Prevalence (95% CI) of ever having used e-cigarettes, overall and by smoking status, among participants in Taiwan Adult Smoking Behavior Survey, 2015
| Entire population (n=26 021) | Current smokers (n=2573) | Former smokers (n=2817) | Never smokers (n=20 621) | |||||
|---|---|---|---|---|---|---|---|---|
| Prevalence (95% CI) | Prevalence (95% CI) | Prevalence (95% CI) | Prevalence (95% CI) | |||||
| Ever having used e-cigarettes | 2.7 | (2.40 to 2.99) | 14.2 | (12.38 to 16.02) | 3.2 | (2.23 to 4.19) | 0.8 | (0.59 to 0.92) |
| Age (years) | ||||||||
| 15–17 | 2.2 | (1.15 to 3.19) | 52.4 | (21.99 to 82.87) | 22.4 | (0.00 to 64.28) | 1.5 | (0.67 to 2.32) |
| 18–24 | 6.5 | (5.16 to 7.91) | 49.3 | (38.52 to 60.11) | 39.1 | (17.20 to 61.03) | 2.9 | (1.99 to 3.91) |
| 25–44 | 3.8 | (3.12 to 4.39) | 16.8 | (13.64 to 19.92) | 7.3 | (3.90 to 10.74) | 0.6 | (0.39 to 0.88) |
| 45–64 | 1.5 | (1.20 to 1.82) | 8.1 | (6.23 to 10.01) | 1.6 | (0.81 to 2.36) | 0.1 | (0.06 to 0.24) |
| ≥65 | 0.4 | (0.21 to 0.58) | 3.1 | (1.16 to 4.95) | 0.6 | (0.15 to 1.06) | 0.1 | (0.00 to 0.16) |
| Missing | 0.2 | (0.00 to 0.49) | 2.6 | (0.00 to 7.75) | 0.8 | (0.00 to 2.30) | n/a | |
| Sex | ||||||||
| Female | 0.9 | (0.66 to 1.09) | 15.3 | (10.05 to 20.58) | 7.7 | (2.78 to 12.67) | 0.4 | (0.24 to 0.52) |
| Male | 4.6 | (4.03 to 5.13) | 14.1 | (12.14 to 16.01) | 2.8 | (1.83 to 3.76) | 1.4 | (1.01 to 1.78) |
| Residing in municipal area | ||||||||
| No | 2.4 | (2.09 to 2.80) | 12.3 | (10.17 to 14.35) | 3.1 | (1.88 to 4.27) | 0.6 | (0.42 to 0.81) |
| Yes | 3.0 | (2.54 to 3.54) | 17.3 | (14.00 to 20.62) | 3.4 | (1.75 to 5.07) | 0.9 | (0.64 to 1.24) |
| Married | ||||||||
| No | 4.0 | (3.44 to 4.60) | 19.1 | (15.79 to 22.49) | 8.3 | (4.94 to 11.64) | 1.4 | (1.05 to 1.76) |
| Yes | 1.7 | (1.46 to 2.03) | 10.6 | (8.68-12.58) | 1.6 | (0.92 to 2.28) | 0.2 | (0.14 to 0.34) |
| Missing | 1.0 | (0.00 to 2.40) | 21.8 | (0.00 to 49.30) | n/a | n/a | ||
| Education level | ||||||||
| Middle school or below | 1.2 | (0.76 to 1.65) | 6.6 | (3.94 to 9.25) | 0.6 | (0.00 to 1.33) | 0.2 | (0.02 to 0.34) |
| High school | 3.7 | (3.04 to 4.26) | 16.9 | (13.84 to 19.95) | 3.7 | (1.90 to 5.49) | 0.6 | (0.33 to 0.80) |
| College or above | 3.0 | (2.52 to 3.44) | 19.4 | (15.72 to 23.08) | 5.7 | (3.37 to 7.96) | 1.2 | (0.87 to 1.52) |
| Missing | n/a | n/a | n/a | n/a | ||||
| Employed | ||||||||
| No | 1.6 | (1.26 to 1.91) | 10.8 | (7.92 to 13.68) | 2.5 | (1.16 to 3.79) | 0.7 | (0.43 to 0.91) |
| Yes | 3.6 | (3.12 to 4.04) | 15.4 | (13.15 to 17.62) | 3.7 | (2.34 to 5.12) | 0.8 | (0.60 to 1.07) |
| Monthly household income (NTD) | ||||||||
| ≤20 000 | 0.8 | (0.39 to 1.19) | 5.4 | (2.48 to 8.37) | 0.8 | (0.00 to 2.00) | 0.1 | (0.00 to 0.19) |
| 20 001–60 000 | 2.3 | (1.79 to 2.73) | 10.9 | (8.22 to 13.55) | 2.6 | (1.20 to 4.00) | 0.6 | (0.31 to 0.82) |
| 60 001–100 000 | 3.6 | (2.87 to 4.32) | 18.8 | (14.44 to 23.10) | 4.1 | (1.67 to 6.57) | 1.2 | (0.71 to 1.73) |
| ≥100 001 | 4.5 | (3.50 to 5.57) | 23.3 | (17.49 to 29.07) | 2.1 | (0.54 to 3.73) | 1.3 | (0.75 to 1.88) |
| Unknown | 2.4 | (1.76 to 3.05) | 14.0 | (9.23 to 18.82) | 6.8 | (2.87 to 10.73) | 0.6 | (0.32 to 0.95) |