. 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 3.

Correlations Between Continuous Adolescent Self-Report Measures of ADAD and TLFB by Time for Marijuana and Cocaine

	Substance reported by adolescent
Assessment point	Marijuana use	Cocaine use
Baseline	.57^**	.81^**
6-month assessment	.69^**	.85^**
18-month assessment	.76^**	.68^**

Note. Cell entries are the bivariate correlations between the Adolescent Drug Abuse Diagnosis Scale (ADAD) and Timeline Followback (TLFB) continuous measures of marijuana or cocaine use as reported by the adolescent.

^**

p < .01.