Table 3.
Level of T1 e-cigarette use |
Per cent (onset) |
OR | CI | p Value |
---|---|---|---|---|
Never | 5 | 1.00 | ||
1–2 times | 14 | 2.88 | 1.96 to 4.22 | <0.0001 |
3–4 times | 11 | 2.29 | 1.35 to 3.87 | 0.002 |
Yearly/monthly | 19 | 4.17 | 2.03 to 8.57 | 0.0001 |
Weekly/daily | 19 | 4.09 | 2.43 to 6.88 | <0.0001 |
Analysis conducted for T1 never-smokers, analytic N=1070. Criterion variable is never smoked versus ever smoked at T2. Cells for the highest levels of use are collapsed to avoid small cell sizes. Results are adjusted for demographics, parenting and personality variables, and for clustering within school.