Table 2.

Adjusted Results of Interaction Model on E-Cigarette Use Status by Sexual Orientation and Ethnicity, Stratified by Sex

	Boys					Girls
	Experiment		Current		Experiment		Current
	aRRR (95% CI)	p-value	aRRR (95% CI)	p-value	aRRR (95% CI)	p-value	aRRR (95% CI)	p-value
Sexual orientation
Heterosexual	ref		ref		ref		ref
Gay or lesbian	1.45 (0.85, 2.47)	0.173	0.68 (0.31, 1.52)	0.349	0.90 (0.55, 1.45)	0.657	0.79 (0.45, 1.39)	0.405
Bisexual	0.78 (0.51, 1.20)	0.261	0.43 (0.23, 0.78)	0.006	1.19 (0.96, 1.48)	0.112	0.77 (0.57, 1.04)	0.085
Unsure	0.54 (0.31, 0.95)	0.033	0.34 (0.15, 0.75)	0.008	0.85 (0.57, 1.25)	0.401	0.55 (0.37, 0.84)	0.005
Hispanic
No	ref		ref		ref		ref
Yes	1.27 (1.06, 1.53)	0.010	0.90 (0.73, 1.12)	0.350	1.27 (1.05, 1.54)	0.014	0.84 (0.62, 1.14)	0.261
Sexual orientationa Hispanic
Heterosexuala non-Hispanic	ref		ref		ref		ref
Gay/lesbiana Hispanic	0.42 (0.12, 1.41)	0.158	0.96 (0.19, 4.74)	0.958	0.63 (0.18, 2.14)	0.454	1.13 (0.28, 4.47)	0.863
Bisexuala Hispanic	2.60 (0.72, 9.44)	0.145	2.02 (0.73, 5.59)	0.175	0.85 (0.54, 1.34)	0.478	1.30 (0.70, 2.39)	0.399
Unsurea Hispanic	0.97 (0.36, 2.60)	0.945	1.08 (0.32, 3.61)	0.905	1.23 (0.55, 2.75)	0.619	2.30 (0.84, 6.27)	0.102
Survey year
2015	ref		ref		ref		ref
2017	1.05 (0.81, 1.35)	0.730	0.56 (0.37, 0.86)	0.009	0.88 (0.70, 1.09)	0.235	0.28 (0.20, 0.38)	<0.001
2019	1.12 (0.88, 1.43)	0.361	2.97 (2.13, 4.15)	<0.001	1.04 (0.82, 1.32)	0.731	3.05 (2.32, 4.02)	<0.001
Age, years
12–15	ref		ref		ref		ref
16–18 or older	1.31 (1.12, 1.53)	0.001	1.34 (1.14, 1.58)	0.001	1.49 (1.30, 1.71)	<0.001	1.26 (1.04, 1.52)	0.021
Race
White only	ref		ref		ref		ref
Black only	1.12 (0.88, 1.43)	0.359	0.55 (0.40, 0.76)	<0.001	0.82 (0.64, 1.05)	0.120	0.45 (0.33, 0.61)	<0.001
Other races/>1 race	1.13 (0.89, 1.44)	0.300	0.90 (0.71, 1.14)	0.368	0.93 (0.77, 1.11)	0.406	0.71 (0.55, 0.91)	0.007
Past 12-month externalizing
No	ref		ref		ref		ref
Yes	1.20 (0.97, 1.49)	0.092	1.64 (1.39, 1.94)	<0.001	1.18 (0.96, 1.45)	0.115	1.42 (1.15, 1.76)	0.001
Past 12-month internalizing
No	ref		ref		ref		ref
Yes	1.21 (1.00, 1.47)	0.045	1.09 (0.91, 1.30)	0.352	1.45 (1.27, 1.66)	<0.001	1.75 (1.46, 2.10)	<0.001
Past 12-month any bully
None	ref		ref		ref		ref
Any	0.87	0.210	1.11	0.370	1.08	0.316	1.29	0.010
	(0.70, 1.08)		(0.89, 1.38)		(0.93, 1.27)		(1.06, 1.56)
Current cigarette
No	ref		ref		ref		ref
Yes	1.92 (1.27, 2.90)	0.002	3.56 (2.22, 5.69)	<0.001	1.97 (1.33, 2.93)	0.001	5.82 (3.93, 8.62)	<0.001
Current other tobacco
No	ref		ref		ref		ref
Yes	3.20	<0.001	7.46	<0.001	1.95	0.018	2.89	<0.001
	(2.28, 4.50)		(5.09, 10.94)		(1.12, 3.39)		(1.61, 5.18)
Current alcohol
No	ref		ref		ref		ref
Yes	2.08 (1.71, 2.53)	<0.001	4.73 (3.65, 6.15)	<0.001	2.30 (1.94, 2.73)	<0.001	7.37 (6.31, 8.62)	<0.001
Current cannabis
No	ref		ref		ref		ref
Yes	3.15 (2.39, 4.15)	<0.001	8.32 (6.08, 11.38)	<0.001	3.43 (2.74, 4.30)	<0.001	7.83 (5.86, 10.45)	<0.001
Ever any illicit drug
No	ref		ref		ref		ref
Yes	2.13 (1.71, 2.65)	<0.001	2.02 (1.60, 2.55)	<0.001	1.95 (1.61, 2.37)	<0.001	1.95 (1.57, 2.42)	<0.001

Note: Boldface indicates statistical significance (p<0.05).

^aMain effects and interaction effects are simultaneously tested in each model.

aRRR, adjusted RRR.