Table 1. Subject Characteristics.

	Varenicline (N=18)	Placebo (N=20)	p-Value
Age (years), mean±SD	22.4±4.33	22.7±2.98	0.864
Sex, % female	55.6	50.0	0.732
Occupation, %			0.485
(PhD)-student	88.9	95.0
Other	11.1	5.0
Body weight (kg), mean±SD	66.29±10.46	66.68±6.92	0.894
Body mass index, mean±SD	22.8±2.33	22.6±1.96	0.782
BDI baseline, mean±SD	2.00±3.53	1.80±2.10	0.833
BDI endpoint, mean±SD	2.17±3.81	2.30±3.26	0.909

Abbreviation: BDI, Beck depression inventory.