Table 1.

Characteristics of the study groups

	Mesothelioma patients (N)	Asbestos-exposed controls (N)
Gender
Male	22	44
Age (years)
Median	71.5	72.5
Range	40–84	49–83
Smoking status
Ever	9	22
Never	11	22
Unknown	2	0
Histological subtype
Epitheliod	14	–
Biphasic	2	–
Sacromatoid	2	–
Unknown	4	–