Table 1.

Socio-demographic characteristics among all participants (N = 3503) and only those who made quit attempts (n = 1379).

	All participants		Only quit attempters
	Percent	95% CI	Percent	95% CI
Index of Relative Socio-Economic Disadvantage (IRSD)
Lowest disadvantage	14.6	13.4 – 15.8	14.7	12.9 – 16.6
Low disadvantage	18.6	17.3 – 19.9	19.4	17.3 – 21.4
Moderate disadvantage	19.9	18.5 – 21.2	20.0	17.9 – 22.1
High disadvantage	22.0	20.6 – 23.4	22.0	19.9 – 24.2
Highest disadvantage	25.0	23.5 – 26.4	23.9	21.6 – 26.1
Main language spoken at home
English	88.1	87.0 – 89.2	88.8	87.2 – 90.5
Not English	11.8	10.7 – 12.9	11.1	9.4 – 12.8
Equivalized household income
Low	20.6	19.3 – 22.0	20.6	18.5 – 22.7
Low-moderate	17.2	16.0 – 18.5	16.0	14.1 – 18.0
Moderate	19.1	17.8 – 20.4	18.4	16.4 – 20.5
High-moderate	18.8	17.5 – 20.1	19.2	17.1 – 21.3
High	18.1	16.8 – 19.3	19.9	17.8 – 22.0
Not disclosed	6.2	5.4 – 7.0	5.9	4.6 – 7.1
Education
Low	64.5	62.9 – 66.1	61.9	59.4 – 64.5
Moderate	21.7	20.3 – 23.1	22.6	20.4 – 24.8
High	13.7	12.5 – 14.8	15.2	13.3 – 17.1
Marital Status
Married	38.1	36.4 – 39.7	34.5	32.0 – 37.0
Separated/ divorced/ widowed	21.2	19.9 – 22.6	21.0	18.8 – 23.1
DeFacto	13.3	12.2 – 14.4	14.9	13.1 – 16.8
Single	25.2	23.8 – 26.6	26.3	23.9 – 28.6
Smoking-induced deprivationa
No	57.4 (65.9)	55.7 – 59.0	50.9 (60.2)	48.3 – 53.5
Yes	29.7 (34.1)	28.2 – 31.2	33.6 (39.8)	31.2 – 36.1
Missing	12.9	11.8 – 14.0	15.4	13.5 – 17.4
Age group (years)
18 – 24	12.0	10.9 – 13.1	15.0	13.1 – 16.9
25 – 39	33.4	31.8 – 35.0	35.2	32.7 – 37.7
40 – 54	37.0	35.4 – 38.6	32.6	30.1 – 35.0
55 and older	17.6	16.4 – 18.9	17.3	15.3 – 19.3
Sex
Female	54.8	53.2 – 56.5	55.6	53.0 – 58.2
Male	45.2	43.5 – 46.8	44.4	41.8 – 47.0

Note: Data was missing for < 5% of the total sample on the following variables: Main language spoken at home (0.1%); Education (0.1%); and Marital status (2.2%).

^aFigures in brackets refer to percentages within the non-missing sample only.