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Chi-square test for parental psychiatric disorders and their familial relation among case and control groups.
| Group | Number (%) | OR (95% CI) | P value | |
|---|---|---|---|---|
| Related parents | ADHD | 51 (24.6%) | 0.012 | |
| Control | 70 (35.4%) | |||
| Maternal psychiatric disorder | ADHD | 46 (22.2%) | <0.0001 | |
| Control | 11 (5.6%) | |||
| Paternal psychiatric disorder | ADHD | 52 (25.2%) | 8.7 (0.71–106.3) | <0.0001 |
| Control | 19 (9.6%) |
