TABLE 1.

Patient demographics

Characteristic	Value for:
	Cigarette smokers	E-cigarette users	Nonsmokers
No.	27	28	29
Sex (% male)	81.48	78.57	55.17
Age (yrs), mean (SD)
Female	51 (10.3)	39.7 (11.3)	38.9 (14.9)
Male	48.2 (9.51)	35.8 (10.3)	28.6 (7.05)
Ethnicity (% Hispanic)	7.41	17.86	24.14
Race (%)
White	33.33	57.14	27.59
Black	59.26	35.71	31.03
Asian	3.70	7.14	37.93
Other	3.70	0.00	3.45