TABLE 4

Comparison of Self-report to Biological Evidence of Illicit Drug Use for Teens and Parents

DrugnSource
Positive Self-report, n (%)Positive Hair Specimen, n (%)
Teens
    Opiates1810 (0.0)12 (6.6)
    Cocaine2112 (0.9)69 (33.7)
    Marijuana20243 (20.0)9 (4.5)
Parents
    Opiates2137 (3.3)15 (7.0)
    Cocaine24415 (6.1)69 (28.3)
    Marijuana23379 (31.6)16 (6.9)
  • The self-report denominator is limited to only the specimen used in biological analyses (n = 215 for teens and n = 248 for caregivers).