Table 1

Sample, longitudinal survey

	2013 n=1848		2014 n=1431
	Frequency	Per cent	Frequency	Per cent	Comparison
Gender					χ²=0.69, p=0.41
Male	1084	58.7	860	60.1
Female	764	41.3	571	39.9
Age (years)					χ²=14.19, p=0.003
18–24	139	7.5	86	6.0
25–39	471	25.5	314	21.9
40–54	594	32.1	450	31.4
55 and over	644	34.8	581	40.6
Annual income					χ²=0.07, p>0.99
Up to £15 000 (low)	441	23.9	339	23.7
£15 001–£30 000 (middle)	572	31.0	439	30.7
Over £30 000 (high)	649	35.1	508	35.5
Don't know/prefer not to say	186	10.1	145	10.1
Smoking status					χ²=80.37, p<0.001
Ex-smoker	247	13.4	368	25.7
Current smoker	1601	86.6	1063	74.3
E-cigarette use status					χ²=7.29, p=0.06
Never tried	781	42.3	593	41.4
Tried, not using	385	20.8	342	23.9
Less than daily use	448	24.2	303	21.2
Daily use	234	12.7	193	13.5
Health risks of smoking from nicotine					χ²=3.65, p=0.60
None or very small	212	11.5	156	10.9
Some but well under half the risk	452	24.5	378	26.4
Around half the risk	393	21.3	314	21.9
Much more than half the risk	359	19.4	280	19.6
Nearly all the risk	231	12.5	168	11.7
Don't know	201	10.9	135	9.4
Relative harm of e-cigarettes					χ²=39.13, p<0.001
More harmful than cigarettes	38	2.1	32	2.2
Equally harmful	199	10.8	263	18.4
Less harmful than cigarettes	1199	64.9	843	58.9
Don't know	412	22.3	293	20.5