Table 2.

Baseline characteristics: acute exposure

	Nonsmokers	EC Vapers	TC Smokers	P Value
n	47	31	33
Mean age, yr	26.3 ± 5.2	27.2 ± 5.7	26.9 ± 4.9	0.69
Sex, men/women	22/25	21/10	20/13	0.17
Mean BMI, kg/m2	23.5 ± 2.9	23.8 ± 3.3	23.9 ± 2.8	0.90
Race, n				0.88
African American	4	1	4
Caucasian	26	18	19
Asian	9	8	8
Hispanic	5	4	2
Hawaiian	2	0	0
Unknown	1	0	0

Values are means ± SD. BMI, body mass index; EC, electronic cigarette; TC, tobacco cigarette.