Table 2.
Changes in Awareness, Use of, and Beliefs About E-Cigarettes, Minnesota Adolescent Community Cohort Study, 2010–2013
| Year | |||
|---|---|---|---|
| 2010–2011 | 2011–2012 | 2012–2013 | |
| AOR (95% CI) | AOR (95% CI) | AOR (95% CI) | |
| Heard of e-cigarettes | 1.00 | 2.88 (2.46, 3.37) | 5.57 (4.55, 6.82) |
| Ever used e-cigarettes | 1.00 | 2.26 (1.77, 2.88) | 5.12 (3.92, 6.69) |
| Past-30-day use of e-cigarettes | 1.00 | 2.12 (1.32, 3.39) | 5.41 (3.38, 8.66) |
| Agreed that e-cigarettes help people quit smoking | 1.00 | 1.28 (1.11, 1.48) | 1.58 (1.34, 1.86) |
| Agreed that e-cigarettes are less harmful than cigarettes | 1.00 | 1.35 (1.17, 1.56) | 1.45 (1.23, 1.70) |
| Agreed that e-cigarettes are less addictive than cigarettes | 1.00 | 1.18 (1.01, 1.37) | 1.08 (0.91, 1.28) |
| Adjusted mean (95% CI) | Adjusted mean (95% CI) | Adjusted mean (95% CI) | |
| Days used e-cigarettes in the past 30 days | 0.06 (0.01, 0.11) | 0.10 (0.05, 0.16) | 0.25 (0.16, 0.33) |
| Days used e-cigarettes in the past 30 days among past-30-day e-cigarette users | 4.33 (0.81, 7.86) | 4.17 (1.28, 7.06) | 5.32 (2.51, 8.12) |
Adjusted for age, gender, race/ethnicity, education, number of peers who smoke, and smoking status. Bolded estimates are statistically significant (p < .05).