Table 1.

Demographic data and psychological traits of the participants in each group.

Characteristic	Propranolol	Placebo	P
	n = 27	n = 25
	Mean (SD)	Mean (SD)
Age (years)	27.89 (6.69)	28.24 (7.94)	0.83
Education (years)	14.38 (2.73)	13.79 (1.44)	0.40
BMI	23.78 (3.34)	22.33 (2.94)	0.49
Age when first smoked	18.69 (3.0)	19 (3.5)	0.74
Duration of smoking (years)	9.63 (6.95)	8.96 (7.33)	0.72
Cigarettes per day	13.4 (6.1)	15.1 (8.4)	0.48
FNDT score	5.08 (1.38)	5.48 (1.81)	0.37
BDI score	4.19 (4.85)	5.08 (6.56)	0.58
SAS score	32.92 (8.48)	33.16 (8.33)	0.92
BIS score	47.92 (17.48)	48.64 (14.49)	0.87

BMI body mass index, BDI Beck Depression Inventory, FNDT Fagerstrom Nicotine Dependence Test, SAS self-rating Anxiety Scale, BIS Barratt Impulsivity Scale.

The data are expressed as mean ± standard deviation.