Table 3.

Risk factors of tobacco use among youths in northeast India, 2012-2013.

	Any tobacco			Smokeless tobacco			Smoking tobacco
	Odds ratio	[95% CI]		Odds ratio	[95% CI]		Odds ratio	[95% CI]
Null model
Constant	0.32∗∗∗	0.30	0.33	0.13∗∗∗	0.12	0.14	0.15∗∗∗	0.14	0.16
Household level
Var(cons)	2.23	1.97	2.51	3.33	2.93	3.80	0.84	0.63	1.08
Probability	0.24			0.12			0.13
ICC	0.40			0.50			0.20
Models with explanatory variables
Constant	0.38∗∗∗	0.33	0.43	0.14∗∗∗	0.12	0.17	0.21∗∗∗	0.18	0.23
Age
15–19
20–24	2.84∗∗∗	2.57	3.13	2.30∗∗∗	2.05	2.55	2.59∗∗∗	2.31	2.92
Gender
Male
Female	0.19∗∗∗	0.17	0.21	0.62∗∗∗	0.56	0.67	0.05∗∗∗	0.04	0.06
Attending school
No
Yes	0.22∗∗∗	0.20	0.25	0.30∗∗∗	0.26	0.34	0.28∗∗∗	0.24	0.32
Place of residence
Urban
Rural	1.01	0.92	1.11	0.99	0.89	1.11	1.15∗∗	1.03	1.28
Wealth index
Low
Medium	0.89∗	0.79	0.99	0.91∗	0.81	1.01	0.87∗∗	0.77	0.98
High	0.78∗∗∗	0.70	0.87	0.71∗∗∗	0.62	0.79	0.86∗∗	0.76	0.96
Mother use of tobacco	3.44∗∗∗	3.10	3.84	1.59∗∗∗	1.35	1.86	2.52∗∗∗	2.17	2.93
Father use of tobacco	1.14∗∗	1.04	1.25	1.08	0.95	1.20	1.54∗∗∗	1.38	1.71
Level of household
Var(cons)	3.26	2.94	3.66	3.88	3.38	4.40	2.11	1.78	2.43
Probability	0.28			0.12			0.17
ICC	0.50			0.54			0.39

Note. The probability of using tobacco in the average household. ICC: intraclass correlation coefficient, ^∗∗∗p < 0.001, ^∗∗p < 0.01, ^∗p < 0.05.