Table 4b:
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.