Table 3.
Independent Samples t-Tests Between Sex, Race, and ADHD Status for Continuous Variables.
| Sex | Race | ADHD status | |
|---|---|---|---|
|
| |||
| Income | 0.42 | −4.04*** | 4.46*** |
| SR ADHD-IN | 1.01 | 0.33 | — |
| SR ADHD-HI | 0.90 | 0.57 | — |
| SR CDS | −2.64** | 0.56 | −4.65*** |
| PR ADHD-IN | 3.84*** | 0.68 | — |
| PR ADHD-HI | 2.77** | 1.11 | — |
| School sports (freq.) | −0.30 | −0.95 | 3.34** |
| Community sports (freq.) | −0.05 | −1.86 | 2.94** |
| School arts (freq.) | −0.20 | 0.37 | 0.97 |
| Community arts (freq.) | 0.08 | 0.07 | 2.04* |
| Clubs (freq.) | 0.87 | −0.10 | 0.35 |
| Religious group (freq.) | −1.68 | −0.96 | 1.19 |
| Volunteer work (freq.) | −0.69 | 0.26 | 2.41* |
| PA ≥ 20 min | 1.94 | −2.09* | 2.43* |
| PA ≥ 60 min | 1.57 | −0.79 | 2.69** |
| PA after school | 2.44* | 0.83 | 0.30 |
| PA in evening | 2.31* | −0.71 | 1.92 |
| PA on weekends | 2.93** | 0.24 | 0.06 |
| PA in free time | 2.51* | −1.72 | 2.46* |
Note. Income is an ordinal variable ranging from 0 to 6. For sex, 0 = male, 1 = female. For race, 0 = non-White, 1 = White. For ADHD status, 0 = non-ADHD comparison group, 1 = ADHD. SR = self-report; ADHD = attention-deficit/hyperactivity disorder; ADHD-IN = ADHD inattentive symptoms; ADHD-HI = ADHD hyperactive/impulsive symptoms; CDS = cognitive disengagement syndrome; PR = parent-report; Freq. = frequency; PA = physical activity.
*
p < .05.
**
p < .01.
***
p < .001.