Table 1.

The participants' baseline characteristics in the intervention and control groups

	Intervention group (5 workplaces, n=29)	Control group (6 workplaces, n=30)	p value
The data are expressed as the mean ± standard deviation and the number of participants.
Age (years)	40.8±9.8	41.1±8.6	0.910
Sex (males/females; n, %)	19 (65.5)/10 (34.5)	21 (70.0)/9 (30.0)	0.713
Taking medications (n, %)	3 (10.3)	4 (13.3)	0.723
Smoking (n, %)	8 (27.6)	7 (23.3)	0.708
Alcohol (n, %)	22 (75.8)	17 (56.7)	0.119