Table 2.

Association between year (continuous from 2008 to 2017) and smoking and quitting behavior.

Smoking and quitting behaviour	Unadjusted		Adjusted for socio‐demographic characteristics
	B (95% CI)	P	B (95% CI)	P
Cigarettes per day	−0.29 (−0.32, −0.26)	< 0.001	−0.30 (−0.33, −0.27)	< 0.001
Time to first cigarette scorea	−0.03 (−0.03, −0.02)	< 0.001	−0.03 (−0.03, −0.02)	< 0.001
	OR (95% CI)	P	OR (95% CI)	P
Non‐daily smoker	1.03 (1.01, 1.04)	< 0.001	1.03 (1.02, 1.04)	< 0.001
Smoking roll‐your‐own	1.07 (1.07, 1.08)	< 0.001	1.08 (1.07, 1.09)	< 0.001
Currently cutting down	0.96 (0.95, 0.97)	< 0.001	0.96 (0.95, 0.97)	< 0.001
Current use of e‐cigarette	1.45 (1.43, 1.46)	< 0.001	1.45 (1.43, 1.47)	< 0.001
Current use of NRT	0.90 (0.89, 0.91)	< 0.001	0.90 (0.89, 0.91)	< 0.001
Tried to quit in past year	0.96 (0.96, 0.97)	< 0.001	0.97 (0.96, 0.97)	< 0.001
Most recent quit attempt was abruptb	0.96 (0.94, 0.97)	< 0.001	0.96 (0.95, 0.97)	< 0.001
Use of support during the most recent quit attemptb
Pharmacologicalc	1.04 (1.02, 1.05)	< 0.001	1.04 (1.02, 1.05)	< 0.001
Behaviourald	0.89 (0.86, 0.92)	< 0.001	0.89 (0.86, 0.92)	< 0.001
None	0.97 (0.96, 0.99)	< 0.001	0.98 (0.96, 0.99)	< 0.001

^aExcluding data from the first three waves of 2008 (waves 16–18, inclusive) as the lowest two scoring responses for this question were not distinguished. Time to first cigarette scoring (0: > 60 minutes; 1: 30–60 minutes; 2: 6–30 minutes; 3: < 5 minutes).

^bQuestion only asked in those who tried to quit in past year.

^cPharmacological: use of any prescription medication, alternative nicotine product or e‐cigarette

^dBehavioural: use of any face‐to‐face behavioural support [National Health Service (NHS)/non‐NHS stop smoking group/one‐to‐one]. OR = odds ratio; CI = confidence interval; NRT = nicotine replacement therapy.