eTable 5. Use of nicotine liquids among all e-cigarette users and in selected groups.
| Variable | Characteristics |
Total (n) |
Only with nicotine |
Mainly with nicotine |
Mainly without nicotine |
Only without nicotine |
No response |
| Total (%) | 473 | 143 (30.2) | 121 (25.6) | 83 (17.5) | 72 (15.2) | 54 (11.4) | |
| Smoker status (%) | Smoker | 320 | 117 (36.6) | 96 (30.0) | 45 (14.1) | 37 (11.6) | 25 (7.8) |
| Quit smoking in 2010 or later |
52 | 13 (25.0) | 16 (30.8) | 6 (11.5) | 7 (13.5) | 10 (19.2) | |
| Quit smoking before 2010 |
14 | 5 (35.7) | 2 (14.3) | 2 (14.3) | 1 (7.1) | 4 (28.6) | |
| Have tried smoking | 53 | 8 (15.1) | 7 (13.2) | 15 (28.3) | 11 (20.7) | 12 (22.6) | |
| Never smoker | 32 | 1 (3.1) | 0 | 15 (46.9) | 13 (40.6) | 3 (9.4) | |
| Age group (%) | 14–19 years | 68 | 6 (8.8) | 14 (20.6) | 21 (30.9) | 24 (35.3) | 3 (0.4) |
| 20–39 years | 239 | 77 (32.2) | 66 (27.6) | 44 (18.4) | 24 (10.0) | 28 (11.7) | |
| 40–59 years | 128 | 48 (37.5) | 37 (28.9) | 11 (8.6) | 20 (15.6) | 12 (9.4) | |
| ≥ 60 years | 37 | 11 (29.7) | 4 (10.8) | 7 (18.9) | 4 (10.8) | 11 (29.7) | |
| Use(%) | Have tried it | 329 | 101 (30.7) | 70 (21.3) | 59 (17.9) | 49 (14.9) | 50 (15.2) |
| Former user | 88 | 22 (25.0) | 31 (35.2) | 17 (19.3) | 15 (17.0) | 3 (0.3) | |
| Current user | 55 | 19 (34.5) | 20 (36.4) | 8 (14.5) | 8 (14.5) | 0 |
As a result of weighting, summation of absolute frequencies may contain round-off errors, in the range of 1 to 2 persons.