Table 3.

Correlations between Substance use Measures, Externalizing Traits, Family History of Substance use Problems, Sensation Seeking, Demographic Information, Prenatal Substance Exposure, and Family Functioning.

	FH+	EXT 17m-5y	EXT 6-10	EXT 11-16	SS 16	Sex	Prenatal Smoking	Prenatal Alcohol	Family Income	FF 11-15
AAO	−0.23**	0.04	−0.22**	−0.32**	−0.33**	−0.03	−0.19**	−0.19**	0.05	0.11
Alc Use 16	0.18**	−0.06	0.11	0.23**	0.35**	0.05	0.11	0.03	−0.05	0.03
Can Use 16	0.17*	0.01	0.08	0.32**	0.28**	−0.07	0.11	−0.04	−0.09	0.02
FH+		0.07	−0.01	0.20**	0.05	−0.01	0.23**	−0.01	−0.24**	−0.07
EXT 17m-5y			0.34**	0.22**	−0.01	−0.20**	0.16*	0.07	−0.19**	0.29**
EXT 6-10				0.33**	0.1	−0.27**	0.16*	−0.02	−0.17**	0.17**
EXT 11-16					0.21**	−0.11	0.17**	−0.07	−0.22**	0.14*
SS 16 years						−0.07	−0.00	0.03	−0.03	−0.12

Note. AAO = age of alcohol use onset; Alc Use 16 = alcohol use frequency at age 16; Can Use 16: cannabis use frequency at age 16; EXT = externalizing traits; FF = family functioning; FH+ = family history of substance use problems; SS = sensation seeking.

* Significant at P < 0.05. **Significant at P < 0.01.