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Correlations between family medical history, blood lead, EEG, and tic recurrence (modifiable factor).
| Related Factor | Recurrence Group, n (%) | Control Group, n (%) | OR | p |
|---|---|---|---|---|
| Tic disorders in relatives | 15 (60.0%) | 12 (66.7%) | 1.253 | 0.577 |
| Mental disorders in relatives | 6 (24.0%) | 2 (11.1%) | 3.072 | 0.175 |
| Epilepsy in relatives | 4 (16.0%) | 4 (22.2%) | 0.912 | 0.899 |
| Abnormal blood lead | 7 (4.0%) | 2 (1.1%) | 3.235 | 0.150 |
| Abnormal EEG | 11 (6.3%) | 5 (2.9%) | 2.079 | 0.189 |
