Table 2.
ADHD presentations based on DSM-5 criteria symptom counts measured with parent-rated A-TAC, in the entire CATSS population and diagnosed children
| Presentation; n (%) | Entire populationa | Diagnosed in the NPRb | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall | Males | Females | χ2 c | P | Cohen’s d | Overall | Males | Females | χ2 c | P | Cohen’s d | |
| Inattentive | 1372 (53.7) | 837 (51.2) | 535 (58.1) | 11.27 | .002 | 0.11 | 151 (36.7) | 107 (35.6) | 44 (39.6) | 0.56 | 1.0 | − 0.02 |
| Hyperactive/impulsive | 499 (19.5) | 315 (19.3) | 184 (20.0) | 0.19 | 1.0 | 0.08 | 33 (8.0) | 25 (8.3) | 8 (7.2) | 0.13 | 1.0 | 0.05 |
| Combined | 685 (26.8) | 483 (29.5) | 202 (21.9) | 17.39 | <.001 | 0.15 | 228 (55.3) | 169 (56.1) | 59 (53.2) | 0.29 | 1.0 | 0.09 |
Bold data signify statistical significance of the tests
NPR National Patient Register
aInclusive of children with a clinical diagnosis
b236 children (163 males) did not meet symptom criteria for any of the presentations based on the A-TAC
cChi square tests are adjusted for multiple testing using Bonferroni correction