. Author manuscript; available in PMC: 2014 Apr 28.

Published in final edited form as: Environ Mol Mutagen. 2013 Nov 23;55(3):256–265. doi: 10.1002/em.21829

Table 1. Characteristics of the study participants.

	Office Workers (n=60)	Truck Drivers (n=60)
Sex, n(%)
Male	40 (66.7	40 (66.7)
Female	20 (33.3)	20 (33.3)
Age [Years], mean ± SD	30.3 ± 8.0	33.5 ± 5.7
BMI [kg/m²], mean ± SD	22.8 ± 3.4	24.3 ± 3.2
Cigarettes smoked during Examination time, mean ± SD	0.5 ± 1.7	2.3 ± 4.2
Usage of central heating, n(%)
Yes	6 (10.0)	16 (26.7)
No	54 (90.0)	44 (73.3)
Personal PM_2.5, mean ± SD	94.6 ± 64.9	126.8 ± 68.8