and at 10-year follow-up.
| Baseline | 10-yearfollow-up | |||
|---|---|---|---|---|
| n | (%) | n | (%) | |
| Sex | ||||
| Female | 190 | (61.5) | 135 | (59.0) |
| Male | 119 | (38.5) | 94 | (41.0) |
| Age at baseline, years | ||||
| 18–25 | 13 | (4.2) | 8 | (3.5) |
| 26–40 | 66 | (21.4) | 47 | (20.5) |
| 41–65 | 163 | (52.8) | 129 | (56.3) |
| >65 | 67 | (21.7) | 45 | (19.7) |
| Educational level | ||||
| Elementary school | 111 | (35.9) | 83 | (36.2) |
| Upper secondary school | 126 | (40.8) | 93 | (40.6) |
| University degree | 72 | (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 cancer a | ||||
| No skin cancer | 290 | (96.0) | 194 | (84.7) |
| Basal cell carcinoma (BCC) | 6 | (2.0) | 10 | (4.4) |
| Squamous skin carcinoma (SCC | 0 | (0.0) | 1 | (0.4) |
| Malignant melanoma (MM) | 5 | (1.7) | 5 | (2.2) |
| Skin cancer, type unknown by responder | 1 | (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.