Table 1.
Descriptive statistics for the substance use variables and delinquent behavior at each wave for psychiatrically hospitalized early adolescents
| Variable, M (SD) or N (%) | Baseline N = 108 |
Study wave 9 months N = 83 |
18 months N = 81 |
|---|---|---|---|
| Alcohol frequency | 1.04 (1.39) | 1.08 (1.39) | 1.30 (1.40) |
| Never used | 55 (51%) | 36 (43%) | 30 (37%) |
| Lifetime use, 0 of past 30 days | 23 (21%) | 27 (32%) | 24 (29%) |
| Lifetime use, 1–2 of past 30 days | 15 (14%) | 9 (11%) | 12 (15%) |
| Lifetime use, 3–5 of past 30 days | 5 (5%) | 4 (5%) | 8 (10%) |
| Lifetime use, 6–10 of past 30 days | 6 (6%) | 2 (2%) | 5 (6%) |
| Lifetime use, 10+ of past 30 days | 4 (4%) | 5 (6%) | 3 (4%) |
| Marijuana frequency | .87 (1.33) | .80 (1.25) | 1.11 (1.44) |
| Never used | 61 (57%) | 48 (59%)a | 36 (44%) |
| Lifetime use, 0 of past 30 days | 25 (23%) | 18 (22%) | 27 (33%) |
| Lifetime use, 1–2 of past 30 days | 10 (9%) | 4 (5%) | 3 (4%) |
| Lifetime use, 3–5 of past 30 days | 3 (3%) | 6 (7%) | 7 (9%) |
| Lifetime use, 6–10 of past 30 days | 5 (5%) | 4 (5%) | 4 (5%) |
| Lifetime use, 10+ of past 30 days | 4 (4%) | 1 (1%) | 4 (5%) |
| Delinquent behavior questionnaire | 21.08 (9.09) | 18.16 (8.72) | 16.95 (5.40) |
a
Due to varying Ns at the different follow-up periods, the percent of adolescents reporting “never used” increased slightly from baseline to 9 months