Table 1.

Sample demographics and ECIG/tobacco use characteristics (n=72).

Characteristic	N	%
Age (M, SD)		34.5(11.4)
Sex
Female	30	41.7
Male	40	55.6
Transgender	2	2.8
Ethnicity
Hispanic/Latino	11	15.3
Not Hispanic / Latino	61	84.7
Race
American Indian / Alaskan Native	2	2.8
Asian	2	2.8
Black / African American	9	12.5
White / European American	53	73.6
More than one race	6	8.3
Regular ECIG Use Duration
1 – 3 months	6	8.3
4 – 6 months	7	9.7
7 – 12 months	18	25.0
Between 1 and 2 years	19	26.4
More than 2 years	22	30.6
ECIG Use in Past 30 Days
6 – 10 days	5	6.9
11 – 20 days	7	9.7
21 – 29 days	13	18.1
All 30 days	32	44.4
ECIG Use Times per Day
At least once per day	5	6.9
Every once in a while throughout the day	20	27.8
Fairly frequently throughout the day	33	45.8
Almost always throughout most of the day	14	19.4
Nicotine Concentration
Zero (0mg / mL)	4	5.6
3 – 4 mg / mL	16	22.2
6 – 8 mg / mL	17	23.6
11 – 19 mg / mL	17	23.6
20 mg / mL or greater	15	20.8
Don’t know	3	4.2
Type of Liquid Storage
Prefilled disposable / Cig-alike	20	27.8
Refillable cartomizer	7	9.7
Refillable tank or clearomizer	32	44.4
Drip feed / Use drip tip	10	13.9
Don’t know / Other	3	1.4
Device Type
Cig-alike	18	25.0
Vape pen / eGo style product	24	33.3
Box mod	22	30.6
Rebuildable / Mechanical mod	8	11.1
ECIG Liquid Flavor Preference
Candy / Fruit flavor	22	30.6
Food / Dessert / Spices flavor (e.g., crème, vanilla, cinnamon)	7	9.7
Menthol flavor	9	12.5
Tobacco flavor	16	22.2
I usually use multiple flavors	15	20.8
I don’t use a flavor	2	2.8
Current cigarette smoking frequency
Every day	23	31.9
Some days	26	36.1
Not at all	23	31.9
Cigarettes per day (M, SD)
12 months ago		10.7 (11.8)
Past 30 days		5.5 (6.5)

Note. Regular use was defined as using an ECIG some days or most days.