Table 1. Demographic and substance use characteristics.
| Bingers (n = 13) M (SD) | Control (n = 13) M (SD) | |
|---|---|---|
| Baseline | ||
| Gender (male/female) | 8/5 | 8/5 |
| Family history density | 0.30 (0.32) | 0.29 (0.25) |
| Age | 14.89 (1.22) | 14.94 (1.07) |
| Pubertal stage | 4.00 (1.15) | 3.85 (1.07) |
| IQ | 112.69 (8.71) | 114.46 (6.31) |
| Hollingshead SES | 23.23 (11.77) | 27.62 (10.73) |
| Lifetime drinks | 0.85 (1.82) | 0.00 (0.00) |
| Lifetime marijuana use | 0.00 (0.00) | 0.00 (0.00) |
| Revisit | ||
| Age | 17.70 (1.16) | 17.02 (1.11) |
| Pubertal stage | 4.77 (0.44) | 4.58 (0.67)a |
| IQ | 113.00 (15.85) | 115.15 (9.92) |
| Hollingshead SES | 24.31 (11.34) | 27.23 (12.42) |
| Lifetime drinks* | 55.35 (32.28) | 0.00 (0.00) |
| Age first drank | 15.38 (1.98) | - |
| Drinking days (past 3 months)* | 6.45 (3.84) | 0.00 (0.00) |
| Drinks per drinking day (past 3 months)* | 4.74 (1.20) | 0.00 (0.00) |
| Heavy drinking days (≥4 drinks, past 3 months)* | 4.92 (3.35) | 0.00 (0.00) |
| Largest amount drank (past 3 months)* | 6.69 (2.01) | 0.00 (0.00) |
| Lifetime marijuana use* | 67.38 (110.18) | 0.00 (0.00) |
| Age first smoked marijuana | 14.90 (1.79)b | - |
*
p < 0.05
a
n = 12 because of missing data
b
n = 10 because 3 subjects did not report marijuana use