Table 3.

Conditional Probability of Class Membership for Alternative Tobacco Awareness and Harm Perception Classes (N_u = 13,650)

	Class 1 Perceives harm across all alternative tobacco products	Class 2 Perceives harm for e-cigarettes /smoke- less tobacco but never heard of cigars/hookah	Class 3 Never heard of any alternative tobacco products	Class 4 Mix of no harm/ any harm	Class 5 “Don’t know harm”
	(36.6%, N = 4992)	(48.2%, N = 6581)	(8.6%, N = 1170)	(5.2%, N = 710)	(1.4%, N = 197)
E-Cigarettes
Never heard of product	0.02	0.07	0.65	0.01	0.03
“Don’t know”	0.01	0.02	0.02	0.00	0.56
No harm	0.05	0.03	0.06	0.44	0.03
Any harm	0.92	0.89	0.27	0.55	0.37
Cigars
Never heard of product	0.09	0.53	0.86	0.16	0.46
“Don’t know”	0.00	0.00	0.00	0.13	0.34
No harm	0.08	0.00	0.01	0.31	0.03
Any harm	0.84	0.46	0.13	0.41	0.18
Hookah
Never heard of product	0.16	0.51	0.88	0.23	0.29
“Don’t know”	0.01	0.00	0.01	0.00	0.54
No harm	0.01	0.01	0.01	0.32	0.01
Any harm	0.82	0.48	0.10	0.46	0.16
Smokeless Tobacco
Never heard of product	0.06	0.26	0.82	0.29	0.21
“Don’t know”	0.00	0.00	0.01	0.00	0.44
No harm	0.00	0.00	0.00	0.11	0.01
Any harm	0.94	0.73	0.17	0.60	0.34

Note. “Any harm” category included “little harm,” “some harm,” and “a lot of harm.”