Table 3.
History of smoking among e-cigarette users who smoked regular cigarettes when they started using e-cigarettes (n=149)a
| % (95% CI) | |
|---|---|
| How many regular cigarettes did you smoke before switching to e-cigarettes? | |
| Less than 10 cigarettes | 14 (8, 20) |
| 10–20 cigarettes | 36 (28, 44) |
| More than 20 cigarettes | 50 (42, 58) |
| How long had you smoked regular cigarettes before you started using e-cigarettes? | |
| Less than 10 years | 27 (19, 34) |
| 10–20 years | 31 (23, 39) |
| More than 20 years | 42 (34, 51) |
| How often do you use e-cigarettes compared to regular cigarettes? | |
| Less often | 37 (29, 45) |
| With the same frequency | 36 (28, 44) |
| More often | 27 (19, 34) |
| When compared to regular cigarettes, how deeply do you inhale e-cigarettes? | |
| Less deeply | 29 (21, 37) |
| The same | 52 (43, 60) |
| More deeply | 19 (12, 25) |
| When compared to regular cigarettes, do you take puffs more or less frequently from e-cigarettes? | |
| Less frequently | 35 (27, 43) |
| With the same frequency | 43 (35, 51) |
| More frequently | 22 (15, 29) |
| When compared with regular cigarettes, how much satisfaction do you get from e-cigarettes? | |
| Less | 32 (24, 40) |
| The same | 32 (24, 40) |
| More | 36 (28, 44) |
| Did you ever try to quit smoking using any nicotine replacement products such as a patch, gum or lozenge? | |
| Yes, but I found them ineffective | 56 (47, 64) |
| Yes, and I found them effective | 4 (1, 8) |
| No | 40 (32, 49) |
a
Five respondents (3% of smokers) did not answer the question about their smoking history. Answers from participants who were not smoking at the time of starting e-cigarette use are not available. CI, confidence interval.