Table 2

Sociodemographic characteristics by quitting cigarettes in wave 4

Characteristics	Quitting cigarettes				P value*	aOR (95% CI)
	Yes		No
	n	%	n	%
Sex
Male	33	15.1	173	84.9	0.576	1 (Ref)
Female	53	16.9	273	83.1	0.576	1.03 (0.48 to 2.19)
Age (years)
≥45	44	14.2	276	85.8	0.31	1 (Ref)
35–44	17	16.7	76	83.3		1.82 (0.73 to 4.59)
25–34	19	22.3	74	77.7		3.42 (1.27 to 9.21)
18–24	6	17.9	20	82.1		2.85 (0.49 to 16.6)
Race/ethnicity
Non-Hispanic white	64	16.5	312	83.5	0.861	1 (Ref)
Non-Hispanic black	12	13.8	68	86.2		1.32 (0.49 to 3.52)
Other	10	15.9	66	84.1		1.24 (0.35 to 4.32)
Education level
Less than high school/GED	21	16.3	120	83.7	0.583	1 (Ref)
High school graduate	12	12.5	96	87.5		2.16 (0.51 to 9.19)
Beyond high school	53	17.5	229	82.5		2.19 (0.70 to 6.84)
Income ($)
<50 000	61	18.1	294	81.9	0.093	1 (Ref)
≥50 000	19	11.1	131	88.9	0.093	0.65 (0.23 to 1.86)
Marital status
Married	35	18.9	173	81.1	0.373	1 (Ref)
Widowed	29	14.2	163	85.8		0.95 (0.42 to 2.14)
Never married	21	13.8	106	86.2		0.54 (0.17 to 1.73)
Relying on friend/family support to quit
No	43	15.3	242	84.7	0.584	1 (Ref)
Yes	43	17.1	1203	82.9	0.584	0.97 (0.44 to 2.14)
Living with smokers
No	37	18.3	158	81.7	0.361	1 (Ref)
Yes	33	14.6	209	85.4	0.361	0.58 (0.28 to 1.21)
Used quitting method
ENDS	14	16.2	61	83.8	0.976	1 (Ref)
NRT	47	16.1	242	83.9		1.54 (0.50 to 4.72)
Medication	13	17.7	55	82.3		0.87 (0.15 to 5.05)
NRT+medication	12	14.8	88	85.2		1.72 (0.39 to 7.61)
	Mean (SE)		Mean (SE)
Motivation to quit cigarettes	8.00 (0.36)		8.32 (0.14)		0.435	1.01 (0.85 to 1.20)
Cigarette dependence in wave 3	2.95 (0.12)		3.25 (0.07)		0.021	0.82 (0.58 to 1.17)
Total	86	16.1	446	83.9

*χ² test (bivariate association).
aOR, adjusted OR; ENDS, electronic nicotine delivery system; NRT, nicotine replacement therapy; Ref, reference.