Table 5.

Dry mouth experience according to use of e-cigarettes, cannabis, and combustible tobacco, multivariable models

	Dry Mouth Frequency			Shortened Xerostomia Inventory
	Adjusted OR1,2	95% Confidence Interval	P-Value	Adjusted Ratio1,3	95% Confidence Interval	P-Value
E-Cigarette Use
0 days in past 30	reference			reference
1–5 days in past 30	1.22	0.84, 1.78	0.30	1.05	0.99, 1.11	0.13
6–30 days in past 30	1.40	0.69, 2.84	0.35	0.96	0.90, 1.01	0.12
Cannabis Use
0 days in past 30	reference			reference
1–5 days in past 30	1.57	1.06, 2.33	0.03	1.02	1.00, 1.04	0.06
6–30 days in past 30	3.17	1.47, 6.82	0.003	1.14	1.09, 1.19	<0.001
Combustible Tobacco Use4
0 days in past 30	reference			reference
1–30 days in past 30	1.92	1.38, 2.68	<0.001	1.13	0.99, 1.29	0.07

^1.Multivariable adjusted models included all exposures in the table, as well as gender, race/ethnicity, asthma, physical activity, and past 30-day alcohol use; missing values multiply imputed

^2.Ordered logistic regression; adjusted odds ratio represents the ratio (relative to reference) of odds of being in a more frequent category of dry mouth, holding all covariables constant

^3.Negative binomial regression; adjusted ratio represents ratio of Shortened Xerostomia Inventory score in the category of interest relative to reference, holding all covariables constant

^4.Includes cigarettes, cigars, and/or hookah; Categories of use 1–5 days and 6–30 days collapsed due to small cell sizes

Abbreviation: OR = odds ratio