Bivariate | Adjusted/multivariable | ||||||||
---|---|---|---|---|---|---|---|---|---|
Use should be allowed (%) | OR | 95% LCI | 95% UCI | p Value | OR | 95% LCI | 95% UCI | p Value | |
Wave | |||||||||
2013 (referent) | 55.2 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
2014 | 45.0 | 0.69 | 0.62 | 0.76 | <0.001 | 0.48 | 0.28 | 0.81 | 0.007 |
Smoking status | |||||||||
Ex-smoker (referent) | 38.7 | 1 | ref | ref | ref | 1 | ref | ref | ref |
Current smoker | 53.5 | 1.73 | 1.44 | 2.07 | <0.001 | 1.72 | 1.40 | 2.10 | <0.001 |
E-cigarette | <0.001 | <0.001 | |||||||
Never tried (referent) | 35.0 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
Tried, not using | 52.4 | 1.88 | 1.57 | 2.24 | <0.001 | 1.89 | 1.57 | 2.29 | <0.001 |
Non-daily use | 65.0 | 2.90 | 2.40 | 3.51 | <0.001 | 2.60 | 2.13 | 3.17 | <0.001 |
Daily use | 73.5 | 4.50 | 3.52 | 5.76 | <0.001 | 4.29 | 3.29 | 5.60 | <0.001 |
Risks of smoking from nicotine | <0.001 | <0.001 | |||||||
Nearly all (referent) | 47.9 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
Much more than half | 47.4 | 0.98 | 0.78 | 1.24 | 0.87 | 1.02 | 0.79 | 1.31 | 0.89 |
Around half | 46.3 | 0.88 | 0.69 | 1.11 | 0.28 | 0.87 | 0.67 | 1.12 | 0.28 |
Some but well under half | 52.2 | 1.06 | 0.83 | 1.35 | 0.64 | 0.99 | 0.76 | 1.29 | 0.93 |
None/very small | 70.1 | 1.95 | 1.46 | 2.62 | <0.001 | 1.74 | 1.27 | 2.39 | <0.001 |
Don’t know | 45.2 | 0.91 | 0.68 | 1.22 | 0.55 | 1.08 | 0.78 | 1.48 | 0.65 |
Relative harm of e-cigarettes | |||||||||
Not less harmful | 34.1 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
Less harmful | 60.8 | 2.46 | 2.13 | 2.83 | <0.001 | 2.00 | 1.71 | 2.33 | <0.001 |
Gender | |||||||||
Male (referent) | 50.2 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
Female | 51.5 | 1.05 | 0.89 | 1.23 | 0.58 | 0.93 | 0.77 | 1.14 | 0.49 |
Age (years) | 0.13 | 0.037 | |||||||
18–24 (referent) | 51.6 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
25–39 | 47.4 | 0.83 | 0.60 | 1.15 | 0.26 | 0.80 | 0.54 | 1.19 | 0.27 |
40–54 | 51.1 | 0.96 | 0.70 | 1.31 | 0.78 | 0.97 | 0.66 | 1.41 | 0.86 |
55 and over | 52.4 | 1.04 | 0.73 | 1.38 | 0.98 | 1.00 | 0.68 | 1.45 | 0.98 |
Annual income | 0.038 | 0.073 | |||||||
Up to £15 000 (referent) | 53.8 | 1.00 | ref | ref | ref | 1.00 | ref | ref | ref |
£15 001–£30 000 | 52.9 | 0.95 | 0.76 | 1.18 | 0.63 | 0.89 | 0.69 | 1.16 | 0.39 |
Over £30 000 | 48.1 | 0.78 | 0.63 | 0.97 | 0.025 | 0.70 | 0.54 | 0.91 | 0.007 |
Don’t know/prefer not to say | 46.2 | 0.73 | 0.54 | 0.98 | 0.035 | 0.75 | 0.53 | 1.06 | 0.10 |
Models include 3279 observations from 1848 individuals.Bold font indicates significant associations (p<0.05).
LCI, Lower CI; UCI, Upper CI.