2.
CAL组及NCAL组rs4638289位点基因型及等位基因分布比较 [例（%）]
| 组别 | 例数 | 基因型 | 等位基因 | ||||
| AA | AT | TT | A | T | |||
| NCAL组 | 82 | 4(4.9) | 46(56.1) | 32(39.0) | 54(32.9) | 110(67.1) | |
| CAL组 | 23 | 4(12.5) | 6(26.1) | 13(56.5) | 14(30.4) | 32(69.6) | |
| χ2值 | 8.241 | 0.102 | |||||
| P值 | 0.016 | 0.750 | |||||
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