Demographics and presence of headaches in the patient and control groups.
| Demographics | Patientsn=142 | Controln=153 | P-value |
|---|---|---|---|
| Gender (male) | 82 (57.7%) | 85 (55.5%) | 0.70 |
| Age (years; mean, standard deviation) | 10.7 (±3.1) | 10.6 (±2.9) | 0.35 |
| Headache | 65 (45.7%) | 3 (1.96%) | <0.00001 |