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Frequency distribution of rs17580 (n, %).
| Genotype | Observation group (N = 420) | Control group (N = 640) | χ 2 | P | ||
|---|---|---|---|---|---|---|
| N | % | N | % | |||
| TT | 250 | 59.5 | 392 | 61.25 | 0.064 | 0.800 |
| TA | 128 | 30.5 | 216 | 33.75 | 0.242 | 0.623 |
| AA | 42 | 10 | 32 | 5 | 1.802 | 0.179 |
| T | 628 | 74.8 | 1032 | 80.6 | 0.971 | 0.324 |
| A | 212 | 25.2 | 248 | 19.4 | ||
