Table 2.

Associations between reasons for vaping by 23 years and continued vaping and continued smoking at 24 years.

	Vaping at 24 years among ever vapers and ever smokers by 23 years (n = 668)				Smoking at 24 years among ever vapers by 23 years and regular smokers just prior to vaping* (n = 412)
Reason for vaping by 23 years	N (%)	OR	95 % CI	p-value	N (%)	OR	95 % CI	p-value
To quit smoking	228 (34 %)	3.51	2.29, 5.38	<.001	217 (53 %)	0.50	0.32, 0.78	.002
To cut down	166 (25 %)	2.90	1.87, 4.50	<.001	158 (38 %)	1.62	1.02, 2.58	.041
To curb cravings	75 (11 %)	4.35	2.57, 7.37	<.001	70 (17 %)	0.84	0.47, 1.49	.553
Pleasure	118 (18 %)	3.22	2.01, 5.15	<.001	57 (14 %)	0.88	0.47, 1.65	.685
Curiosity	351 (53 %)	0.41	0.26, 0.63	<.001	158 (38 %)	1.66	1.04, 2.65	.035
Friends used them	153 (23 %)	0.63	0.37, 1.09	.10	71 (17 %)	1.78	0.95, 3.36	.073

The analyses were run on multiply imputed data for individuals who ever smoked and ever vaped. Both analyses adjusted for demographic factors (sex, ethnicity, socioeconomic position, and age in months at 23-year questionnaire). *This analysis was restricted to those who had reported that they smoked regularly just before they started vaping. OR = Odds ratio. Note: OR = Odds ratio.