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| Variables | Case n=320 | Control n=447 | P |
|---|---|---|---|
| Age(mean ± SD) | 47.1 ± 7.2 | 47.0± 6.8 | 0.584 |
| Gender (Male, %) | 154 (48.1%) | 213 (47.6%) | 0.743 |
| BMI(mean ± SD) | 23.7 ± 3.5 | 23.5 ± 2.7 | 0.772 |
| Smoking (%) | 125 (39.1%) | 104 (23.3%) | 0.041 |
| Family history (%) | 58 (18.4%) | 47 (8.3%) | < 0.001 |
| History of labor work (%) | 120 (37.5%) | 51 (11.4%) | < 0.001 |
| DM | 62 (19.4%) | 45 (10.1%) | 0.0033 |
