Table 1.

Description of the study population in the total study period, and before and after the introduction of the partial PoS display ban in England (unweighted data)

	Prevalence (%) with 95% CI
	Total study period (January 2009—February 2015)	Prepartial PoS ban (January 2009—March 2012)	Postpartial PoS ban (April 2012—February 2015)
In the total population, N	131 552	71 405	60 147
Age (years)
18–24	12.6, 12.4 to 12.8	11.3, 11.1 to 11.6	14.1, 13.8 to 14.3
25–34	16.4, 16.2 to 16.6	16.5, 16.2 to 16.8	16.2, 15.9 to 16.5
35–44	16.5, 16.3 to 16.7	17.5, 17.2 to 17.7	15.4, 15.1 to 15.7
45–54	15.6, 15.4 to 15.8	15.9, 15.6 to 16.2	15.2, 14.9 to 15.5
55–64	14.5, 14.3 to 14.7	14.4, 14.2 to 14.7	14.5, 14.3 to 14.8
65+	24.5, 24.3 to 24.7	24.4, 24.1 to 24.7	24.6, 24.2 to 24.9
Sex
Female	51.9, 51.6 to 52.2	53.3, 52.9 to 53.6	50.2, 49.8 to 50.6
Male	48.1, 47.8 to 48.4	46.7, 46.4 to 47.1	49.8, 49.4 to 50.2
Social grade
Professional/managerial (AB)	20.0, 19.8 to 20.2	19.8, 19.5 to 20.1	20.2, 19.9 to 20.5
Clerical (C1)	28.0, 27.8 to 28.2	26.8, 26.5 to 27.1	29.4, 29.1 to 29.8
Skilled manual (C2)	20.5, 20.3 to 20.7	19.8, 19.5 to 20.1	21.2, 20.9 to 21.6
Semiskilled manual (D)	15.2, 15.0 to 15.4	15.0, 14.7 to 15.3	15.4, 15.1 to 15.7
Very low paid or unemployed (E)	16.4, 16.2 to 16.6	18.6, 18.3 to 18.9	13.7, 13.4 to 14.0
E-cigarette prevalence*	1.84, 1.83 to 1.86	0.23, 0.22 to 0.23	3.77, 3.76 to 3.78
Current smoking
Never-smoker or ex-smoker	77.9, 77.7 to 78.2	76.8, 76.5 to 77.1	79.3, 78.9 to 79.6
Current smoker	22.1, 21.8 to 22.3	23.2, 22.9 to 23.5	20.7, 20.4 to 21.1
In current smokers, N	28 053	16 005	12 048
Cigarette consumption (cigarettes per day)*	12.3, 12.2 to 12.4	12.8, 12.7–12.9	11.6, 11.4 to 11.7

*Mean, 95% CI.

PoS, point of sale.