Table 3.

Logistic regression analysis of the association between e-cigarette use and coronary heart disease, NHIS 2016 and 2017.

Coronary heart disease	2016			2017			2016 and 2017 (pooled)
	OR	95% CI	p value	OR	95% CI	p value	OR	95% CI	p value
E-cigarette use
Never (referent)
Daily	1.89	1.01–3.53	0.047	0.66	0.29–1.48	0.312	1.31	0.79–2.17	0.286
Some days	0.93	0.51–1.70	0.814	1.48	0.74–2.94	0.268	1.13	0.70–1.83	0.624
Former	1.06	0.79–1.41	0.715	1.00	0.73–1.37	0.978	1.03	0.83–1.28	0.772
Smoking
Never (referent)
Daily	1.55	1.23–1.96	<0.001	1.94	1.51–2.48	<0.001	1.73	1.46–2.05	<0.001
Some days	1.57	1.06–2.32	0.024	1.96	1.30–2.96	0.001	1.75	1.32–2.32	<0.001
Former ⩽6 years	1.88	1.42–2.48	<0.001	2.06	1.47–2.88	<0.001	1.96	1.58–2.44	<0.001
Former >6 years	1.34	1.15–1.55	<0.001	1.53	1.30–1.80	<0.001	1.43	1.28–1.60	<0.001
Hypertension	2.53	2.12–3.02	<0.001	2.52	2.07–3.07	<0.001	2.53	2.22–2.89	<0.001
Hypercholesterolemia	2.77	2.37–3.24	<0.001	2.43	2.06–2.87	<0.001	2.59	2.32–2.90	<0.001
Blood glucose
Prediabetes	1.09	0.80–1.49	0.583	1.18	0.82–1.72	0.368	1.14	0.90–1.45	0.153
Diabetes	1.74	1.46–2.06	<0.001	1.67	1.40–1.98	<0.001	1.70	1.51–1.93	<0.001
Gender
Male (referent)
Female	0.56	0.49–0.64	<0.001	0.54	0.47–0.62	<0.001	0.55	0.50–0.61	<0.001
Race
White (referent)
Black/African American	0.96	0.77–1.20	0.717	1.03	0.82–1.28	0.819	0.99	0.85–1.15	0.912
AIAN	1.43	0.74–2.75	0.288	0.23	0.07–0.68	0.009	0.73	0.43–1.26	0.260
Asian	0.64	0.43–0.97	0.036	0.93	0.64–1.36	0.707	0.79	0.59–1.04	0.092
Multiple/not releasable	1.71	0.92–3.18	0.089	1.03	0.62–1.71	0.914	1.31	0.86–2.01	0.213
Age (per year)	1.06	1.06–1.07	<0.001	1.07	1.06–1.07	<0.001	1.06	1.06–1.07	<0.001
BMI (per unit)	1.00	0.99–1.00	0.397	1.00	0.99–1.01	0.878	1.00	1.00–1.00	0.641

AIAN, American Indian or Alaska Native; BMI, body mass index.