Table 4a:
The Association between Perceived Friend SAM Norms and SAM Frequency in the Past 30 Days (N = 1358)
| Parameter | Estimate | Standard Error | IRR; 95% Confidence Limits | Wald Chi-Square | ||
|---|---|---|---|---|---|---|
| Low | IRR | High | ||||
| Intercept | −1.98 | 0.18 | −2.33 | −1.63 | 123.03*** | |
| Friend Norms | 0.37 | 0.04 | 0.29 | 0.44 | 95.81*** | |
| Male | 0.03 | 0.07 | −0.11 | 0.16 | 0.15 | |
| White | 0.04 | 0.09 | −0.13 | 0.22 | 0.24 | |
| Asian | −0.04 | 0.13 | −0.29 | 0.22 | 0.09 | |
| School A | 0.18 | 0.09 | 0.01 | 0.36 | 4.18* | |
| School C | 0.08 | 0.09 | −0.09 | 0.25 | 0.82 | |
| Fairly Easy Access | 0.33 | 0.15 | −0.04 | 0.62 | 4.96* | |
| Very Easy Access | 0.21 | 0.15 | −0.08 | 0.51 | 2.08 | |
| Alcohol Frequency | 0.09 | 0.01 | 0.07 | 0.10 | 192.50*** | |
| Marijuana Frequency | 0.07 | 0.00 | 0.06 | 0.07 | 337.48*** | |
| Dispersion | 0.57 | 0.06 | 0.47 | 0.69 | - | |