Table 4. Harm Avoidance Scores by CHRNA4 rs4522666 SNP.
| Genotype | Mean | Std. Error | Count |
| C/C: | 0.568 | 0.042 | 10 |
| C/T: | 0.404 | 0.023 | 29 |
| T/T: | 0.393 | 0.027 | 25 |
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