eTable 5. Sample size and 30-day prevalence [95% confidence interval] of the use of conventional tobacco products and alternative products (from 2015) by survey year and gender; age 40–59 years.

			Conventional tobacco		E-cigarette		Waterpipe		Heat-not-burn product
	Survey year	ncc	%	95% CI	%	95% CI	%	95% CI	%	95% CI
Women	1995	1992	21.5	[19.6; 23.6]	–	–	–	–	–	–
	1997	1960	22.9	[20.5; 25.5]	–	–	–	–	–	–
	2000	2118	25.1	[22.9; 27.5]	–	–	–	–	–	–
	2003	1737	27.0	[24.6; 29.5]	–	–	–	–	–	–
	2006	1608	26.5	[24.2; 28.9]	–	–	–	–	–	–
	2009	1453	24.0	[21.9; 26.4]	–	–	–	–	–	–
	2012	1990	24.5	[22.4; 26.8]	–	–	–	–	–	–
	2015	1834	23.3	[21.5; 25.4]	1.2	[0.8; 1.8]	–	–	–	–
	2018	1712	17.5	[15.6; 19.7]	0.6	[0.3; 1.1]	0.5	[0.2; 1.0]	0.2	[0.0; 0.6]
	2021	1801	16.9	[15.1; 18.8]	2.2	[1.5; 3.1]	0.6	[0.3; 1.2]	1.2	[0.7; 1.9]
Men	1995	1800	35.8	[33.3; 38.4]	–	–	–	–	–	–
	1997	1781	38.9	[35.7; 42.1]	–	–	–	–	–	–
	2000	1938	34.9	[32.5; 37.3]	–	–	–	–	–	–
	2003	1577	34.4	[31.9; 37.1]	–	–	–	–	–	–
	2006	1278	34.5	[31.9; 37.2]	–	–	–	–	–	–
	2009	1180	31.0	[28.4; 33.7]	–	–	–	–	–	–
	2012	1543	27.8	[25.7; 30.0]	–	–	–	–	–	–
	2015	1395	26.4	[24.2; 28.8]	1.7	[1.2; 2.6]	–	–	–	–
	2018	1369	23.4	[21.0; 26.0]	2.2	[1.5; 3.3]	1.3	[0.7; 2.4]	0.8	[0.4; 1.6]
	2021	1298	21.9	[19.6; 24.5]	2.7	[1.9; 3.8]	0.9	[0.5; 1.6]	1.1	[0.6; 2.0]

ncc, Unweighted sample size with complete information for all variables; CI, confidence interval