| Genotype |  |  | HWE | |||
---|---|---|---|---|---|---|---|
CC | TC | TT | P valuea* | P valueb* | X2 | P value | |
Total |  |  |  | 0.120 | 0.926 | – | – |
 Province |  |  |  | ||||
  Zanjan | 0 | 1 | 18 | ||||
  Semnan | 1 | 11 | 115 | ||||
  Markazi | 3 | 1 | 54 | ||||
Cases | Â | Â | Â | Â | Â | 0.63 | > 0.05 |
 Province |  |  |  | 0.073 | 0.099 | – | – |
  Zanjan | 0 | 0 | 10 | ||||
  Semnan | 1 | 8 | 27 | ||||
  Markazi | 2 | 1 | 30 | ||||
Controls | Â | Â | Â | Â | Â | 0.03 | > 0.05 |
 Province |  |  |  | 0.185 | 0.361 | – | – |
  Zanjan | 0 | 1 | 8 | ||||
  Semnan | 0 | 3 | 88 | ||||
  Markazi | 1 | 0 | 24 |