| 组别 | 生存率 | |||
| 随访6个月 | 随访12个月 | 随访18个月 | ||
| 对照组(n = 65) | 40 (61.54) | 34 (52.31) | 28 (43.08) | |
| 观察组(n = 65) | 59 (90.77) | 53 (81.54) | 51 (78.46) | |
| χ2值 | 15.292 | 12.545 | 17.069 | |
| P值 | 0.000 | 0.000 | 0.000 | |