Research Article
Association of Polymorphisms in X-Ray Repair Cross Complementing 1 Gene and Risk of Esophageal Squamous Cell Carcinoma in a Chinese Population
Table 6
Trend analysis of the number of mutation sites.
| | Number of mutation sites | Case (%) | Control (%) | | OR (95% CI) | | OR (95% CI)1 | |
| | 0 | 39 (11.2) | 43 (10.6) | Reference | 1.00 | — | — | — | | 1 | 198 (56.9) | 220 (54.5) | 0.00 | 0.99 (0.62, 1.59) | 0.97 | 0.95 (0.57, 1.59) | 0.84 | | 2 | 107 (30.7) | 139 (34.4) | 0.41 | 0.85 (0.51, 1.40) | 0.52 | 0.78 (0.46, 1.36) | 0.40 | | 3 | 4 (1.1) | 2 (0.5) | 0.23 | 2.21 (0.38, 12.71) | 0.63 | 1.23 (0.19, 8.04) | 0.83 | | — | — | — | 0.38* | — | 0.54* | — | — |
| | Total | 348 (100) | 404 (100) | — | — | — | — | — |
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trend chi-square.
1Adjusted for age, gender, smoking, drinking, and family history of cancer.
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