Table 1:

Demographic and Clinical Variables

	N=16
Age, mean (SD)	24.8 (3.65)
Sex, N (%)
Male	12 (75.0)
Female	4 (25.0)
PSCDI Score,* mean (SD)	14.8 (3.8)
Typical electronic cigarette nicotine concentration (mg/ml), mean (SD)	7.13 (5.2)
Typical electronic cigarette nicotine wattage, mean (SD)	64.5 (33.4)
Milligrams of electronic cigarette liquid per day, mean (SD)	6.6 (7.5)
Years of electronic cigarette use, mean (SD)	2.7 (1.8)
Use of other tobacco products in the past month
Conventional Tobacco Cigarettes, N (%)	2 (12.5)
Chewing Tobacco	1 (6.3)
Hookah	1 (6.3)

^*PSCDI= Penn State Cigarette Dependence Index (Foulds et al., 2015)