Table 1 Frequency (percentage) of birth order and positive family history
Variables | Control | ADHD | P value | |
|---|---|---|---|---|
Birth order | First | 14 (41.2) | 12 (35.3) | 0.091 |
Second | 14 (41.2) | 15 (44.2) | ||
Third and more | 6 (17.6) | 7 (20.6) | ||
Positive family history | 15 (44.2) | 26 (76.5) | 0.021 | |