Table 3.
Baseline Characteristics of the Participants’ Target Children, Summarized for the Total Sample as Well as for Parents Scoring in the Low, Middle, and High ADHD Strata Separately.
| Age | All (n = 549) | Low ADHD stratum (n = 299) | Middle ADHD stratum (n = 144) | High ADHD stratum (n = 106) | Strata comparisons | ||||
|---|---|---|---|---|---|---|---|---|---|
| M (SD) | Min–max | M (SD) | Min–max | M (SD) | Min–max | M (SD) | Min–max | p-Value a | |
| 10.45 (2.85) | 3-17 | 10.62 (2.79) | 3-17 | 10.54 (2.92) | 4-17 | 9.88 (2.88) | 5-17 | .07 | |
| n | % | n | % | n | % | n | % | ||
| Female gender | 164 | 29.87 | 91 | 30.43 | 41 | 28.47 | 32 | 30.19 | .76 |
| ADHD (any form) b | 549 | 100.00 | 299 | 100.00 | 144 | 100.00 | 106 | 100.00 | .69 |
| ADHD combined | 328 | 59.74 | 176 | 58.86 | 90 | 62.50 | 62 | 58.49 | |
| ADHD inattentive | 108 | 19.67 | 59 | 19.73 | 28 | 19.44 | 21 | 19.81 | |
| ADHD hyperactive-impulsive | 38 | 6.92 | 21 | 7.02 | 7 | 4.86 | 10 | 9.43 | |
| ADHD other | 57 | 10.38 | 34 | 11.37 | 16 | 11.11 | 7 | 6.60 | |
| ADHD medication | 258 | 46.99 | 146 | 48.83 | 69 | 47.92 | 43 | 40.57 | .33 |
| ≥One parallel contact c | 245 | 44.63 | 138 | 46.15 | 63 | 43.75 | 44 | 41.51 | .69 |
Note. Percentages are calculated as proportion of total sample. Values are missing for 0 to 10 individuals (0%–1.8%).
a
From one-way ANOVAs (continuous variables) or Chi-square tests (categorical variables).
b
Twelve children (2.2%) also had an autism spectrum disorder, in addition to their ADHD.
c
At least one additional contact, for example, within the child and adolescent (primary or secondary) psychiatric care.