Table 1.
Weighted1 prevalence of demographic factors and unadjusted odds ratio of ADHD
| N=967 | Weighted Prevalence % (95% CI) | Association with ADHD | ||
|---|---|---|---|---|
| Unadjusted odds ratio (95% CI) | P | |||
| ADHD Status | ||||
| ADHD | 392 | 14.7 (13.7–15.8) | - | |
| Potential cases who did not become cases | 182 | 7.0 (6.1–7.9) | - | |
| Controls | 393 | 78.3 (77.4–79.2) | - | |
| Annual Family Income | ||||
| Low (<$20,000) | 219 | 15.7 (13.1–18.6) | 4.0 (2.6–6.0) | <.001 |
| Middle ($20,000–$49,999) | 442 | 46.5 (42.3–50.7) | 1.6 (1.2–2.3) | <.001 |
| High (>= $50,000) | 292 | 37.8 (33.8–42.0) | 1.0 | |
| Missing | 14 | |||
| Respondent Education | ||||
| Less than high school | 111 | 8.3 (6.4–10.7) | 6.0 (3.3–10.7) | <.001 |
| High school | 688 | 68.7 (64.6–72.4) | 3.3 (2.2–5.0) | <.001 |
| More than high school | 161 | 23.0 (19.6–26.9) | 1.0 | |
| Missing | 7 | |||
| Parental History of ADHD Diagnosis | ||||
| With Parental History of ADHD diagnosis | 237 | 15.7 (13.2–18.6) | 4.3 (3.0–6.1) | <.001 |
| Without Parental History of ADHD diagnosis | 730 | 84.3 (81.4–86.8) | 1.0 | |
| Parental History of ADHD Symptoms | ||||
| With Parental History of ADHD Symptoms | 444 | 34.1 (30.5–38.0) | 4.4 (3.2–5.9) | <.001 |
| Without Parental History of ADHD Symptoms | 523 | 65.9 (62.0–69.5) | 1.0 | |
| Gender | ||||
| Male | 614 | 51.4 (47.3 – 55.5) | 4.6 (3.3–6.4) | <.001 |
| Female | 353 | 48.6 (44.5–52.7) | 1.00 | |
| Race/ethnicity | ||||
| Nonwhite | 216 | 19.2 (16.2–22.5) | 1.1 (0.8–1.6) | 0.51 |
| White | 751 | 80.8 (77.5–83.8) | 1.0 | |
| Age group | ||||
| 11–14 | 213 | 21.7 (18.4–25.3) | 1.1 (0.8–1.6) | 0.61 |
| 9–10 | 387 | 38.6 (34.6–42.7) | 1.3 (1.0–1.8) | .08 |
| 6–8 | 367 | 39.8 (35.7–43.9) | 1.0 | |
1
The weighted prevalence is an estimate of the prevalence of the characteristic in the population of children eligible for parental interviews (N=5661) based on our sample of children with birth mother interviews (N=967).