Estimated effects of regular vaping on smoking cessation/relapse
| Unadjusted association between wave 8 regular vaping and smoking cessation/relapse | Controlled direct effect of wave 8 regular vaping on smoking cessation/relapse | |
| OR (95% CI) | OR (95% CI) | |
| Smoking cessation | ||
| (Reference: Not regular vaper) | ||
| Regular vaper | 1.28 (1.03–1.59) | 1.13 (0.82–1.55) |
| Smoking relapse | ||
| (Reference: Not regular vaper) | ||
| Regular vaper | 2.75 (2.02–3.73) | 2.97 (2.10–4.22) |
Regular vaping is defined as vaping at least weekly. The unadjusted association uses UK Household Longitudinal Study (UKHLS) wave 8 sampling weights to account for survey design and non-response but does not adjust for any confounders. The controlled direct effect uses inverse probability weighted marginal structural modelling to additionally adjust for exposure-outcome confounders and mediator-outcome confounders.