Table 2.

Time-Dependent tobacco exposure variable by wave (n=43,290 observations)

	Wave 1 (n=8928)
Time varying poly tobacco use variable	%	95% CI	n
Non use	95.1	[94.6, 95.5]	8485
Exclusive cigarette use	1.5	[1.2, 1.8]	132
Exclusive e-cigarette use	1.1	[0.9, 1.3]	91
Exclusive other combustible use	0.7	[0.5, 0.9]	66
Dual use of cigarettes + ENDS/ Dual use of ENDS + OC	0.7	[0.6, 0.9]	64
Dual use of cigarettes + other combustibles	0.5	[0.4, 0.7]	48
Poly use of cigarettes+ ENDS + OC	0.4	[0.3, 0.6]	43
	Wave 2 (n=8,271)
Non use	95.0	[94.5, 95.5]	7855
Exclusive cigarette use	1.3	[1.1, 1.6]	113
Exclusive e-cigarette use	1.4	[1.2, 1.7]	114
Exclusive other combustible use	0.8	[0.6, 1.0]	68
Dual use of cigarettes + ENDS/ Dual use of ENDS + OC	0.7	[0.5, 0.9]	59
Dual use of cigarettes + other combustibles	0.5	[0.3, 0.6]	40
Poly use of cigarettes+ ENDS + OC	0.3	[0.2, 0.4]	22
	Wave 3 (n=7,825)
Non use	95.6	[95.1, 96.1]	7469
Exclusive cigarette use	0.9	[0.7, 1.2]	70
Exclusive e-cigarette use	1.9	[1.6, 2.2]	151
Exclusive other combustible use	0.4	[0.3, 0.6]	38
Dual use of cigarettes + ENDS/ Dual use of ENDS + OC	0.6	[0.5, 0.9]	54
Dual use of cigarettes + other combustibles	0.3	[0.2, 0.5]	27
Poly use of cigarettes+ ENDS + OC	0.2	[0.1, 0.3]	16
	Wave 4 (n=9,614)
Non use	95.6	[95.1, 96.0]	9192
Exclusive cigarette use	1.0	[0.8, 1.2]	99
Exclusive e-cigarette use	2.0	[1.7, 2.4]	178
Exclusive other combustible use	0.4	[0.3, 0.6]	41
Dual use of cigarettes + ENDS/ Dual use of ENDS + OC	0.6	[0.5, 0.8]	64
Dual use of cigarettes + other combustibles	0.2	[0.1, 0.3]	19
Poly use of cigarettes+ ENDS + OC	0.2	[0.1, 0.3]	21
	Wave 4.5 (n=8,652)
	%	95% CI	n
Non use	93.8	[93.3, 94.4]	8108
Exclusive cigarette use	0.8	[0.6, 1.0]	75
Exclusive e-cigarette use	3.8	[3.4, 4.3]	328
Exclusive other combustible use	0.3	[0.2, 0.4]	26
Dual use of cigarettes + ENDS/ Dual use of ENDS + OC	0.8	[0.6, 1.0]	72
Dual use of cigarettes + other combustibles	0.2	[0.1, 0.3]	18
Poly use of cigarettes+ ENDS + OC	0.3	[0.2, 0.4]	25