Table 1.
Description of Study Variables (Unweighted)
| Variable | Marijuana Sample Mean (SD) or Proportion | Binge Sample Mean (SD) or Proportion |
|---|---|---|
| Neighborhood Characteristics | ||
| Proportion Below Poverty Line | 0.14 (0.13) | 0.14 (0.13) |
| Proportion Households Female-Headed | 0.07 (0.07) | 0.07 (0.07) |
| Unemployment Rate (Percent) | 7.46 (5.62) | 7.56 (5.69) |
| Residential Instability | 0.57 (0.15) | 0.56 (0.15) |
| Neighborhood Cohesion | 0.76 (0.43) | 0.75 (0.43) |
| Perceived Safety | 0.90 (0.29) | 0.90 (0.31) |
| Selected Neighborhood | 0.82 (0.38) | 0.81 (0.39) |
| Moved Between Waves | 0.05 (0.22) | 0.05 (0.21) |
| Personal Demographics | ||
| Male | 0.46 (0.50) | 0.46 (0.50) |
| Age (in years) | 15.02 (1.59) | 15.01 (1.57) |
| Black | 0.20 (0.40) | 0.23 (0.42) |
| Hispanic | 0.15 (0.36) | 0.15 (0.36) |
| Other Race (reference category = white) | 0.10 (0.29) | 0.10 (0.30) |
| Household Income (in thousands) | 46.94 (50.35) | 45.88 (43.64) |
| Mother's Education | 4.12 (1.67) | 4.13 (1.67) |
| Both Parents In Home | 0.72 (0.45) | 0.71 (0.46) |
| Friends | ||
| Proportion School Friends Using Marijuana | 0.06 (0.18) | 0.06 (0.19) |
| Proportion School Friends Binge Drinking | 0.14 (0.29) | 0.13 (0.27) |
| Only Outside-of-School Friends | 0.17 (0.38) | 0.18 (0.38) |
| Best Frierd a “Good Influence” | 0.65 (0.48) | 0.64 (0.48) |
| Behavioral and Family Risk Factors | ||
| Respondent Marijuana Use at Wave 1 | ---- | 0.05 (0.22) |
| Respondent Binge Drinking at Wave 1 | 0.12 (0.33) | ---- |
| Trouble at School | 3.68 (2.65) | 3.76 (2.70) |
| Delinquency | 2.97 (3.59) | 3.16 (3.86) |
| Low School Participation | 0.13 (0.34) | 0.14 (0.35) |
| Low Parental Control | 4.92 (1.56) | 4.92 (1.56) |
| Closeness to Mother | 4.48 (1.05) | 4.46 (1.06) |
| Drugs Available In Home | 0.02 (0.13) | 0.02 (0.14) |
| Alcohol Available In Home | 0.28 (0.45) | 0.28 (0.45) |