Table 2.

Baseline smoking characteristics by product use, among those who made a quit attempt; TUS-CPS 2010–11 longitudinal sample

	E-cigarette use status			Pharmaceutical aid use status
	Ever used e-cigarettes for quitting	Ever used e-cigarettes for other purposes	Never used e-cigarettes	Used pharma aids at last quit attempt	No use of pharma aids at last quit attempt
Sample size	82	58	936	356	720
Cigarettes smoked/day (CPD)	14.9	11.5	11.8	14.1	11.1
Time to 1st cigarette < 30 min from waking (%)	44.8	38.7	31.6	41.7	29.5
Duration of Cigarette Use (years)	23.5	20.2	24.6	26.7	23.2
Smoking Before Age 16 (%)	29.3	20.9	15.4	24.5	13.7

Note: E-cigarette use status and pharmaceutical aid use status are not mutually exclusive. All data weighted to be representative of the U.S. population