Table 3

Predictive value (PV) and selected questions from the questionnaire for assessment of malignant melanoma risk when the cohorts of pilots and cabin attendants were compared to a random sample of the population, according to Axelson and Steenland18

Selected risk ratioPV for pilotsPV for cabin attendants
2.Red hair colour1.5
    Other hair colour1
1.000.99
4.Number of naevi
    0–201
    21–1001.5
    More than 1002.5
1.081.06
5.Skin reactions when sunbathing
    Always burn, never tan5
    Always burn, occasionally tan3
    Occasionally burn, always tan2
    Never burn, always tan1
1.060.97
6.History of severe sunburn after the age of 19
    Never1
    1–5 times1.5
    More than 5 times2.5
1.081.05
7.History of severe sunburn before the age of 19
    Never1
    1–5 times1.5
    More than 5 times2.5
1.031.01
8.Use of sun beds/sunlamps
    Never1
    1–10 times2
    10–100 times3
0.851.03
9.Use of sunscreen
    Never3
    Sometimes2
    Always1
0.880.85
10.Sunny vacation
    Never1
    1–10 times2
    11–20 times3
    More than 20 times5
1.361.34