Prevalence of main motivation for using e-cigarettes among current e-cigarette users according to sociodemographics, smoking habits and patterns of using e-cigarettes in Barcelona, Spain (2015)
| n | Quit smoking tobacco (n=235) | Reduce smoking tobacco (n=288) | Use in places where tobacco is prohibited (n=61) | |||||||
| % | P value | OR (95% CI) | % | P value | OR (95% CI) | % | P value | OR (95% CI) | ||
| Overall | 584 | 39.2 | – | – | 48.0 | – | – | 10.2 | – | – |
| Sex | 0.153* | 0.984* | 0.041* | |||||||
| Male | 214 | 42.9 | 1.19 (0.84 to 1.68) | 47.9 | 1 | 6.8 | 1 | |||
| Female | 370 | 37.0 | 1 | 48.0 | 1 (0.72 to 1.4) | 12.1 | 1.87 (1.02 to 3.43) | |||
| Age (years) | <0.001† | 0.005† | <0.001* | |||||||
| <25 | 139 | 17.9 | 1 | 60.0 | 4.53 (0.88 to 23.28) | 21.4 | 4.36 (1.99 to 9.57) | |||
| 25–44 | 291 | 43.8 | 3.59 (2.2 to 5.85) | 46.2 | 2.59 (0.51 to 13.04) | 7.4 | 1.27 (0.57 to 2.83) | |||
| 45–64 | 146 | 47.7 | 4.12 (2.45 to 7.18) | 41.8 | 2.16 (0.42 to 11.06) | 5.9 | 1 | |||
| ≥65 | 8 | 75.0 | 13.8 (2.62 to 72.41) | 25.0 | 1 | 0.0 | Added to previous | |||
| Education level | 0.016* | 0.043* | 0.184* | |||||||
| Primary or less | 53 | 38.2 | 1.22 (0.66 to 2.26) | 41.8 | 1 | 16.4 | 1.73 (0.76 to 3.96) | |||
| Secondary | 284 | 33.7 | 1 | 53.3 | 1.59 (0.88 to 2.87) | 10.7 | 1 | |||
| University or more | 247 | 45.7 | 1.44 (1.01 to 2.06) | 43.3 | 1.16 (0.64 to 2.12) | 8.3 | 1.04 (0.56 to 1.92) | |||
| Time smoking e-cigarette | <0.001* | <0.001* | <0.001* | |||||||
| <6 months | 221 | 19.0 | 1 | 65.2 | 5.45 (1.40 to 21.18) | 15.8 | 3.31 (1.52 to 7.23) | |||
| 6–12 months | 139 | 42.4 | 2.76 (1.71 to 4.46) | 42.4 | 2.28 (0.58 to 8.96) | 11.8 | 2.97 (1.28 to 6.93) | |||
| 1–2 years | 212 | 55.2 | 4.46 (2.88 to 6.90) | 35.9 | 1.76 (0.45 to 6.77) | 4.0 | 1 | |||
| ≥2 years | 12 | 75.0 | 10.22 (2.57 to 40.62) | 25.0 | 1 | 0.0 | Added to previous | |||
| E-cigarette contains nicotine | 0.015* | 0.054* | <0.001* | |||||||
| Yes | 332 | 43.5 | 1.30 (0.92 to 1.84) | 51.5 | 1.54 (1.10 to 2.16) | 3.9 | 1 | |||
| No | 252 | 33.7 | 1 | 43.6 | 1 | 18.2 | 4.58 (2.39 to 8.76) | |||
| Main flavour | 0.001* | <0.005* | <0.001* | |||||||
| Tobacco | 290 | 42.2 | 1.58 (0.98 to 2.56) | 53.7 | 2.52 (1.49 to 4.27) | 2.7 | 1 | |||
| Fruit | 113 | 28.2 | 1 | 45.3 | 1.59 (0.87 to 2.90) | 23.1 | 8.72 (3.76 to 20.26) | |||
| Menthol | 102 | 31.8 | 1.10 (0.61 to 1.97) | 47.7 | 1.84 (1.00 to 3.38) | 15.9 | 5.92 (2.44 to 14.34) | |||
| Others | 79 | 53.7 | 2.54 (1.39 to 4.67) | 31.7 | 1 | 11.0 | 4.47 (1.65 to 12.09) | |||
| Smoking status (current) | <0.001* | <0.001* | <0.001* | |||||||
| Smoker | 388 | 32.5 | 1 | 63.7 | 8.00 (5.30 to 12.09) | 3.1 | 1 | |||
| Non-smoker | 196 | 51.7 | 2.33 (1.63 to 3.33) | 18.7 | 1 | 23.4 | 10.60 (5.40 to 20.82) | |||
| Number of cigarettes smoked currently | 0.103* | 0.049* | 0.187† | |||||||
| <10 | 226 | 33.6 | 1.35 (0.85 to 2.14) | 63.3 | 2.08 (0.83 to 5.19) | 3.1 | 1.53 (0.39 to 6.02) | |||
| 10–19 | 140 | 28.0 | 1 | 67.8 | 2.63 (1.03 to 6.72) | 2.1 | 1 | |||
| ≥20 | 22 | 50.0 | 2.21 (0.87 to 5.61) | 40.9 | 1 | 9.1 | 4.23 (0.65 to 27.66) | |||
| Smoking status (before) | 0.001* | <0.001* | <0.001* | |||||||
| Smoker | 515 | 41.8 | 2.16 (1.21 to 3.86) | 53.9 | 16.40 (7.25 to 37.11) | 3.1 | 1 | |||
| Non-smoker | 69 | 21.5 | 1 | 8.9 | 1 | 57.0 | 36.15 (18.36 to 71.18) | |||
| Number of cigarettes smoked before | <0.001* | <0.001* | 0.772* | |||||||
| <10 | 77 | 34.6 | 1.19 (0.69 to 2.01) | 60.3 | 1.84 (1.04 to 3.24) | 3.8 | 1.93 (0.40 to 9.25) | |||
| 10–19 | 269 | 34.2 | 1 | 61.4 | 2.28 (1.53 to 3.40) | 3.3 | 1.50 (0.45 to 4.99) | |||
| ≥20 | 169 | 57.3 | 2.39 (1.60 to 3.57) | 39.2 | 1 | 2.3 | 1 | |||
OR (adjusted for sex, age and education level).
*χ2 test.
†Fisher’s exact test.