Table 2.
Included studies by domain and study design.
| Focus of studies |
Study designs |
|||||
|---|---|---|---|---|---|---|
| Domain | Total Studies (N) | Alcohol (n) | Other Drugs (n) | Both (n) | RCTs (n) | Other designs (n) |
| Prevention | 5 | 2 | 0 | 3 | 2 | 3 |
| Reduction | 8 | 5 | 0 | 3 | 3 | 5 |
| Treatment | 19 | 7 | 7 | 5 | 10 | 9 |
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