Table 3.
Correlates of Knowledge About E-Cigarette Constituents Among U.S. Young Adults Using Multinomial Logistic Regression Analysis (Reference Category is Correct Knowledge) (n = 1,247)
| Contains nicotine | Contains toxic chemicals | |||||||
|---|---|---|---|---|---|---|---|---|
| Don’t know | Incorrect | Don’t know | Incorrect | |||||
| RRR | 95% CI | RRR | 95% CI | RRR | 95% CI | RRR | 95% CI | |
| E-cigarette use (reference never use) | ||||||||
| Ever user, not in past 30 days | 0.44*** | 0.29, 0.67 | 1.09 | 0.54, 2.20 | 0.77 | 0.51, 1.18 | 1.33 | 0.82, 2.15 |
| Current user (past 30 days) | 0.25*** | 0.13, 0.48 | 0.84 | 0.33, 2.14 | 0.76 | 0.42, 1.36 | 1.61 | 0.86, 3.01 |
| Smoking (reference nonsmoker) | ||||||||
| Former smoker | 0.80 | 0.51, 1.27 | 1.25 | 0.56, 2.79 | 0.96 | 0.60, 1.54 | 1.41 | 0.81, 2.44 |
| Non-daily smoker | 0.72 | 0.44, 1.18 | 0.87 | 0.38, 1.97 | 1.09 | 0.67, 1.78 | 1.18 | 0.67, 2.07 |
| Daily smoker | 1.16 | 0.70, 1.91 | 0.45 | 0.14, 1.44 | 1.78* | 1.01, 3.14 | 1.34 | 0.68, 2.65 |
| Exposure to e-cigarette marketing | 0.81*** | 0.76, 0.87 | 1.12* | 1.01, 1.25 | 0.85*** | 0.79, 0.91 | 1.05 | 0.98, 1.13 |
| Female | 1.04 | 0.81, 1.34 | 1.29 | 0.77, 2.15 | 0.87 | 0.67, 1.13 | 0.66* | 0.47, 0.91 |
| Race (reference White non-Hispanic) | ||||||||
| Black non-Hispanic | 2.97*** | 2.11, 4.17 | 3.26*** | 1.62, 6.56 | 2.48*** | 1.67, 3.71 | 2.92*** | 1.82, 4.68 |
| Other non-Hispanic | 1.75** | 1.24, 2.47 | 2.36* | 1.21, 4.58 | 0.97 | 0.68, 1.40 | 1.18 | 0.76, 1.83 |
| Hispanic | 1.92* | 1.16, 3.20 | 3.42** | 1.39, 8.41 | 1.19 | 0.70, 2.02 | 1.45 | 0.76, 2.75 |
| Education (less than high school) | ||||||||
| High school | 0.74 | 0.45, 1.22 | 1.02 | 0.45, 2.31 | 0.95 | 0.55, 1.65 | 1.03 | 0.54, 1.94 |
| Some college | 0.67 | 0.41, 1.09 | 0.48 | 0.20, 1.12 | 0.90 | 0.53, 1.54 | 0.80 | 0.43, 1.49 |
| Bachelor’s degree or higher | 0.44** | 0.26, 0.74 | 0.24** | 0.09, 0.67 | 0.56* | 0.32, 1.00 | 0.69 | 0.35, 1.35 |
| Income (reference <$10,000) | ||||||||
| $10,000–$24,999 | 1.02 | 0.66, 1.57 | 0.96 | 0.42, 2.24 | 1.40 | 0.85, 2.30 | 1.15 | 0.63, 2.07 |
| $25,000–$49,999 | 0.75 | 0.48, 1.16 | 0.75 | 0.31, 1.82 | 0.77 | 0.48, 1.22 | 0.77 | 0.44, 1.36 |
| $50,000–$74,999 | 0.67 | 0.43, 1.03 | 1.12 | 0.46, 2.69 | 0.85 | 0.54, 1.35 | 0.69 | 0.39, 1.23 |
| >$75,000 | 0.91 | 0.62, 1.34 | 1.40 | 0.64, 3.10 | 0.90 | 0.59, 1.36 | 0.99 | 0.59, 1.65 |
| Age | 1.03* | 1.00, 1.06 | 0.98 | 0.92, 1.04 | 1.05** | 1.01, 1.08 | 1.00 | 0.96, 1.04 |
| Constant | 0.67 | 0.28, 1.59 | 0.12* | 0.02, 0.66 | 0.72 | 0.28, 1.82 | 0.60 | 0.19, 1.84 |
CI = confidence interval; RRR = relative risk ratio.
*p < .05; **p < .01;***p < .001.