Table 3.

Smoking behavior correlates of smoking in cars with nonsmokers (N = 6,755)^a,b

Variable	Sample characteristics	% Smoke in cars with nonsmokers	OR	95% CI of OR	p
	n (%)
Intentions to quit
In the next 30 days	758 (11)	29	1.00	1.00	Ref
In the next 6 months	1,459 (22)	30	1.06	0.82–1.37	.67
Sometime beyond 6 months	2,511 (37)	34	1.15	0.91–1.46	.23
Not planning to quit	1,947 (29)	39	1.52	1.19–1.94	.0008
Do not know	80 (1)	34	1.42	0.83–2.43	.21
Heaviness of Smoking Index
0—low dependence	831 (12)	22	1.33	1.26–1.39	<.0001
1	760 (11)	24
2	1,285 (19)	29
3	1,864 (28)	36
4	1,241 (19)	43
5	566 (8)	46
6—high dependence	208 (3)	50

Note. OR = odds ratio.

^aAll frequencies and data are weighted.

^bAdjusted for demographics in Table 1.