Table 2.

Multivariate logistic regression models with outcome a quit attempt of 1 day or longer in the past year, among current smokers (TUS-CPS 2010–2011, N=24,537)

	Adjusted odds ratio (95% CI)
Tobacco use status
Exclusive smokers (reference)	1
Dual users	0.96 (0.66–1.39)
Cigarette consumption within tobacco use status^b
Exclusive smokers and < 12 cigarettes per month (reference)	1
Exclusive smokers and 0 to 10 cpd	0.92 (0.85–1.00)
Exclusive smokers and 11 to 20 cpd	0.54 (0.49–0.59)^***
Exclusive smokers and ≥ 21 cpd	0.36 (0.32–0.49)^***
Dual users and < 12 cigarettes per month (reference)	1
Dual users and 0 to 10 cpd	0.96 (0.62–1.49)
Dual users and 11 to 20 cpd	0.85 (0.52–1.38)
Dual users and ≥ 21 cpd	0.65 (0.36–1.18)
Time to first cigarette within tobacco use status^c
Exclusive smokers and time to first cigarette ≥30 minutes after waking	1
Exclusive smokes and time to first cigarette < 30 minutes after waking	0.76 (0.73–0.80)^***
Dual users and time to first cigarette ≥30 minutes after waking	1
Dual users and time to first cigarette < 30 minutes after waking	0.89 (0.64–1.25)
Age
18–24 years (reference)	1
25–34 years	0.93 (0.86–1.01)
35–49 years	0.83 (0.77–0.91)^***
50–64 years	0.78 (0.72–0.85)^***
≥ 65 years	0.62 (0.56–0.67)^***
Sex
Female (reference)	1
Male	1.01 (0.96–1.05)
Race/ethnicity
White (reference)	1
Hispanic	0.87 (0.79–0.95)^**
African American	1.11 (1.03–1.21)^**
Asian/PI	0.87 (0.75–1.01)
Mixed/Other	1.14 (0.99–1.28)
Education
< High school (reference)	1
High school	1.09 (1.02–1.16)^*
Some college	1.26 (1.17–1.35)^***
College graduate	1.10 (1.02–1.19)^*
Age of smoking initiation
Age of smoking initiation > 15 years (reference)
Age of smoking initiation ≤ 15 years	1.01 (0.96–1.06)

p < 0.05

^**

p< 0.005

^***

p<0.001

p-value for interaction term between tobacco use status and consumption < 0.001

p-value for interaction term between tobacco use status and smoking within 30 minutes of waking < 0.01