. 2020 Nov 26;116(5):1233–1244. doi: 10.1111/add.15295

Table 2.

Association of the timing of the COVID‐19 lockdown with smoking and quitting behaviour in England

	% (95% CI)	OR (95% CI)	P	OR_adj (95% CI)	P
Smoking prevalence^a
Before	15.9 (15.4–16.4)	1.00	–	–^f	–
After	17.0 (15.2–18.9)	1.09 (0.95–1.24)	0.228	–	–
Cessation^b
Before	4.1 (3.4–4.9)	1.00	–	1.00	–
After	8.8 (6.0–12.4)	2.28 (1.50–3.47)	< 0.001	2.63 (1.69–4.09)	< 0.001
Quit attempts^b
Before	29.1 (27.5–30.7)	1.00	–	1.00	–
After	39.6 (34.2–45.1)	1.61 (1.27–2.03)	< 0.001	1.56 (1.23–1.98)	< 0.001
Quit success^c
Before	13.9 (11.7–16.3)	1.00	–	1.00	–
After	21.3 (14.5–29.4)	1.71 (1.08–2.72)	0.023	2.01 (1.22–3.33)	0.007
Use of evidence‐based support^c ^, ^d
Before	51.5 (48.1–54.8)	1.00	–	1.00	–
After	50.0 (41.0–59.0)	0.94 (0.65–1.36)	0.748	1.10 (0.72–1.68)	0.647
Use of remote support^c ^, ^e
Before	2.7 (1.7–4.0)	1.00	–	1.00	–
After	10.9 (6.1–17.7)	4.23 (2.12–8.46)	< 0.001	3.59 (1.56–8.23)	0.003

All data are weighted to match the adult population in England on age, social grade, region, tenure, ethnicity and working status within sex.

CI = confidence interval; OR = unadjusted odds ratio; OR_adj = odds ratio adjusted for age, sex, social grade, region (and, for analyses of cessation, quit success and use of support, heaviness of smoking index). Before, April 2019–February 2020; after, April 2020.

^{^a}

Among all adults (before n = 18 880, after n = 1670);

^{^b}

among past‐year smokers (before n = 3165, after n = 329);

^{^c}

among past‐year smokers who made a quit attempt (before n = 894, after n = 128);

^{^d}

prescription medication, face‐to‐face behavioural support, nicotine replacement therapy obtained over the counter, e‐cigarettes;

^{^e}

telephone support, websites or apps;

^{^f}

No adjusted analysis was performed for smoking prevalence.