Table 2 Differences between cases and controls for SCOD scores and ADHD related items. Numbers in the table are frequencies and percentages or median and interquartile ranges. P-values are the result of two-tailed Fisher exact tests for categorical variables and Mann-Whitney rank-sum tests for continuous variables
Cases (251) | Controls (294) | P-value | |
|---|---|---|---|
Previous ADHD diagnosis | 10 (4%) | 4 (1%) | p = 0.061 |
Inattention score (items 1 to 9) | 4 (1–8) | 4 (1–7) | p = 0.395 |
Inattention score ≥ 14 | 15 (6%) | 22 (7%) | p = 0.501 |
Impulsivity/hyperactivity score (items 10 to 18) | 2 (1–5) | 3 (0–5) | p = 0.859 |
Impulsivity/hyperactivity score ≥ 12 | 13 (5%) | 15 (5%) | p = 1.000 |
ADHD suggestive symptoms (positivity to SCOD-G questionnaire) | 22 (9%) | 30 (10%) | p = 0.661 |