Table 1.

Demographic Characteristics at Baseline

	Mean±SD or % for academic performer group
	High (n=84)	Low (n=77)
Age	13.1±0.7	13.2±0.8
Annual household income ($K)	93±109	78±85
Familial alcohol use disorder density	0.00±0.03	0.01±0.06
% Male	54	61
% Hispanic/Latino	13	39
Race (%white)	75	53
Times used tobacco	0.1±0.6	0±1
Days used alcohol per month in past 3 months	0.0±0.2	0.0±0.2
Times used cannabis, lifetime	0±0	0.1±0.4
Times used other drug, lifetime	0±0	0.0±0.1
Beck Depression Inventory total	1±2	2±4
Spielberger State Anxiety T-score	48±4	47±5
Social phobia*	0.1±0.4	0.2±0.4
Panic disorder*	0.1±0.2	0±0
Generalized anxiety disorder*	0.1±0.4	0.1±0.4
Specific phobias*	0.3±0.6	0.4±0.7
Obsessive-compulsive disorder (OCD)*	0.0±0.2	0.0±0.2
Major depressive disorder (MDD)*	0.3±0.8	0.1±0.6
Manic disorder*	0.1±0.3	0.1±0.3
Schizophrenia*	0.0±0.0	0.0±0.0
Attention deficit hyperactivity disorder (ADHD) *	0.3±0.8	1±2
Oppositional defiant disorder*	0.2±0.7	1±1
Conduct disorder*	0.1±0.2	0.3±0.7
Alcohol use disorder*	0.0±0.1	0.0±0.1
Cannabis use disorder*	0.0±0.0	0.0±0.0
Substance use disorder*	0.0±0.0	0.0±0.0
ADHD functional impairment*	0±1	1±2
Separation anxiety disorder*	0.0±0.2	0.2±0.6

^*Subscale or total score from DISC Predictive Scales(Lucas et al. 2001; Leung et al. 2005, 200)