Table 1. Demographic and Clinical Characteristics of Participants by Gender.
| Variable | Boys (n = 115) | Girls (n = 72) | Pearson χ2 p-Value |
|---|---|---|---|
| Age (years/months) | 9/0 | 9/6 | p = .250 |
| Hispanic or Latino(a) | 12% | 13% | p = .820 |
| Race | |||
| Caucasian | 26% | 22% | p = .550 |
| African American | 76% | 80% | p = .516 |
| Other | 5% | 1% | p = .180 |
| Grade | |||
| Second grade | 38% | 25% | p = .061 |
| Third grade | 23% | 21% | p = .775 |
| Fourth grade | 25% | 24% | p = .804 |
| Fifth grade | 13% | 29% | p = .007 |
| Learning disability | 26% | 15% | p = .082 |
| Receives special education | 40% | 26% | p = .044 |
| ADHD-inattentive type | 33% | 66% | p <.001 |
| ADHD-combined type | 65% | 33% | p <.001 |
| Oppositional defiant disorder | 33% | 30% | p = .577 |
| Conduct disorder | 14% | 4% | p = .022 |
| Eligible for free lunch | 69.6% | 68.1% | p = .997 |
| Preferred language of primary caregiver | |||
| English | 98% | 99% | p = .575 |
| Spanish | 2% | 1% | p = .575 |
| Mother's education | |||
| Junior high school | <1% | 2% | p = .312 |
| Partial high school | 14% | 12% | p = .661 |
| High school graduate | 32% | 26% | p = .401 |
| Partial college | 33% | 27% | p = .380 |
| College graduate | 9% | 15% | p = .238 |
| Graduate training | 5% | 15% | p = .020 |