Table 1.
Age, gender and education data for the DRD4 7R genotype, SD: standard deviation.
| N | Female (percent) | Age (years) | Education (years) | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| no7 | 128 | 65.63 | 24.54 | 2.2 | 13.83 | 1.27 |
| 7 | 57 | 49.12 | 24.67 | 2.02 | 13.82 | 1.16 |
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