Table 3.

Association between e-cigarette warning exposure and e-cigarette perceptions.

	Prevalence and odds of perceiving e-cigarettes to cause at least some harm to users, among all respondents					Prevalence and odds of perceiving e-cigarette addiction to be at least somewhat likely					Prevalence and odds of perceiving e-cigarettes to be as harmful or more harmful than cigarettes
	%	AOR	95%CI		p-value	%	AOR	95% CI		p-value	%	AOR	95% CI		p-value
Warning exposure
Yes	57.0	1.19	1.01	1.40	0.037	60.6	1.43	1.22	1.66	<0.001	26.8	1.45	1.22	1.73	<0.001
No/Don't know	60.4	ref				54.4	ref				21.8	ref
Country
Canada	65.1	ref				49.6	ref				23.6	ref
US	64.0	1.01	0.89	1.15	0.838	60.2	1.55	1.39	1.74	<0.001	28.5	1.33	1.16	1.53	<0.001
England	50.7	0.54	0.48	0.61	<0.001	55.4	1.28	1.14	1.44	<0.001	15.4	0.57	0.48	0.67	<0.001
Sex
Male	57.9	0.87	0.79	0.96	0.004	52.5	0.81	0.74	0.88	<0.001	23.2	1.10	0.98	1.23	0.105
Female	62.4	ref				58.1	ref				21.7	ref
Age
16–17	65.0	1.41	1.28	1.56	<0.001	56.3	1.05	0.96	1.15	0.269	24.9	1.35	1.21	1.52	<0.001
18–19	55.7	ref				54.1	ref				20.4	ref
Race/ethnicity
White	60.4	1.28	1.15	1.43	<0.001	56.6	1.23	1.15	1.36	<0.001	22.1	0.98	0.86	1.11	0.726
Other/mixed	58.7	ref				52.1	ref				23.3	ref
Past 30 day tobacco status
Exclusive cigarette user	47.7	0.53	0.43	0.65	<0.001	41.9	0.51	0.42	0.62	<0.001	25.7	1.29	1.02	1.64	0.036
Exclusive e-cigarette user	31.8	0.24	0.18	0.30	<0.001	44.2	0.53	0.42	0.67	<0.001	10.0	0.33	0.22	0.49	<0.001
Dual cigarette/ e-cigarette user	32.7	0.25	0.20	0.33	<0.001	49.2	0.61	0.48	0.77	<0.001	19.0	0.70	0.52	0.95	0.021
Non-user of either product	65.3	ref				57.9	ref				23.1	ref