Table 1:

Unweighted sample characteristics by country (Aug 2013-Mar 2015), n=7746.

	RESPONDENTS IN ALL FOUR COUNTRIES (n=7746)				RESPONDENTS INCLUDED IN THE ANALYZES (n=3460)
	Canada % (n=1592)	US % (n=3208)	UK % (n=1470)	Australia % (n=1476)	Canada % (n=475)	US % (n=1799)	UK % (n=734)	Australia % (n=452)
Sex
Female	53.0	51.7	52.6	53.7	53.5	54.3	54.0	56.9
Male	47.0	48.3	47.4	46.3	46.5	45.7	46.0	43.1
Age
18–24	1.2	5.2	2.4	2.8	1.9	7.1	3.5	5.1
25–39	12.8	20.0	19.0	15.7	21.3	24.1	22.1	19.0
40–54	34.7	26.6	32.2	36.9	35.8	27.6	35.3	38.3
55+	51.3	48.2	46.5	44.6	41.1	41.2	39.1	37.6
Ethnicity
White	92.5	77.6	92.7	91.7	92.2	78.2	93.2	92.9
Non- white	7.5	22.4	6.7	7.7	7.8	21.8	6.8	7.1
Education
Low	38.3	39.8	47.1	46.3	34.9	38.1	43.6	42.0
Medium	39.5	39.2	27.9	31.9	44.2	42.1	28.9	37.2
High	21.6	21.0	23.7	21.1	20.8	19.8	27.5	20.8
Income
Low	22.4	37.3	30.3	26.4	17.5	36.6	25.3	25.7
Medium	34.2	29.2	29.8	26.4	36.8	28.9	30.9	27.0
High	34.2	31.3	31.6	38.1	36.8	32.6	36.1	38.5
No answer	9.2	2.2	8.3	9.1	8.8	1.8	7.6	8.8
E-cigarette status
Not at all	21.7	29.8	9.4	19.8	72.8	53.0	46.2	63.5
Daily	1.8	6.8	6.0	2.4	6.1	12.2	18.3	7.7
Weekly	1.9	6.5	12.1	1.5	6.5	11.7	11.6	4.6
Monthly	4.3	13.0	23.3	7.4	14.5	23.1	24.0	24.1
Smoking status
Quitter	24.1	18.6	23.1	26.2	12.0	14.6	16.1	11.7
Daily	70.9	68.5	70.7	68.1	81.9	72.2	77.1	80.5
Non-daily	5.1	12.8	6.2	5.8	6.1	13.2	6.8	7.7
Survey mode
Telephone	42.1	19.5	35.6	25.8	39.2	14.6	32.7	25.9
Internet	57.9	80.5	64.4	74.2	60.8	85.4	67.3	74.1