Table 1.

Predictors of self-reported 7-day quit status at follow-up for current smokers at the time of referral and first contact (n=275).

Continuous Covariates	Bivariate results		Multivariate results (n=275)
	Total N	Mean (sd) quit at follow-up (n=65)	OR	95% CI
Age	275	57.88 (10.89)	0.99	0.96–1.03
Pack-years	275	52.23 (28.94)	1.00	0.99–1.01
Days between referral & follow-up	275	105.18 (150.56)	1.001	0.999–1.003
Number of counseling calls	275	3.60 (1.75)	1.00	0.81–1.23
Categorical Covariates	Total N	% quit at follow-up	OR	95% CI
Sex
Female	145	14.5	1.00	Ref.
Male	130	14.6	0.90	0.44–1.82
Marital Status
Single	155	11.0	1.00	Ref.
Married	120	19.2	2.05	1.01–4.18
ECOG Status
0	180	18.9	4.05	1.58–10.39
≥1	95	6.3	1.00	Ref.
Patient Type
Other thoracic center patient	165	12.7	1.00	Ref.
Lung cancer patient	110	17.3	1.85	0.86–3.98

Please note: Statistically significant results at p<0.05 are in bold and underlined.

All variables presented were included in the multivariate model. The outcome of interest is self-reported quit status at follow-up (at least 7 days smoke-free prior to the follow-up contact), with current tobacco users as the referent group. N=40 were missing data on one or more covariates (n=21 missing pack-years and n=19 were missing marital status), therefore only 275/315 who were contacted twice and currently using tobacco at each contact are included in the stratified logistic regression analysis. Other variables that were examined bivariately but were not included in the multivariate logistic regression, and therefore are not shown here include race and ethnicity. The p-value for the chi-square test between martial status and quit status at follow-up was p=0.056. There were no statistically significant associations between these covariates and self-reporting quit at follow-up among patients referred as former smokers.