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Table 1 Smoking and e-cigarette use in the total sample
| Characteristic | N (unweighted) | % (95%CI) (weighted) |
|---|---|---|
| Smoking | ||
| Current smokers | 1281 | 32.6% (31.2–34.0%) |
| Former smokers | 1287 | 29.7% (28.3–31.1%) |
| Never smokers | 1490 | 37.7% (36.2–39.2%) |
| Smoking frequency1 | ||
| Daily smokers | 2136 | 81.6% (80.1–83.1%) |
| Occasional smokers | 432 | 18.4% (16.9–19.9%) |
| E-cigarette awareness | ||
| Yes | 3642 | 91.7% (90.9–92.5%) |
| No | 407 | 8.1% (7.3–8.9%) |
| E-cigarette use | ||
| Ever use | 924 | 27.2% (25.8–28.6%) |
| Current use | 169 | 5.0% (4.3–5.7%) |
| Past use | 374 | 9.8% (8.9–10.7%) |
| Past experimentation | 381 | 12.4% (11.4–13.4%) |
| Never use2 | 3124 | 72.7% (71.3–74.1%) |
| Frequency of e-cigarette use3 | ||
| Daily use | 435 | 79.5% (76.6–82.7%) |
| Occasional use | 106 | 20.2% (17.0–23.4%) |
| Nicotine-containing e-cigarette use4 | 720 | 77.9% (75.5–80.3%) |
