| Alcohol | Crack | p |
SDS*A (Alcohol = 53; Crack = 52) | 8.9 (±3.6) | 10.6 (±2.7) | 0.008 |
Age of first alcohol use*A(n = 105) | 17.0 (±6.9) | 14.3 (±5.1) | 0.02 |
Age of first crack useA (n = 56) | 24.0 (±8.0) | 20.8 (±7.8) | 0.29 |