An experimental study of the effects of electronic cigarette warnings on young adult nonsmokers’ perceptions and behavioral intentions

Table 5 Comparisons of least square means for perceptions of cigarettes and behavioral intentions to smoke cigarettes based on main effects for ad/warning condition, e-cigarette brand, and cigarette brand

	Perceived harms of cigarettes		Perceived addictiveness of cigarettes		Perceived harms of cigarettes relative to e-cigarettes		Perceived addictiveness of cigarettes relative to e-cigarettes		Intentions to smoke cigarettes
	M	SE	M	SE	M	SE	M	SE	M	SE
Ad/Warning condition
Ad only^a	3.89	0.04	3.81	0.04	4.30^C	0.06	3.84	0.07	1.30	0.04
Ad with warning^b	3.89	0.03	3.84	0.04	4.17	0.06	3.78	0.07	1.22	0.04
Warning only^c	3.84	0.04	3.80	0.04	3.99^A	0.06	3.61	0.07	1.23	0.04
E-cigarette brand
Blu^D	3.87	0.04	3.77	0.04	4.24	0.07	3.78	0.07	1.26	0.04
MarkTen^E	3.86	0.03	3.80	0.04	4.10	0.06	3.76	0.07	1.21	0.04
Vuse^F	3.90	0.03	3.87	0.04	4.12	0.06	3.69	0.07	1.28	0.04
Cigarette brand
Camel^G	3.84	0.03	3.82	0.04	4.11	0.06	3.69	0.07	1.22^I	0.04
Marlboro^H	3.90	0.04	3.81	0.04	4.17	0.06	3.75	0.07	1.19	0.04
Newport^I	3.87	0.03	3.81	0.04	4.18	0.06	3.79	0.07	1.34^G	0.04

Note: Covariates included ever e-cigarette use, e-cigarette advertising exposure, and prior cigarette smoking. Means with different superscript letters within a column differ significantly at p < .05 in pair-wise comparisons after Tukey’s adjustment for multiple comparisons.

ISSN: 1617-9625