. Author manuscript; available in PMC: 2006 Jul 6.

Published in final edited form as: Psychol Addict Behav. 2005 Dec;19(4):404–413. doi: 10.1037/0893-164X.19.4.404

Table 4.

Bivariate Correlations Between the DISC Continuous Measures of Problems Associated With Marijuana and Cocaine Abuse/Dependence and the TLFB and ADAD at Baseline and 18 Months Assessment

Assessment point and correlated assessments	Adolescent marijuana use	Adolescent cocaine use
Baseline
ADAD and DISC	.24^**	.18^†
TLFB and DISC	.17^†	.26^**
18-month assessment
ADAD and DISC	.32^**	.50^**
TLFB and DISC	.31^**	.40^**

Note. DISC = Diagnostic Interview Schedule for Children; TLFB = Timeline Followback; ADAD = Adolescent Drug Abuse Diagnosis Scale.

^†

p < .025.

^**

p < .01.