Table 1.

Associations of Conditions and E-cigarette Use Status on Ad and Product Attitudes

Measure			M (SE)	F	p-value
Youth
Attitudes toward the ads	Condition	Financial disclosure-only	2.61 (0.12)	F(3,381) = 0.212	.888
		Warning label only	2.50 (0.08)
		No financial disclosure or warning label	2.55 (0.09)
		Both a financial disclosure + warning label	2.57 (0.19)
	E-cigarette use	Never user*	2.04 (0.05)	F(2,381) = 69.693	<.001
		Ever user*	2.58 (0.13)
		Current user*	3.05 (0.07)
	Condition × E-cigarette use			F(6,381) = 0.873	.515
Attitudes toward the product	Condition	Financial disclosure-only	2.43 (0.12)	F(3,381) = 0.240	.868
		Warning label only	2.33 (0.08)
		No financial disclosure or warning label	2.42 (0.09)
		Both a financial disclosure + warning label	2.37 (0.11)
	E-cigarette use	Never user*	1.56 (0.05)	F(2,381) = 189.694	<.001
		Ever user*	2.36 (0.13)
		Current user*	3.24 (0.07)
	Condition × E-cigarette use			F(6,381) = 1.821	.094
Young adults
Attitudes toward the ads	Condition	Financial disclosure-only*	2.75 (0.07)	F(3,853) = 3.049	.028
		Warning label only	2.56 (0.07)
		No financial disclosure or warning label	2.56 (0.07)
		Both a financial disclosure + warning label*	2.46 (0.07)
	E-cigarette use*	Never user*	2.12 (0.07)	F(2,853) = 88.930	<.001
		Ever user*	2.49 (0.06)
		Current user*	3.15 (0.04)
	Condition × E-cigarette use			F(6,853) = 1.077	.375
Attitudes toward the product	Condition*	Financial disclosure-only*	2.51 (0.07)	F(3,853) = 3.421	.017
		Warning label only*	2.29 (0.07)
		No financial disclosure or warning label*	2.24 (0.07)
		Both a financial disclosure + warning label*	2.22 (0.07)
	E-cigarette use	Never user*	1.61 (0.07)	F(2,853) = 193.855	<.001
		Ever user*	2.16 (0.06)
		Current user*	3.17 (0.05)
	Condition × E-cigarette use			F(6,853) = 0.872	.515

Positive attitudes were measured on a scale of 1 (Strongly disagree) to 5 (Strongly agree), with higher mean scores indicating stronger positive attitudes. Models adjusted for covariates (age, sex, race, ethnicity, and income). M = mean, SE = standard error. Pairwise comparisons showed statistically significant differences in attitudes toward the ad and product across all three e-cigarette user groups for youth and young adults. Pairwise comparisons showed statistically significant differences in the conditions on outcomes in young adults. Young adults in the financial disclosure-only condition reported significantly higher mean scores on attitudes toward the ad than those in the both a financial disclosure + warning label condition. Young adults in the financial disclosure-only condition reported significantly higher mean scores on attitudes toward the product than those in any other condition.

^*Denotes statistically significant differences at .05.