Table 1

Patient and tumour characteristics

Patient and tumour characteristicsMelanomaControl
Number of patients65218
Mean age (years)62.668.4
Sex
    Male42 (64.6%)91 (41.7%)
    Female23 (35.4%)127 (58.3%)
Melanoma size (mean)
    Largest basal dimension12.9 mm
    Smallest basal dimension10.2 mm
    Thickness6.04 mm
Melanoma location
    Superonasal10 (15.4%)
    Superotemporal23 (35.4%)
    Inferonasal11 (16.9%)
    Inferotemporal21 (32.3%)
Melanoma location relative to equator
    Anterior21 (32.3%)
    Posterior44 (67.7%)
Iris colour
    Light53 (81.5%)158 (72.5%)
    Dark12 (18.5%)60 (27.5%)
Choroidal pigmentation
    Light10 (15.4%)37 (17.0%)
    Medium17 (26.1%)88 (40.4%)
    Dark38 (58.4%)93 (42.6%)