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. Author manuscript; available in PMC: 2016 Sep 30.
Published in final edited form as: Psychiatry Res. 2015 Aug 3;233(3):488–495. doi: 10.1016/j.pscychresns.2015.08.001

Table 1.

Participant demographic information for ADHD and control groups. Children with ADHD had significantly lower FSIQ and GAI scores on the WISC-IV.

Controls (n=18) ADHD (n=16) p-value
Boys: Girls (n) 11:7 11:5 .729
Age (years), mean (SD) 10.5 (1.4) 10.4 (1.4) .770
ADHD subtype (n) n/a 13:3 n/a
Combined:inattentive
ODD (n) n/a 7 n/a
SES, mean (SD) 57.4 (9.9) 46.9 (11.6) .009
WISC-IV FSIQ, mean (SD) 112.6 (9.1) 97.3 (12.0) <.001
WISC-IV GAI, mean (SD) 114.2 (9.3) 103.0 (15.3) .016
Handedness, mean (SD) .85 (.15) .89 (.1) .408

Note: ODD = oppositional defiant disorder; SES = Hollingshead socioeconomic status; WISC-IV = Wechsler Intelligence Scale for Children, Fourth Edition; FSIQ = full scale IQ; GAI = General Ability Index. Handedness was assessed using the Edinburgh Handedness Inventory (Oldfield, 1971).