Table 4b:

The Association between Perceived Friend SAM Norms and SAM Consequences in the Past 3 Months (N = 1359)

Parameter	Estimate	Standard Error	IRR; 95% Confidence Limits			Wald Chi-Square
			Low	IRR	High
Intercept	−1.31	0.26	−1.81		−0.81	26.10***
Friend Norms	0.45	0.07	0.32		0.58	45.89***
Male	0.04	0.11	−0.18		0.25	0.10
White	−0.05	0.13	−0.31		0.22	0.12
Asian	−0.30	0.19	−0.68		0.07	2.47
School A	−0.06	0.14	−0.22		0.34	0.15
School C	0.34	0.14	0.07		0.60	6.14*
Fairly Easy Access	0.57	0.21	0.17		0.98	7.61**
Very Easy Access	0.68	0.21	0.27		1.09	10.54**
SAM Frequency	0.05	0.01	0.04		0.07	54.77***
Dispersion	2.97	0.20	2.60		3.40	-

Notes: IRR =Incidence rate ratio. Alcohol and marijuana frequency are measured in the past 30 days (4a). SAM frequency is measured in the past 3 months (4b). Other is the reference group for White and Asian. Female is the reference group for male; those who selected a non-binary gender identity (n = 29) were eliminated from these analyses. School B (decriminalized) is the reference group for School A (illegal) and School C (legal for 21+). Difficult access to marijuana is the reference group for Fairly Easy and Very Easy access.

^*p < .05;

^**p < .01;

^***p < .001.