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