Table 1.

Descriptive Statistics

Variables (Street Months)	Mean or Percentage (St. Dev)
Total Street Months Employed	61.95%
Hours Worked Per Week	28.44 (25.70)
Monthly Income	1521.723 (1972.856)
Job Commitment	2.58 (2.17)
Weekly Marijuana Use	63.33%
Weekly Powder/Crack Use	15.72%
Weekly Heroin Use	4.95%
Weekly Other Drug Use	21.50%
Weekly Drug Use Excluding Marijuana	36.36%
N of cases	3,840 street months
Variables (Person)
Black	43.70%
Other	7.57%
Age	24.78 (3.93)
Married	12.42%
Low Self-Control	27.82%
Years of Education	11.11 (1.88)
N of cases	250