Table 1.
Demographic and clinical characteristics of participants (N = 114) in treatment and control group.
| Treatment | Control) | |
|---|---|---|
| group (n = 58) | group (n = 56) | |
| Demographic Characteristics | ||
| Age (years) | 8.48 (1.85) | 8.25 (1.97) |
| Gender (% male)∗ | 91% (n = 53) | 77% (n = 43) |
| IQ | 104.02 (11.34) | 100.21 (10.41) |
| SESa | 3.37 (0.67) | 3.24 (0.95) |
| Race (% Caucasian) | 86% (n = 50) | 82% (n = 46) |
| ADHD diagnosis | 10% (n = 6) | 9% (n = 5) |
| Other psychiatric diagnosis | 2% (n = 1; CD) | 2% (n = 1; PDD-NOS) |
| Parent DBDRS | ||
| Inattention | 11.71 (5.23) | 10.77 (5.57) |
| Hyperactivity/Impulsivity | 11.79 (5.42) | 10.47 (5.49) |
| ODD | 5.88 (3.84) | 4.93 (4.00) |
| CD | 0.86 (1.31) | 0.90 (1.40) |
| Teacher DBDRS | ||
| Inattention | 14.63 (5.26) | 14.90 (5.83) |
| Hyperactivity/Impulsivity | 15.67 (5.35) | 15.03 (6.23) |
| ODD | 6.77 (4.75) | 5.95 (4.75) |
| CD | 1.43 (1.65) | 1.57 (1.90) |
| TTI | ||
| Inattention | 12.50 (6.12) | 12.45 (5.34) |
| Hyperactivity/Impulsivity∗ | 15.62 (6.03) | 12.88 (5.78) |
| Combined | 28.12 (8.97) | 25.33 (8.34) |
| Outcome measures | ||
| Actigraphy (AC/min) | 734.24 (223.54) | 730.79 (188.16) |
| Classroom-observed ADHD symptoms | 25.33 (19.26) | 21.59 (18.64) |
| Peer acceptance | 3.17 (0.68) | 3.24 (0.71) |
M and SDs are depicted unless stated otherwise. AC/min = Activity Counts per minute; ADHD = Attention-Deficit Hyperactivity Disorder; CD = Conduct Disorder; DBDRS = Disruptive Behavior Disorder Rating Scale; ODD = Oppositional Defiant Disorder; PDD-NOS = Pervasive Developmental Disorder-Not Otherwise Specified; SES = Socioeconomic Status; TTI = Teacher Telephone Interview. aSES was measured by parental educational level (average of both parents) through an adapted version of the Dutch classification system (1 = primary education, 2 = secondary vocational education, 3 = secondary general education, 4 = undergraduate school, 5 = graduate school; Verhage, 1983). ∗ < 0.05. Adapted with permission of SAGE publishing from Veenman et al. (2016).