组别 | 轻度 | 中度 | 重度或闭塞 | 合计 |
低CysC组(n = 66) | 30 (45.5) | 15 (22.7) | 11 (16.7) | 56 (84.8) |
高CysC组(n = 62) | 6 (9.7) | 28 (45.2) | 24 (38.7) | 58 (93.5) |
c2 | 20.243 | 7.212 | 7.819 | 1.671 |
P值 | 0.000 | 0.007 | 0.005 | 0.196 |