Table 4. Summary of multifactor dimensionality reduction (MDR) analysis.
| Each overall best model | Testing accuracy | CVC | P | |
| One-locus: | rs1800975 | 0.621 | 7 | 0.070 |
| Two-locus: | One-locus plus rs25487 | 0.654 | 10 | 0.001* |
| Three-locus: | Two-locus plus rs1760944 | 0.630 | 6 | 0.057 |
| Four-locus: | Three-locus plus rs3218536 | 0.622 | 8 | 0.063 |
| Five-locus: | Four-locus plus rs1799782 | 0.596 | 6 | 0.292 |
| Six-locus: | Five-locus plus rs1130409 | 0.618 | 10 | 0.171 |
| Seven-locus: | All examined polymorphisms | 0.612 | 10 | 0.180 |
Abbreviations: CVC, cross-validation consistency. *The overall best MDR model.