Table 4 Sensitivity analysis: logistic regression for any 30+ day cessation during the past year, reported at follow-up, among those who made a quit attempt; TUS-CPS 2010–11
From: E-cigarette use and smoking reduction or cessation in the 2010/2011 TUS-CPS longitudinal cohort
Variable | Percent attaining outcome | Adjusted odds ratio | 95 % CI |
|---|---|---|---|
E-cigarette ever use status | |||
Never used | 21.6 | Reference | |
Used to quit | 11.1 | 0.3 | 0.2–0.5*** |
Used other than to quit | 17.8 | 0.7 | 0.4–1.3 |
Pharmaceutical aid used for last quit attempt | |||
No | 22.4 | Reference | |
Yes | 16.0 | 0.8 | 0.6–1.1 |
Age | |||
18–24 | 22.6 | Reference | |
25–34 | 31.3 | 0.9 | 0.5–1.4 |
35–49 | 16.1 | 0.6 | 0.4–1.1 |
50+ | 17.5 | 0.6 | 0.4–1.0 |
Sex | |||
Female | 20.0 | Reference | |
Male | 21.1 | 1.0 | 0.8–1.2 |
Race/Ethnicity | |||
Non-Hispanic White | 20.9 | Reference | |
Other | 19.2 | 1.2 | 0.9–1.6 |
Education | |||
Less than high school | 9.1 | Reference | |
High school | 17.6 | 2.0 | 1.4–2.7*** |
Some college | 28.6 | 2.7 | 1.9–3.8*** |
College gradate | 24.5 | 2.2 | 1.4–3.5*** |
Cigarettes smoked per day | |||
< 15 | 22.5 | Reference | |
15+ | 17.8 | 0.8 | 0.6–1.0* |
Time to 1st cigarette < 30 min from waking | |||
No | 22.2 | Reference | |
Yes | 17.4 | 1.1 | 0.8–1.4 |
Smoking initiated before age 16 years | |||
No | 20.4 | Reference | |
Yes | 21.3 | 1.4 | 1.1–1.8* |