Table 3.

Correlates of using varenicline versus using bupropion/using any stop-smoking medications (SSM)/using no SSM among smokers attempting to quit.

	Distribution among all quit attempters	Model A—among Rx SSM users				Model B—among SSM users				Model G—varenicline versus no SSM use
		n= 274 (82% used varenicline)				n = 481 (39% used varenicline)				n = 779 (28% used varenicline)
Correlates	%	n	% varenicline	OR	P	n	% varenicline	OR	P	n	%varenicline	OR	P
Sex
Female	59	163	85	Referent		297	40	Referent		450	30	Referent
Male	41	111	78	0.51	0.047	184	38	0.84	0.369	329	25	0.80	0.189
Age group (years)
18–24	4	3	75	Referent		10	19	Referent		35	8	Referent
25–39	16	48	77	1.43	0.805	70	44	3.03	0.179	124	26	5.61	0.025
40–54	41	112	82	1.64	0.731	214	36	2.02	0.386	314	28	5.01	0.032
55+	39	111	84	2.96	0.454	187	42	3.34	0.138	306	30	5.46	0.024
Race/ethnicity
Other	17	25	80	Referent		50	32	Referent		131	15	Referent
Non-Hispanic white	83	249	82	1.22	0.683	431	40	1.59	0.140	648	30	2.33	0.002
Education
Low	33	88	82	Referent		185	35	Referent		325	22	Referent
Moderate	36	123	80	0.89	0.747	204	39	1.19	0.407	286	32	1.76	0.002
High	30	64	87	1.59	0.312	95	46	1.59	0.076	171	31	1.50	0.071
Income
Low	42	70	75	Referent		153	29	Referent		245	21	Referent
Moderate	36	98	84	1.93	0.082	166	42	1.57	0.040	260	31	1.54	0.034
High	22	80	87	2.67	0.025	130	46	2.01	0.006	218	31	1.85	0.005
HSIa
0–1	27	51	78	Referent		100	35	Referent		226	16	Referent
2–3	47	138	80	1.22	0.616	256	37	1.09	0.729	393	28	1.67	0.015
4–6	25	102	87	2.36	0.054	167	44	1.66	0.050	226	39	2.40	0.001
Ever used any SSMb
No	43	64	81	Referent		119	39	Referent		344	13	Referent
Yes	57	221	82	0.97	0.943	382	39	1.07	0.755	452	38	3.29	<0.001

Analyses included data from waves 6℃8 and were adjusted for sex, age group, race/ethnicity, education, income, heavy smoking index (HSI) and survey wave; generalized estimating equation (GEE) modelling was used to account for repeated observations of the same respondents over time; ns indicate number of unique individuals within cells; percentages consider multiple observations per individual.

^aAssessed at wave preceding evaluation of medication use;

^bAssessed prior to evaluation of medication use by combining life-time use with annual use. OR = odds ratio.