Table 4.

Composite estimates by survey pair, cohort, and outcome measures.

Survey pair, cohort, and outcome				Composite
				Factor (α)		Estimate, %
Pair 1
	15-17 (n=2039)
		Cigarette	.80		2.9
		e-Cigarette	.61		9.1
	18-24 (n=5110)
		Cigarette	.75		10.5
		e-Cigarette	.64		18.7
	15-24 (n=7149)
		Cigarette	.76		8.1
		e-Cigarette	.64		15.7
Pair 2
	15-17 (n=1534)
		Cigarette	.74		2.5
		e-Cigarette	.52		10.4
	18-24 (n=3895)
		Cigarette	.56		13.6
		e-Cigarette	.41		23.3
	15-24 (n=5429)
		Cigarette	.58		10.1
		e-Cigarette	.43		19.4
Pair 3
	15-17 (1412)
		Cigarette	.56		4.2
		e-Cigarette	.66		8.0
	18-24 (3342)
		Cigarette	.55		22.9
		e-Cigarette	.00		0.0
	15-24 (4754)
		Cigarette	.70		9.7
		e-Cigarette	.57		18.3