Table 3.

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

Variables	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	1.08 (0.60, 1.92)	0.799	0.70 (0.32, 1.53)	0.369	0.68 (0.41, 1.13)	0.139	0.48 (0.24, 0.94)	0.032
Bisexual	0.92 (0.58, 1.48)	0.743	0.41 (0.22, 0.77)	0.005	1.21 (0.93, 1.57)	0.164	0.80 (0.57, 1.11)	0.185
Unsure	0.73 (0.43, 1.26)	0.256	0.51 (0.24, 1.08)	0.079	0.77 (0.51, 1.17)	0.223	0.54 (0.36, 0.81)	0.003
Race
White only	ref		ref		ref		ref
Black only	1.14 (0.89, 1.47)	0.305	0.57 (0.41, 0.80)	0.001	0.76 (0.57, 1.02)	0.071	0.37 (0.27, 0.53)	<0.001
Others	1.15 (0.90, 1.48)	0.265	0.91 (0.71, 1.16)	0.439	0.96 (0.78, 1.17)	0.666	0.70 (0.53, 0.92)	0.011
Sexual orientationa race
Heterosexuala White only	ref		ref		ref		ref
Gay/lesbian X Black	1.42 (0.45, 4.46)	0.542	0.84 (0.08, 8.75)	0.886	2.39 (0.98, 5.85)	0.055	6.99 (2.21, 22.14)	0.001
Gay/lesbian X others	1.61 (0.47, 5.59)	0.447	0.98 (0.22, 4.40)	0.981	1.79 (0.57, 5.62)	0.313	3.60 (1.06, 12.26)	0.041
Bisexual X Black	0.68 (0.23, 2.04)	0.492	2.06 (0.16, 26.66)	0.578	0.97 (0.50, 1.89)	0.924	1.30 (0.66, 2.53)	0.446
Bisexual X others	0.91 (0.33, 2.55)	0.861	1.90 (0.61, 5.87)	0.264	0.81 (0.48, 1.38)	0.438	0.89 (0.40, 2.00)	0.782
Unsure X Black	0.36 (0.04, 3.02)	0.345	0.10 (0.01, 1.39)	0.086	2.69 (0.91, 7.90)	0.072	2.98 (0.97, 9.09)	0.055
Unsure X others	0.31 (0.07, 1.33)	0.144	0.28 (0.10, 0.76)	0.013	0.80 (0.39, 1.66)	0.552	1.28 (0.50, 3.30)	0.609
Survey year
2015	ref		ref		ref		ref
2017	1.04 (0.81, 1.35)	0.734	0.56 (0.37, 0.85)	0.008	0.88 (0.70, 1.09)	0.237	0.28 (0.20, 0.38)	<0.001
2019	1.12 (0.88, 1.43)	0.355	2.97 (2.13, 4.13)	<0.001	1.04 (0.83, 1.32)	0.710	3.07 (2.32, 4.06)	<0.001
Age, years
12–15	ref		ref		ref		ref
16–18 or older	1.31 (1.12, 1.53)	0.001	1.35 (1.14, 1.59)	0.001	1.49 (1.30, 1.70)	<0.001	1.25 (1.03, 1.51)	0.023
Hispanic
No	ref		ref		ref		ref
Yes	1.28 (1.08, 1.53)	0.006	0.92 (0.76, 1.13)	0.434	1.24 (1.01, 1.52)	0.037	0.91 (0.69, 1.20)	0.507
Past 12-month externalizing
No	ref		ref		ref		ref
Yes	1.19 (0.96, 1.48)	0.107	1.63 (1.38, 1.93)	<0.001	1.18 (0.96, 1.45)	0.106	1.43 (1.16, 1.77)	0.001
Past 12-month internalizing
No	ref		ref		ref		ref
Yes	1.20 (1.00, 1.45)	0.051	1.08 (0.90, 1.29)	0.394	1.46 (1.28, 1.67)	<0.001	1.78 (1.48, 2.13)	<0.001
Past 12-month any bully
None	ref		ref		ref		ref
Any	0.87 (0.70, 1.09)	0.233	1.12 (0.90, 1.39)	0.316	1.08 (0.93, 1.27)	0.315	1.30 (1.07, 1.58)	0.008
Current cigarette
No	ref		ref		ref		ref
Yes	1.89 (1.25, 2.86)	0.003	3.55 (2.23, 5.66)	<0.001	1.97 (1.33, 2.94)	0.001	5.88 (3.97, 8.72)	<0.001
Current other tobacco
No	ref		ref		ref		ref
Yes	3.20 (2.26, 4.53)	<0.001	7.55 (5.19, 10.99)	<0.001	1.93 (1.11, 3.35)	0.021	2.83 (1.60, 4.99)	<0.001
Current alcohol
No	ref		ref		ref		ref
Yes	2.10 (1.73, 2.54)	<0.001	4.75 (3.67, 6.16)	<0.001	2.29 (1.94, 2.71)	<0.001	7.34 (6.27, 8.59)	<0.001
Current cannabis
No	ref		ref		ref		ref
Yes	3.14 (2.38, 4.15)	<0.001	8.34 (6.06, 11.49)	<0.001	3.43 (2.73, 4.30)	<0.001	7.84 (5.88, 10.44)	<0.001
Ever any illicit drug
No	ref		ref		ref		ref
Yes	2.12 (1.70, 2.64)	<0.001	2.01 (1.58, 2.55)	<0.001	1.95 (1.61, 2.37)	<0.001	1.94 (1.56, 2.40)	<0.001

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

Main effects and interaction effects are simultaneously tested in each model.

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

aRRR, adjusted RRR.