Table 2.
Allele and genotype frequencies of the two BDNF SNPs.
| SNP | Samples | n | Allele (frequency) | P (χ2) | Genotype (frequency) | P (χ2) | |||
|---|---|---|---|---|---|---|---|---|---|
| A | G | AA | AG | GG | |||||
| G196A | Cases | 499 | 468 (0.469) | 530 (0.531) | 0.915 (0.011) | 115 (0.230) | 238 (0.477) | 146 (0.293) | 0.267 (2.642) |
| Controls | 488 | 460 (0.471) | 516 (0.529) | 101 (0.207) | 258 (0.529) | 129 (0.264) | |||
| T | C | TT | TC | CC | |||||
| C270T | Cases | 499 | 53 (0.048) | 945 (0.947) | 0.002 (0.018) | 0 (0.000) | 53 (0.106) | 446 (0.894) | 0.001 (9.559) |
| Controls | 488 | 25 (0.026) | 951 (0.974) | 1 (0.002) | 23 (0.047) | 464 (0.951) | |||