E-cigarette use and smoking reduction or cessation in the 2010/2011 TUS-CPS longitudinal cohort

BMC Public Health

Table 3 Logistic regression for 30+ day cessation at follow-up, among those who made a quit attempt; TUS-CPS 2010–11

Variable	Percent attaining outcome	Adjusted odds ratio	95 % CI
E-cigarette ever use status
Never used	34.9	Reference
Ever used to quit	17.3	0.4	0.2–0.8**
Ever used other than to quit	30.4	0.7	0.4–1.5
Pharmaceutical aid used for last quit attempt
No	34.7	Reference
Yes	29.5	0.7	0.5–0.9**
Age
18–24	40.6	Reference
25–34	38.8	1.5	0.9–2.6
35–49	30.2	0.7	0.4–1.2
50+	29.3	0.8	0.5–1.4
Sex
Female	33.9	Reference
Male	32.4	1.1	0.8–1.4
Race/Ethnicity
Non-Hispanic White	32.6	Reference
Other	35.0	1.0	0.7–1.3
Education
Less than high school	20.9	Reference
High school	32.1	2.2	1.4–3.4***
Some college	40.5	4.0	2.6–6.1***
College gradate	34.4	3.2	1.9–5.5***
Cigarettes smoked per day
< 15	36.2	Reference
15+	28.9	1.0	0.7–1.2
Time to 1st cigarette < 30 min from waking
No	34.2	Reference
Yes	31.5	0.9	0.7–1.2
Smoking initiated before age 16 years
No	32.3	Reference
Yes	37.4	1.2	0.8–1.7

**p < 0.01, ***p < 0.001 All data is weighted to be representative of the U.S. population

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