. Author manuscript; available in PMC: 2020 May 1.

Published in final edited form as: Am J Prev Med. 2019 Mar 16;56(5):655–663. doi: 10.1016/j.amepre.2018.12.004

Table 2.

Odds of Past Year Intensive Smoking Among Young Adult Past Year Smokers by Past Year Use of E-cigarettes

Past year e-cigarette use	Total sample (N=3,487)	Ages 18–25 years (N=1,282)	Ages 26–35 years (N=2,205)

	OR(95% CI)	OR (95% CI)	OR(95% CI)
Heavy smoking
Yes	1.53 (0.88, 2.68)	0.98 (0.38, 2.53)	2.01 (1.09, 3.74)
No	1.00	1.00	1.00
Tobacco use disorder
Yes	2.58 (1.73, 3.83)	1.80 (1.12, 2.87)	3.55 (2.03, 6.19)
No	1.00	1.00	1.00
Daily cigarette smoker
Yes	1.67 (1.29, 2.16)	1.22 (0.84, 1.77)	2.27 (1.52, 3.38)
No	1.00	1.00	1.00
Number of daily cigarettes, β (95% CI)	0.65 (−0.12, 1.41)	−0.11 (−1.19, 0.96)	1.36 (0.14, 2.58)

Note: Boldface indicates statistical significance (p<0.05). Data from NESARC-III. All regressions are controlled for age, sex, race/ethnicity, education, personal income, marital status, behavioral health disorder, and age started cigarette smoking.

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