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Table 1 Studies included in the Analyses.

From: Structural brain change in Attention Deficit Hyperactivity Disorder identified by meta-analysis

Study [Reference] Patient group diagnosis Male/Female/Both Number of patients Number of controls Mean age of patients (years) Patients receiving medication
Brieber et al [15] ADHD (DSM-IV) M 15 15 13.1 10 prescribed methylphenidate
Carmona et al [16] ADHD (DSM-IV TR) B 25 25 10.8 All prescribed methylphenidate
McAlonan et al [17] ADHD (DSM-IV) M 28 31 9.9 All prescribed methylphenidate
Overmeyer et al [18] ADHD (DSM-IV) B 18 16 10.4 16 prescribed methylphenidate, 1 desipramine, 1 D-amphetamine
Van't Ent et al [19] High-low concordant twin pairs: Scored by attention problem scale of Child Behaviour Checklist (CBCL-AP) B 6 34 15.4 Unmedicated
Van't Ent et al [19] Discordant twin pairs: Scored by attention problem scale of Child Behaviour Checklist (CBCL-AP) B 10 10 15.0 Unmedicated
Wang et al [20] ADHD (DSM-IV) M 12 12 13.4 Not stated
TOTAL    114 143   
  1. All studies compared a patient group with a comparison group using voxel-based morphometry of gray matter in Magnetic Resonance Images (MRI).