Table 3.

Predictors of changing device type from W1 (2016) to W2 (2018)

		Changing device description (n = 792) 95% CI
	aOR	Lower Bound	Upper Bound	p
Country				0.54
AU	0.97	0.47	1.98	0.93
CA	1.39	0.86	2.25	0.180
EN	1.19	0.71	1.99	0.52
US				REF
Age				0.014
18 – 24	2.46	1.17	5.18	0.017
25 – 39	2.10	1.27	3.47	0.004
40 – 54	1.34	0.83	2.15	0.24
55+				REF
Education				0.053
Low	1.25	0.75	2.07	0.39
Moderate	0.74	0.46	1.19	0.22
High				REF
Income				0.70
Low	0.82	0.52	1.30	0.40
Moderate	0.88	0.57	1.37	0.57
High				REF
Sex
Female	0.93	0.66	1.33	0.70
Male				REF
Ethnicity
White	0.92	0.54	1.55	0.75
Nonwhite				REF
Vaping/Smoking Status at W1				0.001
Exclusive daily vaper				REF
Exclusive nondaily vaper	1.92	1.01	3.68	0.048
Predominant vaper	3.21	1.70	6.05	< .001
Predominant smoker	2.16	1.26	3.70	0.005
Dual daily user	2.57	1.54	4.28	< .001
Concurrent nondaily user	1.28	0.54	3.06	0.58
Device Description at W1				< .001
Box-tank				REF
Pen-tank	4.46	2.68	7.42	< .001
Pen-Cartridge	9.98	4.67	21.31	< .001
Cigalike	3.63	2.08	6.32	< .001
All others	29.97	12.74	70.51	< .001
Nicotine Content at W1				0.09
0 mg/ml	0.80	0.33	1.96	0.63
≤ 20 mg/ml	0.53	0.29	0.99	0.045
21+ mg/ml				REF