| Variables | I | II | III | IV | P value |
|---|
| (n = 108) | (n = 163) | (n = 148) | (n = 39) |
|---|
| –2578C > A (%) | | | | | 0.253 |
| AA | 6 (5.56) | 6 (3.68) | 11 (7.43) | 1 (2.56) | |
| AC | 47 (43.52) | 59 (36.20) | 55 (37.16) | 21 (53.85) | |
| CC | 55 (50.93) | 98 (60.12) | 82 (55.41) | 17 (43.59) | |
| –1154G > A (%) | | | | | 0.042 |
| AA | 1 (0.93) | 6 (3.68) | 2 (1.35) | 1 (2.56) | |
| AG | 36 (33.33) | 37 (22.70) | 40 (27.03) | 18 (46.15) | |
| GG | 71 (65.74) | 120 (73.62) | 106 (71.62) | 20 (51.28) | |
| –460 T > C (%) | | | | | 0.230 |
| CC | 7 (6.48) | 6 (3.68) | 11 (7.43) | 1 (2.56) | |
| CT | 47 (43.52) | 59 (36.20) | 55 (37.16) | 21 (53.85) | |
| TT | 54 (50.00) | 98 (60.12) | 82 (55.41) | 17 (43.59) | |
| +405G > C (%) | | | | | 0.846 |
| CC | 17 (15.74) | 35 (21.47) | 29 (19.59) | 6 (15.38) | |
| CG | 58 (53.70) | 78 (47.85) | 74 (50.00) | 23 (58.97) | |
| GG | 33 (30.56) | 50 (30.67) | 45 (30.41) | 10 (25.64) | |