Male Sex is an Inherent Risk Factor for Basal Cell Carcinoma

Table 1

Criteria for the selection of data sets.

Inclusion criteria	At least 2 subclasses for ages <40 years
	Patient / tumor numbers are available in age classes
	Age-specific data for the two sexes separately
	Incidences reported in age intervals ≤10 years
	≥250 patients/cases included
	Reference population: Study from a European country or population of European descent
Exclusion criteria	Restricted to selected age subgroups
	Focus on selected anatomical localizations