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| Polymorphism | Stage 4 cases (n=497) | Stage 5 cases (n=227) | P |
| ACE ID polymorphism | 0.747 | ||
| II | 148 (29.8) | 74 (32.6) | |
| ID | 237 (47.7) | 104 (45.8) | |
| DD | 112 (22.5) | 49 (21.6) | |
| TNF -308G/A polymorphism | 0.432 | ||
| GG | 383 (77.1) | 173 (76.2) | |
| GA | 106 (21.3) | 47 (20.7) | |
| AA | 8 (1.6) | 7 (3.1) |
n (%)
