Table 3.
Logistic regression predicting on-going VNP use among baseline daily smokers who reported ever vaping (N = 911).
| Partially adjusted model | Final adjusted model | |||
|---|---|---|---|---|
| Baseline predictors: | OR | 95% CI | OR | 95% CI |
| Intention to quit smoking (Ref: No) | ||||
| Yes | 1.32 | (0.92, 1.90) | ||
| 31–60mins | 1.07 | (0.66, 1.74) | ||
| 6 to 30mins | 1.24 | (0.81, 1.90) | ||
| 5 min or less | 1.20 | (0.72, 2.00) | ||
| Cigarette per day (Ref: 0 – 10) | ||||
| 11–20 cigarettes | 1.16 | (0.86, 1.58) | ||
| 21 – 30 cigarettes | 1.11 | (0.72, 1.70) | ||
| More than 31 cigarettes | 1.08 | (0.56, 2.08) | ||
| Past year alcohol use (Ref: No alcohol use) | ||||
| Daily | 1.24 | (0.36, 4.28) | ||
| Weekly | 1.12 | (0.48, 2.60) | ||
| Monthly or less frequent | 1.14 | (0.57, 2.28) | ||
| Quitting self-efficacy | 1.01 | (0.90, 1.14) | ||
| Enjoy life less after quitting | 1.00 | (0.86, 1.17) | ||
| Worry about adverse health effect in future | 1.13 | (0.97, 1.31) | ||
| Depressive symptom - little interest or pleasures | 0.94 | (0.69, 1.29) | ||
| Depressive symptom - feeling down or hopeless | 1.25 | (0.91, 1.71) | ||
| Overall opinion about smoking | 0.94 | (0.80, 1.10) | ||
| Current health | 1.07 | (0.92, 1.25) | ||
| Past adverse health effect of smoking | 0.95 | (0.79, 1.14) | ||
| Vaping frequency (Ref: Less than monthly) | ||||
| Daily | 11.93*** | (6.12, 23.25) | 11.98*** | (6.00, 23.93) |
| Weekly | 9.35*** | (4.95, 17.64) | 9.80*** | (5.16, 18.6) |
| Monthly | 4.13*** | (2.60, 6.54) | 4.32*** | (2.71, 6.87) |
| Smoking status at follow-up wave (Ref: Daily smoker) | ||||
| Non-daily smoker | 5.51*** | (2.28, 10.94) | 4.99*** | (2.39, 10.43) |
| Quitter | 0.62* | (0.39, 0.97) | 0.48** | (0.29, 0.80) |
Note: Demographic and survey specific variables were adjusted for in all models;
***
p < .001;
**
p < .01;
*
p <.05.