Odds ratios calculated using multivariable logistic regression* for the association between e-cigarette use and sociodemographic factors, by risk factor
| Risk factor | OR (95% CI) | p |
|---|---|---|
| Male | 1.7 (1.2–2.3) | 0.002 |
| Respondent knew that smoking can cause lung cancer | 0.2 (0.02–1) | 0.05 |
| Respondent had family members who smoke tobacco | 1.7 (1.2–2.4) | 0.003 |
| Respondent had friends who smoke tobacco | 3.6 (2.6–4.9) | < 0.001 |
| Respondent currently smoked tobacco | 12.1 (6.6–22.4) | < 0.001 |
| Smoking allowed inside respondent’s home | 1.8 (1.2–2.7) | 0.007 |
| Respondent reported excellent or good stress level | 0.6 (0.4–0.9) | 0.003 |
Note: CI = confidence interval, e-cigarette = electronic cigarette, OR = odds ratio. OR > 1 suggests a positive association between e-cigarette use and risk factor.
↵* With multiple imputation of missing data.