Table 5.
Characteristics of “full responder” smokers according to e-cigarette use.
| Characteristic | E-Cigarette Use | p * | |||
|---|---|---|---|---|---|
| Current Tobacco Smokers n = 585 | Never Users 1 n = 102 | Former Users 1 n = 430 | Current Users 1 n = 53 | ||
| n (%) | n (%) | n (%) | n (%) | ||
| Gender | 0.2504 | ||||
| Men | 136 (23.3) | 21 (20.6) | 98 (22.8) | 17 (32.1) | |
| Women | 449 (76.7) | 81 (79.4) | 332 (77.2) | 36 (67.9) | |
| Age in categories (years) | 0.2588 | ||||
| 18–20 | 271 (46.3) | 48 (47.1) | 205 (47.7) | 18 (34.0) | |
| 21–24 | 270 (46.2) | 44 (43.1) | 197 (45.8) | 29 (54.7) | |
| 25 and over | 44 (7.52) | 10 (9.8) | 28 (6.5) | 6 (11.3) | |
| CDS-5 2 score, median (IQR) 3 | 9.0 (9.0, 11.0) | 9.0 (9.0, 10.0) | 9.0 (8.0, 11.0) | 10.0 (8.0, 11.0) | 0.0848 † |
| Currently trying to stop tobacco-smoking | 0.0003 | ||||
| No | 457 (78.1) | 80 (78.4) | 347 (80.7) | 30 (56.6) | |
| Yes | 128 (21.9) | 22 (21.6) | 83 (19.3) | 23 (43.4) | |
| Number of previous attempts to quit tobacco 4 | 0.0429 | ||||
| Never | 254 (44.4) | 56 (56.6) | 181 (43.1) | 17 (32.1) | |
| 1 attempt | 113 (19.8) | 17 (17.2) | 84 (20.0) | 12 (22.6) | |
| 2 or 3 attempts | 157 (27.4) | 23 (23.2) | 118 (28.1) | 16 (30.2) | |
| 4 attempts or more | 48 (8.4) | 3 (3.0) | 37 (8.8) | 8 (15.1) | |
| Desire to stop smoking 4 | 0.0028 | ||||
| Not at all | 131 (22.9) | 31 (31.3) | 92 (21.9) | 8 (15.1) | |
| Very little | 178 (31.1) | 20 (20.2) | 143 (34.1) | 15 (28.3) | |
| Medium | 193 (33.7) | 37 (37.4) | 140 (33.3) | 16 (30.2) | |
| Strong | 70 (12.3) | 11 (11.1) | 45 (10.7) | 14 (26.4) | |
Full responders: current smokers who filled in supplementary items about nicotine dependence, number of attempts to quit tobacco and desire to stop smoking. * Chi2-test, except: †: Kruskal-Wallis test. Abbreviations: 1 Electronic cigarette use: never e-cigarette users were those who had never tried one. 2 CDS-5: 5-item Cigarette Dependence Scale; 3 IQR: interquartile range. 4 Missing data: n = 13. Current users comprised those regularly using e-cigarettes at time of survey, daily, or occasionally (less than once a day). Former users were those who were not current smokers among experimenters, as opposed to current users.