Table 1.
Demographics and clinical characteristics of the subject population.
| Demographics/Clinical Characteristics | Mean | SD | 25th Percentile | 75th Percentile |
|---|---|---|---|---|
| Age at Baseline (years) | 18.41 | 0.63 | 18 | 19 |
| Age of first drink (years) | 15.73 | 1.76 | 15 | 17 |
| Average time between imaging scans (months) | 24.75 | 4.70 | 21.6 | 28.5 |
| Number of days alcohol was consumed in past 30 days (average across 24 mo) | 3.53 | 3.54 | 0.59 | 5.59 |
| Number of binge episodes during the past 30 days (average across 24 mo) | 2.08 | 2.62 | 0.05 | 3.6 |
| Number of Drinks Consumed during each occasion (average across 24 mo) | 3.05 | 2.83 | 0.47 | 5.23 |
| Maximum number of drinks at a single sitting (average across 24 mo) | 4.37 | 4.02 | 0.86 | 6.83 |
| Average MJ Use (Baseline and Follow up; N=143) | 2.68 | 5.14 | 0 | 3.34 |
| Average memory blackouts during past 6 months (Baseline and Follow up) | 2.25 | 4.56 | 0 | 2 |
| CVLT Total Recall at Follow up (N=140) | 53.71 | 8.92 | 49 | 59 |
| STAI at Baseline (N=134) | 41.72 | 10.58 | 34 | 47.75 |
| BDI at Baseline (N=135) | 4.04 | 5.33 | 1 | 6 |
| N | % | |||
| Sex | ||||
| Male | 61 | 41.80 | ||
| Female | 85 | 58.20 | ||
| Smoking Status | ||||
| Non-Smoker | 130 | 89.00 | ||
| Smoker | 5 | 3.40 | ||
| Missing | 11 | 7.50 | ||
| ADHD Status | ||||
| No | 124 | 84.90 | ||
| Yes | 6 | 4.10 | ||
| Missing | 16 | 11.00 | ||
| Family History of Alcoholism | ||||
| No | 95 | 65.10 | ||
| Yes | 40 | 27.40 | ||
| Missing | 11 | 7.50 |