Table 1. Descriptive statistics for melanoma cases and solid tumour controls.

Cases	All melanomasa	Eligible melanomasb
Head and neck
N (%) of all melanomas	1193 (19)	512 (14)
N (%) female	632 (53)	268 (52)
Mean (median) age at diagnosis	67 (71)	64 (69)
N (%) with keratinocyte cancers	146 (12)	64 (13)
Trunk
N (%) of all melanomas	1550 (24)	1018 (27)
N (%) female	593 (38)	386 (38)
Mean (median) age at diagnosis	52 (53)	52 (53)
N (%) with keratinocyte cancers	97 (6)	65 (6)
Upper limbs
N (%) of all melanomas	1189 (19)	749 (20)
N (%) female	765 (64)	487 (65)
Mean (median) age at diagnosis	54 (54)	53 (52)
N (%) with keratinocyte cancers	79 (7)	55 (7)
Lower limbs
N (%) of all melanomas	2432 (38)	1495 (40)
N (%) female	1944 (80)	1205 (81)
Mean (median) age at diagnosis	55 (55)	53 (53)
N (%) with keratinocyte cancers	142 (6)	92 (6)
Controls
Solid tumours
N	349 923
N (%) female	173 795 (50)c
Mean (median) age at diagnosis	69 (70)
N (%) with keratinocyte cancers	10 754 (3)

^aExcluding those for whom site was unknown.

^bSite known, eligible histological type (not LMM, acral lentiginous, desmoplastic or other ineligible types).

^cSex missing for 151 patients.