. Author manuscript; available in PMC: 2010 Sep 1.

Published in final edited form as: J Atten Disord. 2008 Aug 29;13(2):127–136. doi: 10.1177/1087054708323040

Table 1.

Demographic Characteristics and Severity of Disruptive Behavioral Problems

	Variable	ADHD (n = 49)	Control (n = 44)	t
	Variable	M (SD)	M (SD)	t
Age (years)^a		18.59 (1.1)	19.05 (1.4)	1.73
Socioeconomic status^b		43.39 (15.7)	41.05 (17.5)	−0.68
WAIS-III Full Scale IQ^c		94.78 (15.1)	96.36 (14.8)	0.51
ADHD checklist
	Self-report	16.40 (12.7)	3.91 (4.6)	−6.14^**
	Parent-report	23.00 (16.6)	5.30 (7.6)	−6.47^**
CBCL Externalizing scale^d		62.20 (13.9)	48.43 (11.9)	−4.90^**
YSR Externalizing scale^d		59.07 (13.1)	46.32 (9.3)	−5.08^**

Range = 16 to 21 years old.

range = 20 (low SES) to 83 (high SES).

range = 62 (extremely low) to 143 (very superior)

Scores obtained from Achenbach (2001) Child Behavior Checklist (CBCL) and Youth Self-Report (YSR).

^**

p < .01.