Associations between vaping and relapse to smoking: preliminary findings from a longitudinal survey in the UK

Table 4 Aim 2: Associations between wave 4 frequency of e-cigarette use, device type, nicotine strength, use of NRT, time quit smoking, socio-demographics and relapse to smoking during follow-up, n = 159

		% relapsed	Unadjusted (bivariate) analysis				Adjusted (multivariable) analysis
			OR	95% CI		p value	OR	95% CI		p value
Vaping status	Non-daily use	65.0	3.52	1.32	9.41	0.012	3.88	1.10	13.62	0.035
Vaping status	Daily use (ref)	34.5	1	1	1	Ref	1	1	1	Ref
Device type	Disposable, cartridges, unknown	41.9	3.09	1.11	8.57	0.031	2.83	0.90	8.95	0.076
	Tanks	45.6	3.59	1.41	9.13	0.007	3.63	1.33	9.95	0.012
	Modular (ref)	18.9	1	1	1	Ref	1	1	1	Ref
Nicotine strength	None, unknown	36.4	1.32	0.53	3.32	0.55	0.54	0.17	1.74	0.30
	1 to 14 mg/ml	45.2	1.91	0.91	4.02	0.090	1.51	0.66	3.44	0.33
	15 mg/ml and over (ref)	30.2	1	1	1	Ref	1	1	1	Ref
NRT use	Yes	50.0	1.71	0.64	4.58	0.29	1.25	0.41	3.80	0.70
NRT use	No (ref)	36.9	1	1	1	Ref	1	1	1	Ref
Time quit smoking	2 to 12 months	64.0	4.90	2.39	10.04	< 0.001	4.62	2.11	10.09	< 0.001
Time quit smoking	> 12 months (ref)	26.6	1	1	1	Ref	1	1	1	Ref
Gender	Male	38.2	0.99	0.52	1.87	0.96
Gender	Female (ref)	38.6	1	1	1	Ref
Age	Per year increase	41.7	0.98	0.96	1.00	0.068
Income	Not disclosed, low, moderate	35.1	0.70	0.36	1.34	0.28
Income	High (ref)	43.5	1	1	1	Ref

ISSN: 1477-7517