Table 2

Association between respondent characteristics and support for availability of e-cigarettes relative to regular cigarettes

		Bivariate				Adjusted/Multivariable
	Should be equally or more available (%)	OR	95% LCI	95% UCI	p Value	OR	95% LCI	95% UCI	p Value
Wave
2013 (referent)	78.8	1.00	ref	ref	ref	1.00	ref	ref	ref
2014	75.9	0.85	0.74	0.98	0.024	1.07	0.50	2.27	0.86
Smoking status
Ex-smoker (referent)	76.9	1.00	ref	ref	ref	1.00	ref	ref	ref
Current smoker	77.7	1.02	0.82	1.27	0.85	1.10	0.87	1.41	0.43
E-cigarette					<0.001				<0.001
Never tried (referent)	70.5	1.00	ref	ref	ref	1.00	ref	ref	ref
Tried, not using	75.9	1.28	1.04	1.58	0.021	1.08	0.86	1.35	0.52
Non-daily use	83.9	2.08	1.65	2.61	<0.001	1.41	1.08	1.84	0.011
Daily use	91.8	4.61	3.22	6.58	<0.001	2.56	1.78	3.96	<0.001
Risks of smoking from nicotine					<0.001				<0.001
Nearly all (referent)	72.9	1.00	ref	ref	ref	1.00	ref	ref	ref
Much more than half	78.6	1.27	0.95	1.70	0.12	1.49	1.08	2.07	0.016
Around half	78.8	1.37	1.02	1.84	0.034	1.48	1.07	2.04	0.017
Some but well under half	82.2	1.67	1.25	2.24	0.001	1.47	1.06	2.02	0.019
None/very small	85.9	2.10	1.46	3.03	<0.001	1.50	1.01	2.24	0.046
Don’t know	57.7	0.52	0.38	0.71	<0.001	0.63	0.45	0.90	0.010
Relative harm of e-cigarettes
Not less harmful (referent)	56.4	1.00	ref	ref	ref	1.00	ref	ref	ref
Less harmful	90.3	6.67	5.51	8.06	<0.001	5.66	4.66	6.88	<0.001
Gender
Male (referent)	78.8	1.00	ref	ref	ref	1.00	ref	ref	ref
Female	76.3	0.89	0.74	1.07	0.20	1.13	0.88	1.46	0.35
Age (years)					0.092				0.122
18–24 (referent)	79.9	1.00	ref	ref	ref	1.00	ref	ref	ref
25–39	74.3	0.69	0.47	1.03	0.066	0.68	0.40	1.17	0.16
40–54	78.1	0.87	0.59	1.28	0.47	1.01	0.60	1.72	0.96
55 and over	78.6	0.89	0.61	1.31	0.55	1.13	0.67	1.92	0.65
Annual income					<0.001				0.25
Up to £15 000 (referent)	76.0	1.00	ref	ref	ref	1.00	ref	ref	ref
£15 001–£30 000	78.3	1.13	0.88	1.43	0.34	0.98	0.70	1.37	0.91
Over £30 000	80.4	1.30	1.02	1.66	0.035	1.15	0.82	1.61	0.43
Don’t know/prefer not to say	68.6	0.67	0.49	0.92	0.012	0.82	0.54	1.23	0.33

Models include 3279 observations from 1848 individuals.Bold font indicates significant associations (p<0.05).
LCI, Lower CI; UCI, Upper CI.