Table.
Prevalence estimates for use of electronic nicotine delivery systems and electronic non-nicotine delivery systems
| n | Prevalence, % (95% CI) | Female, n | Male, n | Female prevalence, % (95% CI) | Male prevalence, % (95% CI) | |
|---|---|---|---|---|---|---|
| Ever use | ||||||
| England (UK) | 14 288 | 21·5 (20·9–22·2) | 7236 | 6842 | 23·0 (22·0–24·0) | 27·0 (25·9–28·1) |
| Estonia | 4727 | 30·0 (28·7–31·3) | 2357 | 2370 | 24·0 (22·3–25·8) | 36·0 (34·1–37·9) |
| Germany | 2735 | 14·5 (13·2–15·9) | 1321 | 1413 | 10·3 (8·8–12·1) | 18·5 (16·5–20·6) |
| Iceland | 10 593 | 27·0 (26·2–27·9) | 5200 | 5222 | 26·0 (24·8–27·2) | 26·0 (24·8–27·2) |
| Ireland | 8475 | 21·7 (20·8–22·6) | 4594 | 3881 | 18·0 (16·9–19·1) | 26·0 (24·6–27·4) |
| Japan | 64 152 | 3·0 (2·9–3·2) | 29 570 | 34 582 | 2·0 (1·8–2·1) | 4·1 (3·9–4·3) |
| Lithuania | 4191 | 38·6 (37·1–40·1) | 2058 | 2133 | 33·0 (31·0–35·1) | 44·3 (41·9–46·1) |
| Mexico | 12 081 | 7·0 (6·6–7·5) | 5920 | 6161 | 5·0 (4·5–5·6) | 8·0 (7·4–8·7) |
| New Zealand | 27 083 | 37·3 (36·7–37·8) | 13 635 | 13 002 | 33·4 (32·7–34·2) | 40·6 (39·7–41·4) |
| Scotland (UK) | 26 695 | 23·8 (23·3–24·3) | 11 449 | 11 449 | 22·0 (21·3–22·8) | 29·0 (28·2–29·8) |
| Switzerland | 3873 | 38·5 (37·0–40·0) | 1991 | 1882 | 30·9 (28·9–33·0) | 46·5 (44·3–48·8) |
| Current use | ||||||
| England (UK) | 13 191 | 6·0 (5·6–6·4) | 6704 | 6277 | 5·0 (4·5–5·6) | 7·0 (6·4–7·7) |
| Germany | 2735 | 4·1 (3·4–4·9) | 1321 | 1413 | 2·7 (2·0–3·8) | 5·0 (4·3–6·6) |
| Ireland | 8475 | 8·4 (7·8–9·0) | 4594 | 3881 | 7·0 (6·3–7·8) | 10·0 (9·1–11·0) |
| Japan | 64 152 | 0·9 (0·8–1·0) | 29 570 | 34 582 | 0·5 (0·4–0·6) | 1·0 (1·2–1·4) |
| Lithuania | 4191 | 18·1 (16·9–19·3) | 2058 | 2133 | 15·0 (13·5–16·6) | 21·0 (19·3–22·8) |
| Malaysia | 27 497 | 9·3 (8·9–9·6) | 14 362 | 13 135 | 2·5 (2·3–2·8) | 17·0 (16·0–17·3) |
| Mexico | 12 068 | 1·1 (0·9–1·3) | 5913 | 6155 | 0·6 (0·4–0·8) | 2·0 (1·7–2·4) |
| South Korea | 60 040 | 2·4 (2·3–2·6) | 29 577 | 30 463 | 1·1 (1·0–1·2) | 4·0 (3·5–4·0) |
| Switzerland | 3873 | 16·0 (14·9–17·2) | 1991 | 1882 | 12·7 (11·3–14·2) | 20·0 (17·8–21·4) |
| Taiwan | 44 289 | 2·7 (2·6–2·9) | 21 338 | 22 951 | 1·5 (1·3–1·6) | 4·0 (3·7–4·2) |
| USA | 49 039 | 22·8 (22·4–23·2) | 6464 | 6183 | 33·5 (32·4–34·7) | 32·0 (30·9–33·2) |
| Daily use | ||||||
| Finland | 153 142 | 2·1 (2·1–2·2) | 78 963 | 73 922 | 0·9 (0·9–1·0) | 3·4 (3·2–3·5) |
| Japan | 64 152 | 0·1 (0·1–0·1) | 29 570 | 34 582 | 0·1 (0·1–0·2) | 0·1 (0·1–0·1) |
| New Zealand | 26 532 | 3·1 (2·9–3·4) | 13 429 | 12 668 | 2·4 (2·1–2·7) | 3·7 (3·4–4·0) |
| USA | 31 701 | 4·3 (4·1–4·6) | 6464 | 6183 | 6·4 (5·8–7·0) | 7·9 (7·3–8·6) |
| Occasional use | ||||||
| England (UK) | 13 191 | 4·0 (3·7–4·4) | 6704 | 6277 | 4·0 (3·6–4·5) | 4·0 (3·5–4·5) |
| New Zealand | 27 354 | 12·0 (11·6–12·4) | 14 987 | 13 446 | 10·8 (10·3–11·3) | 12·8 (12·2–13·4) |
Data given for studies that disaggregated results by sex. Ever use is defined as any lifetime use. Current use is defined as use in past 30 days. Occasional use is defined as less than daily and more than every 30 days