| Group | Genotype frequency (%) | Allele frequency (%) | ||||
| LL | SL | SS | L |
| S | |
| PTSD group | 4 (8.0) | 14 (28.0) | 32 (64.0) | 22 (22.0) |
| 78 (78.0) |
| Control group | 13 (26.0) | 20 (40.0) | 17 (34.0) | 46 (46.0) |
| 54 (54.0) |
| X2 |
| 10.415 |
|
| 12.834 |
|
| P |
| 0.017 |
|
| 0.0002 |
|