Table 4.
Influence of core ADHD symptoms and co-occurring problems on prescription of ADHD medication (in the Prescribed Drug Register) in males and females with a clinical diagnosis of ADHD (in the National Patient Register)
| Characteristica | Males | Females | Interaction (sex-by-symptom) | |||
|---|---|---|---|---|---|---|
| OR (95% CI) | P | OR (95% CI) | P | OR (95% CI) | P | |
| Inattention | 1.08 (.98, 1.20) | .12 | 1.22 (1.05, 1.42) | .01 | 1.13 (0.95, 1.34) | .16 |
| Hyperactivity/impulsivity | 1.12 (1.02, 1.23) | .01 | 1.37 (1.15, 1.64) | .001 | 1.24 (1.02, 1.50) | .03 |
| Conduct problems | 1.04 (.78, 1.36) | .76 | 2.29 (1.09, 4.82) | .03 | 2.20 (1.05, 4.63) | .04 |
| Learning problems | 1.05 (.79, 1.39) | .75 | 0.83 (.56, 1.23) | .36 | 0.84 (0.53, 1.31) | .44 |
Bold data signify statistical significance of the tests
All models were adjusted for familial clustering, year of birth, and SES
OR Odds Ratio (95% confidence interval)
a Data were missing on some variables; all available data were used in analysis
For mean scores of clinically diagnosed males and females stratified by medication prescription, see Supplementary Table 2