Table 1.

Likelihood of No Substance Use (Scoring a “0″ for Number of Days Used) Based on Negative Binomial Hurdle Models.

	Alcohol Use			Binge Drinking			Cannabis Use			E-Cigarette Use
	B	p	OR	B	p	OR	B	p	OR	B	p	OR
Linear Time	−0.4	0.04	0.67	−0.85	0.02	0.43	−0.86	0.03	0.42	−2.42	<0.001	0.09
Quadratic Time	0.57	0.01	1.77	1.54	<0.001	4.66	0.37	0.38	1.45	1.08	0.02	2.94
Cubic Time	−0.68	<0.001	0.51	−1.11	<0.001	0.33	−0.54	0.21	0.58	−0.06	0.90	0.94
High School Status 1	−0.46	0.02	0.63	−1.15	0.01	0.32	−0.74	0.20	0.48	0.3	0.63	1.35
High School Status 2	−0.59	0.04	0.55	−0.26	0.67	0.77	−0.47	0.57	0.63	1.04	0.30	2.83
Gender	−0.01	0.98	0.99	−0.28	0.56	0.76	0.42	0.52	1.52	0.22	0.75	1.25
Pre-Pandemic Use	−0.89	<0.001	0.41	−1.32	<0.001	0.27	−1.88	<0.001	0.15	−0.89	<0.001	0.41
HS Status 1 X Linear Time	−0.41	0.13	0.66	−0.56	0.24	0.57	−0.81	0.16	0.44	2.32	<0.001	10.18
HS Status 2 X Linear Time	−0.69	0.06	0.50	−0.16	0.80	0.85	−0.85	0.20	0.43	1.76	0.04	5.81
HS Status 1 X Quadratic Time	−0.67	0.02	0.51	−0.76	0.11	0.47	1.01	0.08	2.75	0.25	0.70	1.28
HS Status 2 X Quadratic Time	0.47	0.23	1.60	0.48	0.43	1.62	0.16	0.81	1.17	−1.57	0.09	0.21
HS Status 1 X Cubic Time	0.08	0.79	1.08	0.2	0.68	1.22	−0.22	0.71	0.80	−0.16	0.80	0.85
HS Status 2 X Cubic Time	0.15	0.72	1.16	1.03	0.07	2.80	−0.62	0.37	0.54	−1.28	0.18	0.28

Note. Bold = p <.05. High School Status 1: 0 = high school student and 1 = teens transitioning out of high school (i.e., between T1 and T2). High School Status 2: 0 = high school student and 1 = prior graduate (i.e., those who graduated prior to our study). Gender: 1 = female and 0 = non-female.