Table 1.

Characteristics of Young Adult Past Year Cigarette Smokers by Past Year Use of E-cigarettes

Characteristic	Past year smokers without past year e-cigarette use % (N=2,916)	Past year smokers with past year e- cigarette use % (N=571)	OR (95% CI) (ref=no e- cigarettes)
Age, years
18–25	39.6	46.8	1.34 (1.10, 1.63)
26–35	60.4	53.2	1.00
Sex
Male	53.6	60.5	1.33 (1.06, 1.67)
Female	46.4	39.5	1.00
Race/Ethnicity
White	66.3	73.8	1.00
Black	12.6	6.4	0.45 (0.33, 0.62)
Hispanic	15.8	11.3	0.64 (0.47, 0.88)
Other	5.3	8.6	1.44 (0.94, 2.21)
Education (at interview)
Less than high school	18.4	12.0	0.58 (0.40, 0.84)
High school	23.7	23.4	0.89 (0.70, 1.12)
At least some college	57.9	64.6	1.00
Personal income
$0–$19,999	57.7	61.0	1.24 (0.89, 1.73)
$20,000–$39,999	29.0	27.7	1.12(0.77, 1.63)
≥$40,000	13.3	11.4	1.00
Marital status
Married or cohabiting	42.2	35.7	1.00
Widowed, separated,	9.5	11.0	1.37 (0.89, 2.09)
divorced
Never married	48.3	53.3	1.30 (1.01, 1.68)
Behavioral health disorders
Drug use disorder, lifetime	28.3	38.0	1.55 (1.25, 11.92)
Alcohol use disorder, lifetime	55.8	70.8	1.92 (1.56, 2.37)
Depressive disorder, lifetime	26.5	28.1	1.08 (0.85, 1.39)
Anxiety disorder, lifetime	22.0	25.6	1.22 (0.94, 1.59)
Tobacco use
Age (SD) started daily cigarette smoking, years	18.2 (7.9)	17.2 (3.4)	t=3.23, p=0.002
Heavy smoker, past year	3.8	5.9	1.57 (0.91, 2.70)
Tobacco use disorder, past year	75.1	89.9	2.96 (2.02, 4.34)
Mild	62.4	43.3	1.00
Moderate	21.1	24.0	1.64 (1.27, 2.11)
Severe	16.5	32.6	2.84 (2.23, 3.61)
Daily cigarette smoker, past year	69.3	78.4	1.61 (1.26, 2.05)
Mean (SD) number of cigarettes/day, past year	12.0 (8.0)	13.2 (7.6)	t=2.76, p=0.007

Note: Boldface indicates statistical significance (p<0.05). Data from NESARC-III. Results are unadjusted.

NESARC-III, National Epidemiologic Survey on Alcohol and Related Conditions-III.