组别 | n | 3个月 | 6个月 |
实验组 | 30 | 30 (100.00%) | 29 (96.67%) |
对照组 | 30 | 24 (80.00%) | 20 (66.67%) |
χ2值 |
| 5.108 | 5.676 |
P值 |
| <0.05 | <0.05 |