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D4 Receptor 48 bp repeat genotype group classification
| D4 receptor 48 bp repeat genotype | N | % | Genotype group |
|---|---|---|---|
| 2/2 | 8 | 3.3 | 1 |
| 2/3 | 2 | 0.8 | 1 |
| 2/4 | 20 | 8.4 | 1 |
| 3/4 | 2 | 0.8 | 1 |
| 3/6 | 3 | 1.0 | 1 |
| 4/4 | 140 | 57.8 | 1 |
| 4/5 | 5 | 2.0 | 1 |
| 4/6 | 6 | 2.6 | 1 |
| 4/7 | 40 | 16.7 | 2 |
| 5/7 | 6 | 2.4 | 2 |
| 7/7 | 10 | 4.2 | 2 |
Group 1 7-absent group: <7-fold repeat of the 48 bp repeat of D4 receptor, Group 2 7-present group: ≥ 7-fold repeat of the 48 bp repeat of D4 receptor
