TABLE 1

Key Variables

VariablesValues
Past-year substance use, n (%)
 SCs, baseline (n = 955)
  No831 (87.29)
  Yes124 (12.98)
 SCs, follow-up (n = 889)
  No776 (87.29)
  Yes113 (12.71)
 Marijuana, baseline (n = 958)
  No664 (69.31)
  Yes294 (30.69)
 Marijuana, follow-up (n = 889)
  No548 (61.64)
  Yes341 (38.36)
 Alcohol, baseline (n = 959)
  No408 (42.54)
  Yes551 (57.46)
 Other drugs, baseline (n = 957)
  No880 (91.95)
  Yes77 (8.05)
Baseline mental health, mean ± SD
 Depression symptoms (n = 964; range:1–4)1.84 ± 0.59
 Anxiety symptoms (n = 964; range: 1–3)1.92 ± 0.49
 Impulsivity (n = 963, range: 1–5)2.35 ± 0.86
  • Sample sizes for each variable may be different due to missing data.